repo stringclasses 1k
values | file_url stringlengths 96 373 | file_path stringlengths 11 294 | content stringlengths 0 32.8k | language stringclasses 1
value | license stringclasses 6
values | commit_sha stringclasses 1k
values | retrieved_at stringdate 2026-01-04 14:45:56 2026-01-04 18:30:23 | truncated bool 2
classes |
|---|---|---|---|---|---|---|---|---|
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-concurrency-basic-2/src/main/java/com/baeldung/concurrent/stopexecution/StopExecution.java | core-java-modules/core-java-concurrency-basic-2/src/main/java/com/baeldung/concurrent/stopexecution/StopExecution.java | package com.baeldung.concurrent.stopexecution;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.util.ArrayList;
import java.util.List;
import java.util.Timer;
import java.util.TimerTask... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-concurrency-basic-2/src/main/java/com/baeldung/concurrent/stopexecution/StoppingExecution.java | core-java-modules/core-java-concurrency-basic-2/src/main/java/com/baeldung/concurrent/stopexecution/StoppingExecution.java | package com.baeldung.concurrent.stopexecution;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.List;
import java.util.Timer;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import java.util.concurrent.ScheduledExecutorSe... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-concurrency-basic-2/src/main/java/com/baeldung/concurrent/stopexecution/LongRunningTask.java | core-java-modules/core-java-concurrency-basic-2/src/main/java/com/baeldung/concurrent/stopexecution/LongRunningTask.java | package com.baeldung.concurrent.stopexecution;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class LongRunningTask implements Runnable {
private static final Logger LOG = LoggerFactory.getLogger(LongRunningTask.class);
@Override
public void run() {
LOG.info("running");
... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-concurrency-basic-2/src/main/java/com/baeldung/concurrent/futurevspromise/FutureVsPromise.java | core-java-modules/core-java-concurrency-basic-2/src/main/java/com/baeldung/concurrent/futurevspromise/FutureVsPromise.java | package com.baeldung.concurrent.futurevspromise;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import org.slf4j.Logger;
import org.slf4j.LoggerFactor... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-concurrency-basic-2/src/main/java/com/baeldung/concurrent/localvariables/LocalAndLambda.java | core-java-modules/core-java-concurrency-basic-2/src/main/java/com/baeldung/concurrent/localvariables/LocalAndLambda.java | package com.baeldung.concurrent.localvariables;
public class LocalAndLambda {
public static void main(String... args) {
String text = "";
// Un-commenting the next line will break compilation, because text is no longer effectively final
// text = "675";
new Thread(() -> System.out.p... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-concurrency-basic-2/src/main/java/com/baeldung/concurrent/localvariables/LocalVariables.java | core-java-modules/core-java-concurrency-basic-2/src/main/java/com/baeldung/concurrent/localvariables/LocalVariables.java | package com.baeldung.concurrent.localvariables;
import java.security.SecureRandom;
public class LocalVariables implements Runnable {
private int field;
public static void main(String... args) {
LocalVariables target = new LocalVariables();
new Thread(target).start();
new Thread(target... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-numbers-conversions/src/test/java/com/baeldung/negate/NegateIntUnitTest.java | core-java-modules/core-java-numbers-conversions/src/test/java/com/baeldung/negate/NegateIntUnitTest.java | package com.baeldung.negate;
import org.junit.jupiter.api.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import static org.junit.jupiter.api.Assertions.*;
public class NegateIntUnitTest {
private static final Logger LOG = LoggerFactory.getLogger(NegateIntUnitTest.class);
@Test
void when... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-numbers-conversions/src/test/java/com/baeldung/inttoshort/ConvertIntToShortUnitTest.java | core-java-modules/core-java-numbers-conversions/src/test/java/com/baeldung/inttoshort/ConvertIntToShortUnitTest.java | package com.baeldung.inttoshort;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertThrows;
import org.junit.jupiter.api.Test;
class ConvertIntToShortUnitTest {
@Test
void whenUsingCasting_thenCorrect() {
short expected = 42;
int... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-numbers-conversions/src/test/java/com/baeldung/inttolong/IntToLongUnitTest.java | core-java-modules/core-java-numbers-conversions/src/test/java/com/baeldung/inttolong/IntToLongUnitTest.java | package com.baeldung.inttolong;
import static org.junit.jupiter.api.Assertions.assertEquals;
import java.util.Optional;
import org.junit.jupiter.api.Test;
class IntToLongUnitTest {
@Test
void whenUsingTheAutoboxing_thenGetTheExpectedLong() {
int intTen = 10;
Long longTen = (long) intTen;
... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-numbers-conversions/src/test/java/com/baeldung/stringtoint/StringToIntConverterUnitTest.java | core-java-modules/core-java-numbers-conversions/src/test/java/com/baeldung/stringtoint/StringToIntConverterUnitTest.java | package com.baeldung.stringtoint;
import java.util.Arrays;
import java.util.List;
import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.Test;
class StringToIntConverterUnitTest {
private StringToIntConverter stringToIntConverter = new StringToIntConverter();
@Test
void whenConverting... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-numbers-conversions/src/test/java/com/baeldung/floatdoubleconversions/FloatDoubleConversionsUnitTest.java | core-java-modules/core-java-numbers-conversions/src/test/java/com/baeldung/floatdoubleconversions/FloatDoubleConversionsUnitTest.java | package com.baeldung.floatdoubleconversions;
import org.junit.Assert;
import org.junit.Test;
public class FloatDoubleConversionsUnitTest {
@Test
public void whenDoubleType_thenFloatTypeSuccess(){
double interestRatesYearly = 13.333333333333333;
float interest = (float) interestRatesYearly;
... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-numbers-conversions/src/main/java/com/baeldung/stringtoint/StringToIntConverter.java | core-java-modules/core-java-numbers-conversions/src/main/java/com/baeldung/stringtoint/StringToIntConverter.java | package com.baeldung.stringtoint;
import java.util.Optional;
import org.apache.commons.lang3.math.NumberUtils;
public class StringToIntConverter {
Optional<Integer> convertStringToIntUsingIntegerParseInt(String input){
try {
return Optional.of(Integer.parseInt(input));
} catch (NumberF... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-numbers-conversions/src/main/java/com/baeldung/floatdoubleconversions/FloatAndDoubleConversions.java | core-java-modules/core-java-numbers-conversions/src/main/java/com/baeldung/floatdoubleconversions/FloatAndDoubleConversions.java | package com.baeldung.floatdoubleconversions;
public class FloatAndDoubleConversions {
public static void main(String args[]){
float vatRate = 14.432511f;
System.out.println("vatRate:"+vatRate);
Float localTaxRate = 20.12434f;
System.out.println("localTaxRate:"+localTaxRate);
... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-operators/src/test/java/com/baeldung/booleanoperators/XorUnitTest.java | core-java-modules/core-java-lang-operators/src/test/java/com/baeldung/booleanoperators/XorUnitTest.java | package com.baeldung.booleanoperators;
import org.junit.jupiter.api.Test;
import static org.assertj.core.api.Assertions.assertThat;
class XorUnitTest {
@Test
void givenDieselManualCar_whenXorOldSchool_thenFalse() {
Car car = Car.dieselAndManualCar();
boolean dieselXorManual = (car.isDiesel()... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-operators/src/test/java/com/baeldung/bitwiseoperator/test/BitwiseOperatorUnitTest.java | core-java-modules/core-java-lang-operators/src/test/java/com/baeldung/bitwiseoperator/test/BitwiseOperatorUnitTest.java | package com.baeldung.bitwiseoperator.test;
import static org.junit.Assert.assertEquals;
import org.junit.jupiter.api.Test;
public class BitwiseOperatorUnitTest {
@Test
public void givenTwoIntegers_whenAndOperator_thenNewDecimalNumber() {
int value1 = 6;
int value2 = 5;
int result = va... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-operators/src/test/java/com/baeldung/keyword/InstanceOfUnitTest.java | core-java-modules/core-java-lang-operators/src/test/java/com/baeldung/keyword/InstanceOfUnitTest.java | package com.baeldung.keyword;
import org.junit.jupiter.api.Test;
import java.util.List;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import static org.junit.jupiter.api.Assertions.*;
public class InstanceOfUnitTest {
@Test
void givenWhenInstanceIsCorrect_thenReturnTrue() {
Ri... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-operators/src/test/java/com/baeldung/modulo/ModuloUnitTest.java | core-java-modules/core-java-lang-operators/src/test/java/com/baeldung/modulo/ModuloUnitTest.java | package com.baeldung.modulo;
import static org.junit.Assert.assertEquals;
import org.junit.Test;
import static org.assertj.core.api.Java6Assertions.*;
public class ModuloUnitTest {
@Test
public void whenIntegerDivision_thenLosesRemainder() {
assertThat(11 / 4).isEqualTo(2);
}
@Test
publ... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-operators/src/test/java/com/baeldung/ternaryoperator/TernaryOperatorUnitTest.java | core-java-modules/core-java-lang-operators/src/test/java/com/baeldung/ternaryoperator/TernaryOperatorUnitTest.java | package com.baeldung.ternaryoperator;
import static org.assertj.core.api.Assertions.assertThat;
import org.junit.Test;
public class TernaryOperatorUnitTest {
@Test
public void whenUsingTernaryOperator_thenConditionIsEvaluatedAndValueReturned() {
int number = 10;
String msg = number > 10 ? "N... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-operators/src/main/java/com/baeldung/booleanoperators/Car.java | core-java-modules/core-java-lang-operators/src/main/java/com/baeldung/booleanoperators/Car.java | package com.baeldung.booleanoperators;
public class Car {
private boolean diesel;
private boolean manual;
public Car(boolean diesel, boolean manual) {
this.diesel = diesel;
this.manual = manual;
}
public boolean isDiesel() {
return diesel;
}
public boolean isManu... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-operators/src/main/java/com/baeldung/keyword/Triangle.java | core-java-modules/core-java-lang-operators/src/main/java/com/baeldung/keyword/Triangle.java | package com.baeldung.keyword;
public class Triangle implements Shape {
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-operators/src/main/java/com/baeldung/keyword/Circle.java | core-java-modules/core-java-lang-operators/src/main/java/com/baeldung/keyword/Circle.java | package com.baeldung.keyword;
public class Circle extends Round implements Shape {
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-operators/src/main/java/com/baeldung/keyword/Round.java | core-java-modules/core-java-lang-operators/src/main/java/com/baeldung/keyword/Round.java | package com.baeldung.keyword;
public class Round {
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-operators/src/main/java/com/baeldung/keyword/Shape.java | core-java-modules/core-java-lang-operators/src/main/java/com/baeldung/keyword/Shape.java | package com.baeldung.keyword;
public interface Shape {
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-operators/src/main/java/com/baeldung/keyword/Ring.java | core-java-modules/core-java-lang-operators/src/main/java/com/baeldung/keyword/Ring.java | package com.baeldung.keyword;
public class Ring extends Round {
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-operators/src/main/java/com/baeldung/ternaryoperator/TernaryOperator.java | core-java-modules/core-java-lang-operators/src/main/java/com/baeldung/ternaryoperator/TernaryOperator.java | package com.baeldung.ternaryoperator;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class TernaryOperator {
private final static Logger LOGGER = LoggerFactory.getLogger(TernaryOperator.class);
public static String checkNumber(int num) {
return num > 10 ? "Number is greater than 10"... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-oop-constructors/src/test/java/com/baeldung/copyconstructor/EmployeeUnitTest.java | core-java-modules/core-java-lang-oop-constructors/src/test/java/com/baeldung/copyconstructor/EmployeeUnitTest.java | package com.baeldung.copyconstructor;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotEquals;
import java.util.Date;
import org.junit.Test;
public class EmployeeUnitTest {
@Test
public void givenCopyConstructor_whenDeepCopy_thenDistinct() {
Date d1 = new Date(123... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-oop-constructors/src/test/java/com/baeldung/copyconstructor/ManagerUnitTest.java | core-java-modules/core-java-lang-oop-constructors/src/test/java/com/baeldung/copyconstructor/ManagerUnitTest.java | package com.baeldung.copyconstructor;
import static org.junit.Assert.assertArrayEquals;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import org.junit.Test;
public class ManagerUnitTest {
@Test
... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-oop-constructors/src/main/java/com/baeldung/copyconstructor/Manager.java | core-java-modules/core-java-lang-oop-constructors/src/main/java/com/baeldung/copyconstructor/Manager.java | package com.baeldung.copyconstructor;
import java.util.Date;
import java.util.List;
import java.util.stream.Collectors;
public class Manager extends Employee {
private List<Employee> directReports;
public Manager(int id, String name, Date startDate, List<Employee> directReports) {
super(id, name, st... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-oop-constructors/src/main/java/com/baeldung/copyconstructor/Employee.java | core-java-modules/core-java-lang-oop-constructors/src/main/java/com/baeldung/copyconstructor/Employee.java | package com.baeldung.copyconstructor;
import java.util.Date;
public class Employee {
protected int id;
protected String name;
protected Date startDate;
public Employee(int id, String name, Date startDate) {
this.id = id;
this.name = name;
this.startDate = startDate;
}
... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-oop-constructors/src/main/java/com/baeldung/privateconstructors/ValueTypeClass.java | core-java-modules/core-java-lang-oop-constructors/src/main/java/com/baeldung/privateconstructors/ValueTypeClass.java | package com.baeldung.privateconstructors;
public class ValueTypeClass {
private final String value;
private final String type;
public ValueTypeClass(int x) {
this(Integer.toString(x), "int");
}
public ValueTypeClass(boolean x) {
this(Boolean.toString(x), "boolean");
}
pr... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-oop-constructors/src/main/java/com/baeldung/privateconstructors/Employee.java | core-java-modules/core-java-lang-oop-constructors/src/main/java/com/baeldung/privateconstructors/Employee.java | package com.baeldung.privateconstructors;
public class Employee {
private final String name;
private final int age;
private final String department;
private Employee(String name, int age, String department) {
this.name = name;
this.age = age;
this.department = department;
... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-oop-constructors/src/main/java/com/baeldung/privateconstructors/StringUtils.java | core-java-modules/core-java-lang-oop-constructors/src/main/java/com/baeldung/privateconstructors/StringUtils.java | package com.baeldung.privateconstructors;
public class StringUtils {
private StringUtils() {
// this class cannot be instantiated
}
public static String toUpperCase(String s) {
return s.toUpperCase();
}
public static String toLowerCase(String s) {
return s.toLowerCase();
... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-oop-constructors/src/main/java/com/baeldung/privateconstructors/PrivateConstructorClass.java | core-java-modules/core-java-lang-oop-constructors/src/main/java/com/baeldung/privateconstructors/PrivateConstructorClass.java | package com.baeldung.privateconstructors;
public class PrivateConstructorClass {
private PrivateConstructorClass() {
// in the private constructor
}
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-oop-constructors/src/main/java/com/baeldung/privateconstructors/SingletonClass.java | core-java-modules/core-java-lang-oop-constructors/src/main/java/com/baeldung/privateconstructors/SingletonClass.java | package com.baeldung.privateconstructors;
public final class SingletonClass {
private static SingletonClass INSTANCE;
private String info = "Initial info class";
private SingletonClass() {
}
public static SingletonClass getInstance() {
if (INSTANCE == null) {
INSTANCE = new S... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-oop-constructors/src/main/java/com/baeldung/initializerblock/staticblock/StaticBlockExample.java | core-java-modules/core-java-lang-oop-constructors/src/main/java/com/baeldung/initializerblock/staticblock/StaticBlockExample.java | package com.baeldung.initializerblock.staticblock;
public class StaticBlockExample {
static {
System.out.println("static block 1");
}
static {
System.out.println("static block 2");
}
public static void main(String[] args) {
System.out.println("Main Method");
}
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-oop-constructors/src/main/java/com/baeldung/initializerblock/instanceblock/InstanceBlockExample.java | core-java-modules/core-java-lang-oop-constructors/src/main/java/com/baeldung/initializerblock/instanceblock/InstanceBlockExample.java | package com.baeldung.initializerblock.instanceblock;
public class InstanceBlockExample {
{
System.out.println("Instance initializer block 1");
}
{
System.out.println("Instance initializer block 2");
}
public InstanceBlockExample() {
System.out.println("Class const... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-string-operations-8/src/test/java/com/baeldung/emailandphonemasking/EmailAndPhoneMaskingUnitTest.java | core-java-modules/core-java-string-operations-8/src/test/java/com/baeldung/emailandphonemasking/EmailAndPhoneMaskingUnitTest.java | package com.baeldung.emailandphonemasking;
import org.junit.jupiter.api.Test;
import java.util.stream.Collectors;
import java.util.stream.IntStream;
import static org.junit.jupiter.api.Assertions.assertEquals;
public class EmailAndPhoneMaskingUnitTest {
String phoneNumber = "+12344567890";
String expected... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-string-operations-8/src/test/java/com/baeldung/removetrailingspaces/RemoveTrailingSpaceOrWhitespaceUnitTest.java | core-java-modules/core-java-string-operations-8/src/test/java/com/baeldung/removetrailingspaces/RemoveTrailingSpaceOrWhitespaceUnitTest.java | package com.baeldung.removetrailingspaces;
import static org.junit.jupiter.api.Assertions.assertEquals;
import org.apache.commons.lang3.StringUtils;
import org.junit.jupiter.api.Test;
public class RemoveTrailingSpaceOrWhitespaceUnitTest {
private final static String INPUT = " a b c d e \t ";
@Test
vo... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-string-operations-8/src/test/java/com/baeldung/findlargestnuminstring/FindLargestNumInStringUnitTest.java | core-java-modules/core-java-string-operations-8/src/test/java/com/baeldung/findlargestnuminstring/FindLargestNumInStringUnitTest.java | package com.baeldung.findlargestnuminstring;
import org.junit.jupiter.api.Test;
import java.util.Arrays;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import static org.junit.jupiter.api.Assertions.assertEquals;
public class FindLargestNumInStringUnitTest {
String inputString = "The numbers ar... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-string-operations-8/src/test/java/com/baeldung/checkifstringisbased64/CheckIfStringIsBased64UnitTest.java | core-java-modules/core-java-string-operations-8/src/test/java/com/baeldung/checkifstringisbased64/CheckIfStringIsBased64UnitTest.java | package com.baeldung.checkifstringisbased64;
import org.junit.jupiter.api.Test;
import java.util.Base64;
import java.util.regex.Pattern;
import static org.junit.jupiter.api.Assertions.*;
public class CheckIfStringIsBased64UnitTest {
@Test
public void givenBase64EncodedString_whenDecoding_thenNoException() ... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-string-operations-8/src/test/java/com/baeldung/countupperandlowercasechars/CountUpperAndLowercaseCharsUnitTest.java | core-java-modules/core-java-string-operations-8/src/test/java/com/baeldung/countupperandlowercasechars/CountUpperAndLowercaseCharsUnitTest.java | package com.baeldung.countupperandlowercasechars;
import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertTrue;
public class CountUpperAndLowercaseCharsUnitTest {
private static final String MY_STRING = "Hi, Welcome to B... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-string-operations-8/src/test/java/com/baeldung/finduniqueemails/FindUniqueEmailsUnitTest.java | core-java-modules/core-java-string-operations-8/src/test/java/com/baeldung/finduniqueemails/FindUniqueEmailsUnitTest.java | package com.baeldung.finduniqueemails;
import org.junit.jupiter.api.Test;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;
import java.util.stream.Collectors;
import static org.junit.jupiter.api.Assertions.assertEquals;
public class FindUniqueEmailsUnitTest {
String[] emailList = {"user@... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-string-operations-8/src/test/java/com/baeldung/UTF8ToISO/UTF8ToISOUnitTest.java | core-java-modules/core-java-string-operations-8/src/test/java/com/baeldung/UTF8ToISO/UTF8ToISOUnitTest.java | package com.baeldung.UTF8ToISO;
import org.junit.jupiter.api.Test;
import java.nio.ByteBuffer;
import java.nio.CharBuffer;
import java.nio.charset.StandardCharsets;
import static org.junit.Assert.assertArrayEquals;
public class UTF8ToISOUnitTest {
String string = "âabcd";
byte[] expectedBytes = new byte[]{(... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-string-operations-8/src/test/java/com/baeldung/lastncharacters/LastNCharactersUnitTest.java | core-java-modules/core-java-string-operations-8/src/test/java/com/baeldung/lastncharacters/LastNCharactersUnitTest.java | package com.baeldung.lastncharacters;
import static org.assertj.core.api.Assertions.assertThat;
import java.util.Arrays;
import java.util.stream.Collectors;
import org.apache.commons.lang3.ArrayUtils;
import org.apache.commons.lang3.StringUtils;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.T... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-string-operations-8/src/test/java/com/baeldung/firstnchars/FirstNCharactersUnitTest.java | core-java-modules/core-java-string-operations-8/src/test/java/com/baeldung/firstnchars/FirstNCharactersUnitTest.java | package com.baeldung.firstnchars;
import static org.junit.jupiter.api.Assertions.assertEquals;
import org.apache.commons.lang3.StringUtils;
import org.junit.jupiter.api.Test;
import com.google.common.base.Ascii;
class FirstNCharactersUnitTest {
@Test
void givenString_whenUsingSubstringMethod_thenGetFirstCh... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-concurrency-advanced-5/src/test/java/executerservicecustomthreadname/ExecuterServiceCustomThreadNameUnitTest.java | core-java-modules/core-java-concurrency-advanced-5/src/test/java/executerservicecustomthreadname/ExecuterServiceCustomThreadNameUnitTest.java | package executerservicecustomthreadname;
import static org.junit.Assert.assertTrue;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.ThreadFactory;
import org.apache.commons.lang3.concurrent.BasicThreadFactory;
import org.junit.jupiter.api.Test;
import ... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-concurrency-advanced-5/src/test/java/com/baeldung/wait_synchronization/ConditionCheckerUnitTest.java | core-java-modules/core-java-concurrency-advanced-5/src/test/java/com/baeldung/wait_synchronization/ConditionCheckerUnitTest.java | package com.baeldung.wait_synchronization;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import org.assertj.core.api.Assertions;
import org.junit.jupiter.api.Test;
class ConditionCheckerUnitTest {
@Test
public void givenBothMethodsAreSynchronized_whenBothMethodsAreCalle... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-concurrency-advanced-5/src/test/java/com/baeldung/joinvsget/CompletableFutureUnitTest.java | core-java-modules/core-java-concurrency-advanced-5/src/test/java/com/baeldung/joinvsget/CompletableFutureUnitTest.java | package com.baeldung.joinvsget;
import org.junit.jupiter.api.Test;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.CompletionException;
import java.util.concurrent.ExecutionException;
import static org.junit.jupiter.api.Assertions.*;
public class CompletableFutureUnitTest {
@Test
p... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-concurrency-advanced-5/src/test/java/com/baeldung/executorservicetest/ExecutorServiceUnitTest.java | core-java-modules/core-java-concurrency-advanced-5/src/test/java/com/baeldung/executorservicetest/ExecutorServiceUnitTest.java | package com.baeldung.executorservicetest;
import static org.junit.jupiter.api.Assertions.assertEquals;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Futu... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-concurrency-advanced-5/src/main/java/com/baeldung/wait_synchronization/ConditionChecker.java | core-java-modules/core-java-concurrency-advanced-5/src/main/java/com/baeldung/wait_synchronization/ConditionChecker.java | package com.baeldung.wait_synchronization;
public class ConditionChecker {
private volatile boolean jobIsDone;
private final Object lock = new Object();
public void ensureCondition() {
synchronized (lock) {
while (!jobIsDone) {
try {
lock.wait();
... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-concurrency-advanced-5/src/main/java/com/baeldung/countdownlatchvssemaphore/SemaphoreDemo.java | core-java-modules/core-java-concurrency-advanced-5/src/main/java/com/baeldung/countdownlatchvssemaphore/SemaphoreDemo.java | package com.baeldung.countdownlatchvssemaphore;
import java.util.concurrent.Semaphore;
public class SemaphoreDemo {
public static void main(String[] args) {
// Create a Semaphore with a fixed number of permits
int NUM_PERMITS = 3;
Semaphore semaphore = new Semaphore(NUM_PERMITS);
... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-concurrency-advanced-5/src/main/java/com/baeldung/countdownlatchvssemaphore/CountDownLatchDemo.java | core-java-modules/core-java-concurrency-advanced-5/src/main/java/com/baeldung/countdownlatchvssemaphore/CountDownLatchDemo.java | package com.baeldung.countdownlatchvssemaphore;
import java.util.concurrent.CountDownLatch;
public class CountDownLatchDemo {
public static void main(String[] args) throws InterruptedException {
// Create a CountDownLatch with an initial count equal to the number of tasks to be completed
int numb... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-concurrency-advanced-5/src/main/java/com/baeldung/callback/completablefuture/CompletableFutureCallbackExample.java | core-java-modules/core-java-concurrency-advanced-5/src/main/java/com/baeldung/callback/completablefuture/CompletableFutureCallbackExample.java | package com.baeldung.callback.completablefuture;
import java.util.concurrent.CompletableFuture;
public class CompletableFutureCallbackExample {
public static void main(String[] args) {
CompletableFuture<String> completableFuture = new CompletableFuture<>();
Runnable runnable = downloadFile(complet... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-concurrency-advanced-5/src/main/java/com/baeldung/callback/listenablefuture/ListenableFutureCallbackExample.java | core-java-modules/core-java-concurrency-advanced-5/src/main/java/com/baeldung/callback/listenablefuture/ListenableFutureCallbackExample.java | package com.baeldung.callback.listenablefuture;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import com.google.common.util.concurrent.FutureCallback;
import com.google.common.util.concurrent.Futures;
import com.google.common.util.concurrent.... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-concurrency-advanced-5/src/main/java/com/baeldung/executerservicecustomthreadname/CustomThreadFactory.java | core-java-modules/core-java-concurrency-advanced-5/src/main/java/com/baeldung/executerservicecustomthreadname/CustomThreadFactory.java | package com.baeldung.executerservicecustomthreadname;
import java.util.concurrent.ThreadFactory;
import java.util.concurrent.atomic.AtomicInteger;
public class CustomThreadFactory implements ThreadFactory {
private AtomicInteger threadNumber = new AtomicInteger(1);
private String threadlNamePrefix = "";
... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-concurrency-advanced-5/src/main/java/com/baeldung/executerservicecustomthreadname/ExecuterServiceCustomThreadName.java | core-java-modules/core-java-concurrency-advanced-5/src/main/java/com/baeldung/executerservicecustomthreadname/ExecuterServiceCustomThreadName.java | package com.baeldung.executerservicecustomthreadname;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.ThreadFactory;
import org.apache.commons.lang3.concurrent.BasicThreadFactory;
import com.google.common.util.concurrent.ThreadFactoryBuilder;
import org.s... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-concurrency-advanced-5/src/main/java/com/baeldung/executorservicetest/MyRunnable.java | core-java-modules/core-java-concurrency-advanced-5/src/main/java/com/baeldung/executorservicetest/MyRunnable.java | package com.baeldung.executorservicetest;
public class MyRunnable implements Runnable {
Long result;
public Long getResult() {
return result;
}
public void setResult(Long result) {
this.result = result;
}
@Override
public void run() {
result = sum();
}
p... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-concurrency-advanced-5/src/main/java/com/baeldung/executorservicetest/MyThreadPoolExecutor.java | core-java-modules/core-java-concurrency-advanced-5/src/main/java/com/baeldung/executorservicetest/MyThreadPoolExecutor.java | package com.baeldung.executorservicetest;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;
public class MyThreadPoolExecutor extends ThreadPoolExecutor {
CountDownLatch doneSignal = null;
... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-concurrency-advanced-5/src/main/java/com/baeldung/executorservicevscompletablefuture/CompletableFutureDemo.java | core-java-modules/core-java-concurrency-advanced-5/src/main/java/com/baeldung/executorservicevscompletablefuture/CompletableFutureDemo.java | package com.baeldung.executorservicevscompletablefuture;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.CompletionException;
import java.util.concurrent.TimeUnit;
public class CompletableFutureDemo {
public static void completableFutureMethod() {
CompletableFuture<Integer> fut... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-concurrency-advanced-5/src/main/java/com/baeldung/executorservicevscompletablefuture/ExecutorServiceDemo.java | core-java-modules/core-java-concurrency-advanced-5/src/main/java/com/baeldung/executorservicevscompletablefuture/ExecutorServiceDemo.java | package com.baeldung.executorservicevscompletablefuture;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
public cl... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-oop-types/src/test/java/com/baeldung/objectclassguide/CarObjectUnitTests.java | core-java-modules/core-java-lang-oop-types/src/test/java/com/baeldung/objectclassguide/CarObjectUnitTests.java | package com.baeldung.objectclassguide;
import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.assertTrue;
import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNotSame;
pu... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-oop-types/src/test/java/com/baeldung/markerinterface/MarkerInterfaceUnitTest.java | core-java-modules/core-java-lang-oop-types/src/test/java/com/baeldung/markerinterface/MarkerInterfaceUnitTest.java | package com.baeldung.markerinterface;
import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.assertEquals;
public class MarkerInterfaceUnitTest {
@Test
public void givenDeletableObjectThenTrueReturned() {
ShapeDao shapeDao = new ShapeDao();
Object rectangle = new R... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-oop-types/src/test/java/com/baeldung/objects/ObjectsUnitTest.java | core-java-modules/core-java-lang-oop-types/src/test/java/com/baeldung/objects/ObjectsUnitTest.java | package com.baeldung.objects;
import org.junit.Before;
import org.junit.Test;
import static org.junit.Assert.*;
public class ObjectsUnitTest {
private Car car;
@Before
public void setUp() throws Exception {
car = new Car("Ford", "Focus", "red");
}
@Test
public final void when_s... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-oop-types/src/test/java/com/baeldung/enums/EnumSearcherUnitTest.java | core-java-modules/core-java-lang-oop-types/src/test/java/com/baeldung/enums/EnumSearcherUnitTest.java | package com.baeldung.enums;
import static org.assertj.core.api.Assertions.assertThatIllegalArgumentException;
import java.util.Optional;
import org.assertj.core.api.Assertions;
import org.junit.Test;
public class EnumSearcherUnitTest {
@Test
public void givenWeekdays_whenValidDirectionNameProvided_directio... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-oop-types/src/test/java/com/baeldung/enums/PizzaUnitTest.java | core-java-modules/core-java-lang-oop-types/src/test/java/com/baeldung/enums/PizzaUnitTest.java | package com.baeldung.enums;
import com.baeldung.enums.Pizza.PizzaStatusEnum;
import org.junit.Test;
import java.util.ArrayList;
import java.util.EnumMap;
import java.util.List;
import static junit.framework.TestCase.assertTrue;
public class PizzaUnitTest {
@Test
public void givenPizaOrder_whenReady_thenDel... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-oop-types/src/test/java/com/baeldung/enums/extendenum/ExtendEnumUnitTest.java | core-java-modules/core-java-lang-oop-types/src/test/java/com/baeldung/enums/extendenum/ExtendEnumUnitTest.java | package com.baeldung.enums.extendenum;
import org.junit.Test;
import static org.junit.jupiter.api.Assertions.*;
public class ExtendEnumUnitTest {
private Application app = new Application();
@Test
public void givenAStringAndOperation_whenApplyOperation_thenGetExpectedResult() {
String input = " ... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-oop-types/src/test/java/com/baeldung/enums/iteration/DaysOfWeekEnum.java | core-java-modules/core-java-lang-oop-types/src/test/java/com/baeldung/enums/iteration/DaysOfWeekEnum.java | package com.baeldung.enums.iteration;
import java.util.stream.Stream;
public enum DaysOfWeekEnum {
SUNDAY("off"),
MONDAY("working"),
TUESDAY("working"),
WEDNESDAY("working"),
THURSDAY("working"),
FRIDAY("working"),
SATURDAY("off");
private String typeOfDay;
DaysOfWeekEnum(String typeOfDay) {
this.t... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-oop-types/src/test/java/com/baeldung/enums/iteration/EnumIterationExamples.java | core-java-modules/core-java-lang-oop-types/src/test/java/com/baeldung/enums/iteration/EnumIterationExamples.java | package com.baeldung.enums.iteration;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.EnumSet;
import java.util.List;
public class EnumIterationExamples {
public static void main(String[] args) {
System.out.println("Enum iteration using EnumSet:");
EnumSet.allOf(DaysOfWeekEnum.class).forEa... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-oop-types/src/test/java/com/baeldung/enums/values/Element1UnitTest.java | core-java-modules/core-java-lang-oop-types/src/test/java/com/baeldung/enums/values/Element1UnitTest.java | package com.baeldung.enums.values;
import org.junit.After;
import org.junit.AfterClass;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Test;
import static org.junit.Assert.*;
/**
*
* @author chris
*/
public class Element1UnitTest {
public Element1UnitTest() {
}
@Befor... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-oop-types/src/test/java/com/baeldung/enums/values/Element2UnitTest.java | core-java-modules/core-java-lang-oop-types/src/test/java/com/baeldung/enums/values/Element2UnitTest.java | package com.baeldung.enums.values;
import org.junit.After;
import org.junit.AfterClass;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Test;
import static org.junit.Assert.*;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
*
* @author chris
*/
public class Element2UnitTest {
... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-oop-types/src/test/java/com/baeldung/enums/values/Element4UnitTest.java | core-java-modules/core-java-lang-oop-types/src/test/java/com/baeldung/enums/values/Element4UnitTest.java | /*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package com.baeldung.enums.values;
import org.junit.After;
import org.junit.AfterClass;
import org.junit.Before;
import org.junit.Befo... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-oop-types/src/test/java/com/baeldung/enums/values/Element3UnitTest.java | core-java-modules/core-java-lang-oop-types/src/test/java/com/baeldung/enums/values/Element3UnitTest.java | /*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package com.baeldung.enums.values;
import org.junit.After;
import org.junit.AfterClass;
import org.junit.Before;
import org.junit.Befo... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-oop-types/src/main/java/com/baeldung/objectclassguide/Car.java | core-java-modules/core-java-lang-oop-types/src/main/java/com/baeldung/objectclassguide/Car.java | package com.baeldung.objectclassguide;
import java.util.Objects;
/**
* Represents a car object, implementing Cloneable and overriding Object methods.
*
* The class uses standard implementation for equals(), hashCode(), and toString().
* The clone() method performs a shallow copy, which is sufficient since 'make'... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-oop-types/src/main/java/com/baeldung/markerinterface/DeletableShape.java | core-java-modules/core-java-lang-oop-types/src/main/java/com/baeldung/markerinterface/DeletableShape.java | package com.baeldung.markerinterface;
public interface DeletableShape extends Shape {
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-oop-types/src/main/java/com/baeldung/markerinterface/Shape.java | core-java-modules/core-java-lang-oop-types/src/main/java/com/baeldung/markerinterface/Shape.java | package com.baeldung.markerinterface;
public interface Shape {
double getArea();
double getCircumference();
} | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-oop-types/src/main/java/com/baeldung/markerinterface/Rectangle.java | core-java-modules/core-java-lang-oop-types/src/main/java/com/baeldung/markerinterface/Rectangle.java | package com.baeldung.markerinterface;
public class Rectangle implements DeletableShape {
private double width;
private double height;
public Rectangle(double width, double height) {
this.width = width;
this.height = height;
}
@Override
public double getArea() {
return... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-oop-types/src/main/java/com/baeldung/markerinterface/ShapeDao.java | core-java-modules/core-java-lang-oop-types/src/main/java/com/baeldung/markerinterface/ShapeDao.java | package com.baeldung.markerinterface;
public class ShapeDao {
public boolean delete(Object object) {
if (!(object instanceof DeletableShape)) {
return false;
}
// Calling the code that deletes the entity from the database
return true;
}
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-oop-types/src/main/java/com/baeldung/objects/Car.java | core-java-modules/core-java-lang-oop-types/src/main/java/com/baeldung/objects/Car.java | package com.baeldung.objects;
public class Car {
private String type;
private String model;
private String color;
private int speed;
public Car(String type, String model, String color) {
this.type = type;
this.model = model;
this.color = color;
}
public String get... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-oop-types/src/main/java/com/baeldung/enums/PizzaDeliverySystemConfiguration.java | core-java-modules/core-java-lang-oop-types/src/main/java/com/baeldung/enums/PizzaDeliverySystemConfiguration.java | package com.baeldung.enums;
public enum PizzaDeliverySystemConfiguration {
INSTANCE;
PizzaDeliverySystemConfiguration() {
// Do the configuration initialization which
// involves overriding defaults like delivery strategy
}
private PizzaDeliveryStrategy deliveryStrategy = PizzaDeliver... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-oop-types/src/main/java/com/baeldung/enums/Weekday.java | core-java-modules/core-java-lang-oop-types/src/main/java/com/baeldung/enums/Weekday.java | package com.baeldung.enums;
/**
* Represents day in a week.
*/
public enum Weekday {
/**
* Monday.
*/
MONDAY("Monday"),
/**
* Tuesday.
*/
TUESDAY("Tuesday"),
/**
* Wednesday.
*/
WEDNESDAY("Wednesday"),
/**
* Thursday.
*/
THURSDAY("Thursday"),
... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-oop-types/src/main/java/com/baeldung/enums/Month.java | core-java-modules/core-java-lang-oop-types/src/main/java/com/baeldung/enums/Month.java | package com.baeldung.enums;
import java.util.Arrays;
import java.util.Optional;
/**
* Represents months in a year.
*/
public enum Month {
/**
* January.
*/
JANUARY("January", 1),
/**
* February.
*/
FEBRUARY("February", 2),
/**
* March.
*/
MARCH("March", 3),
... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-oop-types/src/main/java/com/baeldung/enums/EnumSearcher.java | core-java-modules/core-java-lang-oop-types/src/main/java/com/baeldung/enums/EnumSearcher.java | package com.baeldung.enums;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class EnumSearcher {
private static final Logger LOG = LoggerFactory.getLogger(EnumSearcher.class);
public static void main(String[] args) {
EnumSearcher enumSearcher = new EnumSearcher();
enumSearcher... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-oop-types/src/main/java/com/baeldung/enums/Pizza.java | core-java-modules/core-java-lang-oop-types/src/main/java/com/baeldung/enums/Pizza.java | package com.baeldung.enums;
import java.util.EnumMap;
import java.util.EnumSet;
import java.util.List;
import java.util.stream.Collectors;
public class Pizza {
private static EnumSet<PizzaStatusEnum> deliveredPizzaStatuses = EnumSet.of(PizzaStatusEnum.DELIVERED);
private PizzaStatusEnum status;
public ... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-oop-types/src/main/java/com/baeldung/enums/Direction.java | core-java-modules/core-java-lang-oop-types/src/main/java/com/baeldung/enums/Direction.java | package com.baeldung.enums;
/**
* Represents directions.
*/
public enum Direction {
EAST, WEST, SOUTH, NORTH;
/**
* Finds direction by name.
*
* @param name the name
* @return the direction if found else null
*/
public static Direction findByName(String name) {
Direction... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-oop-types/src/main/java/com/baeldung/enums/PizzaDeliveryStrategy.java | core-java-modules/core-java-lang-oop-types/src/main/java/com/baeldung/enums/PizzaDeliveryStrategy.java | package com.baeldung.enums;
public enum PizzaDeliveryStrategy {
EXPRESS {
@Override
public void deliver(Pizza pz) {
System.out.println("Pizza will be delivered in express mode");
}
},
NORMAL {
@Override
public void deliver(Pizza pz) {
System.o... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-oop-types/src/main/java/com/baeldung/enums/extendenum/ExtendedStringOperation.java | core-java-modules/core-java-lang-oop-types/src/main/java/com/baeldung/enums/extendenum/ExtendedStringOperation.java | package com.baeldung.enums.extendenum;
import org.apache.commons.codec.binary.Base64;
import org.apache.commons.codec.digest.DigestUtils;
public enum ExtendedStringOperation implements StringOperation {
MD5_ENCODE("Encoding the given string using the MD5 algorithm.") {
@Override
public String appl... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-oop-types/src/main/java/com/baeldung/enums/extendenum/Operator.java | core-java-modules/core-java-lang-oop-types/src/main/java/com/baeldung/enums/extendenum/Operator.java | package com.baeldung.enums.extendenum;
public interface Operator {
String apply(String input);
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-oop-types/src/main/java/com/baeldung/enums/extendenum/StringOperation.java | core-java-modules/core-java-lang-oop-types/src/main/java/com/baeldung/enums/extendenum/StringOperation.java | package com.baeldung.enums.extendenum;
public interface StringOperation {
String getDescription();
String apply(String input);
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-oop-types/src/main/java/com/baeldung/enums/extendenum/ApplicationWithEx.java | core-java-modules/core-java-lang-oop-types/src/main/java/com/baeldung/enums/extendenum/ApplicationWithEx.java | package com.baeldung.enums.extendenum;
import org.apache.commons.lang3.StringUtils;
import java.util.Arrays;
import java.util.EnumMap;
import java.util.Map;
public class ApplicationWithEx {
private static final Map<ImmutableOperation, Operator> OPERATION_MAP;
static {
OPERATION_MAP = new EnumMap<>(I... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-oop-types/src/main/java/com/baeldung/enums/extendenum/ImmutableOperation.java | core-java-modules/core-java-lang-oop-types/src/main/java/com/baeldung/enums/extendenum/ImmutableOperation.java | package com.baeldung.enums.extendenum;
public enum ImmutableOperation {
REMOVE_WHITESPACES, TO_LOWER, INVERT_CASE
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-oop-types/src/main/java/com/baeldung/enums/extendenum/BasicStringOperation.java | core-java-modules/core-java-lang-oop-types/src/main/java/com/baeldung/enums/extendenum/BasicStringOperation.java | package com.baeldung.enums.extendenum;
public enum BasicStringOperation implements StringOperation {
TRIM("Removing leading and trailing spaces.") {
@Override
public String apply(String input) {
return input.trim();
}
},
TO_UPPER("Changing all characters into upper case.... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-oop-types/src/main/java/com/baeldung/enums/extendenum/Application.java | core-java-modules/core-java-lang-oop-types/src/main/java/com/baeldung/enums/extendenum/Application.java | package com.baeldung.enums.extendenum;
import org.apache.commons.lang3.StringUtils;
import java.util.Arrays;
import java.util.EnumMap;
import java.util.Map;
public class Application {
private static final Map<ImmutableOperation, Operator> OPERATION_MAP;
static {
OPERATION_MAP = new EnumMap<>(Immutab... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-oop-types/src/main/java/com/baeldung/enums/values/Element3.java | core-java-modules/core-java-lang-oop-types/src/main/java/com/baeldung/enums/values/Element3.java | package com.baeldung.enums.values;
import java.util.HashMap;
import java.util.Map;
/**
* A Map has been added to cache labels for faster lookup.
*/
public enum Element3 {
H("Hydrogen"),
HE("Helium"),
LI("Lithium"),
BE("Beryllium"),
B("Boron"),
C("Carbon"),
N("Nitrogen"),
O("Oxygen"),... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-oop-types/src/main/java/com/baeldung/enums/values/Element1.java | core-java-modules/core-java-lang-oop-types/src/main/java/com/baeldung/enums/values/Element1.java | package com.baeldung.enums.values;
/**
* This is a simple enum of periodic table elements
*/
public enum Element1 {
H,
HE,
LI,
BE,
B,
C,
N,
O,
F,
NE
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-oop-types/src/main/java/com/baeldung/enums/values/Element4.java | core-java-modules/core-java-lang-oop-types/src/main/java/com/baeldung/enums/values/Element4.java | package com.baeldung.enums.values;
import java.util.HashMap;
import java.util.Map;
/**
* Multiple fields have been added and the Labeled interface is implemented.
*/
public enum Element4 implements Labeled {
H("Hydrogen", 1, 1.008f),
HE("Helium", 2, 4.0026f),
LI("Lithium", 3, 6.94f),
BE("Beryllium",... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-oop-types/src/main/java/com/baeldung/enums/values/Labeled.java | core-java-modules/core-java-lang-oop-types/src/main/java/com/baeldung/enums/values/Labeled.java | package com.baeldung.enums.values;
public interface Labeled {
String label();
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-lang-oop-types/src/main/java/com/baeldung/enums/values/Element2.java | core-java-modules/core-java-lang-oop-types/src/main/java/com/baeldung/enums/values/Element2.java | package com.baeldung.enums.values;
import java.util.Objects;
/**
* The simple enum has been enhanced to add the name of the element.
*/
public enum Element2 {
H("Hydrogen"),
HE("Helium"),
LI("Lithium"),
BE("Beryllium"),
B("Boron"),
C("Carbon"),
N("Nitrogen"),
O("Oxygen"),
// Fixe... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-collections-array-list-2/src/test/java/com/baeldung/peakelements/SinglePeakFinderUnitTest.java | core-java-modules/core-java-collections-array-list-2/src/test/java/com/baeldung/peakelements/SinglePeakFinderUnitTest.java | package com.baeldung.peakelements;
import static org.junit.jupiter.api.Assertions.assertEquals;
import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.assertTrue;
import java.util.OptionalInt;
public class SinglePeakFinderUnitTest {
@Test
void findSinglePeak_givenArrayOfIntegers_wh... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-collections-array-list-2/src/test/java/com/baeldung/peakelements/PeakElementFinderUnitTest.java | core-java-modules/core-java-collections-array-list-2/src/test/java/com/baeldung/peakelements/PeakElementFinderUnitTest.java | package com.baeldung.peakelements;
import org.junit.jupiter.api.Test;
import java.util.List;
import static org.junit.jupiter.api.Assertions.*;
public class PeakElementFinderUnitTest {
@Test
void findPeakElement_givenArrayOfIntegers_whenValidInput_thenReturnsCorrectPeak() {
PeakElementFinder finder ... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/core-java-modules/core-java-collections-array-list-2/src/test/java/com/baeldung/peakelements/MultiplePeakFinderUnitTest.java | core-java-modules/core-java-collections-array-list-2/src/test/java/com/baeldung/peakelements/MultiplePeakFinderUnitTest.java | package com.baeldung.peakelements;
import org.junit.jupiter.api.Test;
import java.util.List;
import static org.junit.jupiter.api.Assertions.*;
public class MultiplePeakFinderUnitTest {
@Test
void findPeaks_givenArrayOfIntegers_whenValidInput_thenReturnsCorrectPeaks() {
MultiplePeakFinder finder = n... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.