repo stringclasses 1k
values | file_url stringlengths 96 373 | file_path stringlengths 11 294 | content stringlengths 0 32.8k | language stringclasses 1
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values | retrieved_at stringdate 2026-01-04 14:45:56 2026-01-04 18:30:23 | truncated bool 2
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eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral/src/test/java/com/baeldung/command/test/OpenTextFileOperationUnitTest.java | patterns-modules/design-patterns-behavioral/src/test/java/com/baeldung/command/test/OpenTextFileOperationUnitTest.java | package com.baeldung.command.test;
import static org.assertj.core.api.Assertions.assertThat;
import org.junit.Test;
import com.baeldung.command.command.OpenTextFileOperation;
import com.baeldung.command.command.TextFileOperation;
import com.baeldung.command.receiver.TextFile;
public class OpenTextFileOperationUnitT... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral/src/test/java/com/baeldung/command/test/SaveTextFileOperationUnitTest.java | patterns-modules/design-patterns-behavioral/src/test/java/com/baeldung/command/test/SaveTextFileOperationUnitTest.java | package com.baeldung.command.test;
import static org.assertj.core.api.Assertions.assertThat;
import org.junit.Test;
import com.baeldung.command.command.SaveTextFileOperation;
import com.baeldung.command.command.TextFileOperation;
import com.baeldung.command.receiver.TextFile;
public class SaveTextFileOperationUnitT... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral/src/test/java/com/baeldung/observer/ObserverIntegrationTest.java | patterns-modules/design-patterns-behavioral/src/test/java/com/baeldung/observer/ObserverIntegrationTest.java | package com.baeldung.observer;
import static org.junit.Assert.assertEquals;
import org.junit.Test;
import com.baeldung.observer.NewsAgency;
import com.baeldung.observer.NewsChannel;
public class ObserverIntegrationTest {
@Test
public void whenChangingNewsAgencyState_thenNewsChannelNotified() {
New... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral/src/test/java/com/baeldung/nulls/UsingStringUtilsUnitTest.java | patterns-modules/design-patterns-behavioral/src/test/java/com/baeldung/nulls/UsingStringUtilsUnitTest.java | package com.baeldung.nulls;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.assertThrows;
class UsingStringUtilsUnitTest {
private UsingStringUtils classUnderTest;
@BeforeEach
public void setup() {
classUnderTest = new U... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral/src/test/java/com/baeldung/nulls/UsingObjectsUnitTest.java | patterns-modules/design-patterns-behavioral/src/test/java/com/baeldung/nulls/UsingObjectsUnitTest.java | package com.baeldung.nulls;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.assertDoesNotThrow;
import static org.junit.jupiter.api.Assertions.assertThrows;
class UsingObjectsUnitTest {
private UsingObjects classUnderTest;
@BeforeEa... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral/src/test/java/com/baeldung/nulls/PrimitivesAndWrapperUnitTest.java | patterns-modules/design-patterns-behavioral/src/test/java/com/baeldung/nulls/PrimitivesAndWrapperUnitTest.java | package com.baeldung.nulls;
import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertThrows;
class PrimitivesAndWrapperUnitTest {
@Test
public void givenBothArgsNonNull_whenCallingWrapperSum_thenReturnSum() {
... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral/src/test/java/com/baeldung/nulls/UsingLombokUnitTest.java | patterns-modules/design-patterns-behavioral/src/test/java/com/baeldung/nulls/UsingLombokUnitTest.java | package com.baeldung.nulls;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.assertThrows;
class UsingLombokUnitTest {
private UsingLombok classUnderTest;
@BeforeEach
public void setup() {
classUnderTest = new UsingLombok... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral/src/test/java/com/baeldung/nulls/UsingOptionalUnitTest.java | patterns-modules/design-patterns-behavioral/src/test/java/com/baeldung/nulls/UsingOptionalUnitTest.java | package com.baeldung.nulls;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import java.util.Optional;
import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertThrows;
import static org.junit.jupiter.api.Assertions.assertTrue;
class... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral/src/test/java/com/baeldung/chainofresponsibility/ChainOfResponsibilityIntegrationTest.java | patterns-modules/design-patterns-behavioral/src/test/java/com/baeldung/chainofresponsibility/ChainOfResponsibilityIntegrationTest.java | package com.baeldung.chainofresponsibility;
import static org.junit.Assert.assertTrue;
import org.junit.Test;
public class ChainOfResponsibilityIntegrationTest {
private static AuthenticationProcessor getChainOfAuthProcessor() {
AuthenticationProcessor oAuthProcessor = new OAuthAuthenticationProcessor(... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/state/Package.java | patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/state/Package.java | package com.baeldung.state;
public class Package {
private PackageState state = new OrderedState();
public PackageState getState() {
return state;
}
public void setState(PackageState state) {
this.state = state;
}
public void previousState() {
state.prev(this);
}... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/state/PackageState.java | patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/state/PackageState.java | package com.baeldung.state;
public interface PackageState {
void next(Package pkg);
void prev(Package pkg);
void printStatus();
} | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/state/OrderedState.java | patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/state/OrderedState.java | package com.baeldung.state;
public class OrderedState implements PackageState {
@Override
public void next(Package pkg) {
pkg.setState(new DeliveredState());
}
@Override
public void prev(Package pkg) {
System.out.println("The package is in it's root state.");
}
@Override
... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/state/StateDemo.java | patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/state/StateDemo.java | package com.baeldung.state;
public class StateDemo {
public static void main(String[] args) {
Package pkg = new Package();
pkg.printStatus();
pkg.nextState();
pkg.printStatus();
pkg.nextState();
pkg.printStatus();
pkg.nextState();
pkg.printStatus... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/state/ReceivedState.java | patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/state/ReceivedState.java | package com.baeldung.state;
public class ReceivedState implements PackageState {
@Override
public void next(Package pkg) {
System.out.println("This package is already received by a client.");
}
@Override
public void prev(Package pkg) {
pkg.setState(new DeliveredState());
}
... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/state/DeliveredState.java | patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/state/DeliveredState.java | package com.baeldung.state;
public class DeliveredState implements PackageState {
@Override
public void next(Package pkg) {
pkg.setState(new ReceivedState());
}
@Override
public void prev(Package pkg) {
pkg.setState(new OrderedState());
}
@Override
public void printSt... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/visitor/ElementVisitor.java | patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/visitor/ElementVisitor.java | package com.baeldung.visitor;
public class ElementVisitor implements Visitor {
@Override
public void visit(XmlElement xe) {
System.out.println("processing xml element with uuid: " + xe.uuid);
}
@Override
public void visit(JsonElement je) {
System.out.println("processing json eleme... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/visitor/JsonElement.java | patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/visitor/JsonElement.java | package com.baeldung.visitor;
public class JsonElement extends Element {
public JsonElement(String uuid) {
super(uuid);
}
public void accept(Visitor v) {
v.visit(this);
}
} | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/visitor/VisitorDemo.java | patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/visitor/VisitorDemo.java | package com.baeldung.visitor;
import java.util.UUID;
public class VisitorDemo {
public static void main(String[] args) {
Visitor v = new ElementVisitor();
Document d = new Document(generateUuid());
d.elements.add(new JsonElement(generateUuid()));
d.elements.add(new JsonElement(g... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/visitor/Document.java | patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/visitor/Document.java | package com.baeldung.visitor;
import java.util.ArrayList;
import java.util.List;
public class Document extends Element {
List<Element> elements = new ArrayList<>();
public Document(String uuid) {
super(uuid);
}
@Override
public void accept(Visitor v) {
for (Element e : this.elem... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/visitor/Visitor.java | patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/visitor/Visitor.java | package com.baeldung.visitor;
public interface Visitor {
void visit(XmlElement xe);
void visit(JsonElement je);
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/visitor/XmlElement.java | patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/visitor/XmlElement.java | package com.baeldung.visitor;
public class XmlElement extends Element {
public XmlElement(String uuid) {
super(uuid);
}
public void accept(Visitor v) {
v.visit(this);
}
} | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/visitor/Element.java | patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/visitor/Element.java | package com.baeldung.visitor;
public abstract class Element {
public String uuid;
public Element(String uuid) {
this.uuid = uuid;
}
public abstract void accept(Visitor v);
} | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/command/command/TextFileOperation.java | patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/command/command/TextFileOperation.java | package com.baeldung.command.command;
@FunctionalInterface
public interface TextFileOperation {
String execute();
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/command/command/SaveTextFileOperation.java | patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/command/command/SaveTextFileOperation.java | package com.baeldung.command.command;
import com.baeldung.command.receiver.TextFile;
public class SaveTextFileOperation implements TextFileOperation {
private final TextFile textFile;
public SaveTextFileOperation(TextFile textFile) {
this.textFile = textFile;
}
@Override
pub... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/command/command/OpenTextFileOperation.java | patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/command/command/OpenTextFileOperation.java | package com.baeldung.command.command;
import com.baeldung.command.receiver.TextFile;
public class OpenTextFileOperation implements TextFileOperation {
private final TextFile textFile;
public OpenTextFileOperation(TextFile textFile) {
this.textFile = textFile;
}
@Override
public ... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/command/invoker/TextFileOperationExecutor.java | patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/command/invoker/TextFileOperationExecutor.java | package com.baeldung.command.invoker;
import com.baeldung.command.command.TextFileOperation;
import java.util.ArrayList;
import java.util.List;
public class TextFileOperationExecutor {
private final List<TextFileOperation> textFileOperations = new ArrayList<>();
public String executeOperation(TextFi... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/command/receiver/TextFile.java | patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/command/receiver/TextFile.java | package com.baeldung.command.receiver;
public class TextFile {
private final String name;
public TextFile(String name) {
this.name = name;
}
public String open() {
return "Opening file " + name;
}
public String read() {
return "Reading file " + name... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/command/client/TextFileApplication.java | patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/command/client/TextFileApplication.java | package com.baeldung.command.client;
import com.baeldung.command.command.OpenTextFileOperation;
import com.baeldung.command.command.SaveTextFileOperation;
import com.baeldung.command.command.TextFileOperation;
import com.baeldung.command.invoker.TextFileOperationExecutor;
import com.baeldung.command.receiver.TextFile;... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/observer/PCLNewsAgency.java | patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/observer/PCLNewsAgency.java | package com.baeldung.observer;
import java.beans.PropertyChangeListener;
import java.beans.PropertyChangeSupport;
public class PCLNewsAgency {
private String news;
private PropertyChangeSupport support;
public PCLNewsAgency() {
support = new PropertyChangeSupport(this);
}
public void ad... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/observer/ONewsChannel.java | patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/observer/ONewsChannel.java | package com.baeldung.observer;
import java.util.Observable;
import java.util.Observer;
public class ONewsChannel implements Observer {
private String news;
@Override
public void update(Observable o, Object news) {
this.setNews((String) news);
}
public String getNews() {
return n... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/observer/Channel.java | patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/observer/Channel.java | package com.baeldung.observer;
public interface Channel {
public void update(Object o);
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/observer/ONewsAgency.java | patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/observer/ONewsAgency.java | package com.baeldung.observer;
import java.util.Observable;
public class ONewsAgency extends Observable {
private String news;
public void setNews(String news) {
this.news = news;
setChanged();
notifyObservers(news);
}
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/observer/PCLNewsChannel.java | patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/observer/PCLNewsChannel.java | package com.baeldung.observer;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
public class PCLNewsChannel implements PropertyChangeListener {
private String news;
public void propertyChange(PropertyChangeEvent evt) {
this.setNews((String) evt.getNewValue());
}
... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/observer/NewsChannel.java | patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/observer/NewsChannel.java | package com.baeldung.observer;
public class NewsChannel implements Channel {
private String news;
@Override
public void update(Object news) {
this.setNews((String) news);
}
public String getNews() {
return news;
}
public void setNews(String news) {
this.news = ne... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/observer/NewsAgency.java | patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/observer/NewsAgency.java | package com.baeldung.observer;
import java.util.ArrayList;
import java.util.List;
public class NewsAgency {
private String news;
private List<Channel> channels = new ArrayList<>();
public void addObserver(Channel channel) {
this.channels.add(channel);
}
public void removeObserver(Channel... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/nulls/Assertions.java | patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/nulls/Assertions.java | package com.baeldung.nulls;
public class Assertions {
public void accept(Object param){
assert param != null;
doSomething(param);
}
private void doSomething(Object param) {
}
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/nulls/APIContracts.java | patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/nulls/APIContracts.java | package com.baeldung.nulls;
public class APIContracts {
/**
* Prints the value of {@code param} if not null. Prints {@code null} otherwise.
*
* @param param
*/
public void print(Object param) {
System.out.println("Printing " + param);
}
/**
* @return non null result
... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/nulls/UsingOptional.java | patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/nulls/UsingOptional.java | package com.baeldung.nulls;
import java.util.List;
import java.util.Optional;
import static java.util.Collections.emptyList;
public class UsingOptional {
public static final String DEFAULT_VALUE = "Default Value";
public Optional<Object> process(boolean processed) {
String response = doSomething(pr... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/nulls/UsingStringUtils.java | patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/nulls/UsingStringUtils.java | package com.baeldung.nulls;
import org.apache.commons.lang3.StringUtils;
public class UsingStringUtils {
public void accept(String param) {
if (StringUtils.isNotEmpty(param)) {
System.out.println(param);
} else {
throw new IllegalArgumentException();
}
}
p... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/nulls/UsingLombok.java | patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/nulls/UsingLombok.java | package com.baeldung.nulls;
import lombok.NonNull;
public class UsingLombok {
public void accept(@NonNull Object param){
System.out.println(param);
}
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/nulls/EmptyCollections.java | patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/nulls/EmptyCollections.java | package com.baeldung.nulls;
import java.util.Collections;
import java.util.List;
import java.util.stream.Collectors;
import java.util.stream.Stream;
public class EmptyCollections {
public List<String> names() {
if (userExist()) {
return Stream.of(readName()).collect(Collectors.toList());
... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/nulls/FindBugsAnnotations.java | patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/nulls/FindBugsAnnotations.java | package com.baeldung.nulls;
import edu.umd.cs.findbugs.annotations.NonNull;
import edu.umd.cs.findbugs.annotations.Nullable;
public class FindBugsAnnotations {
public void accept(@NonNull Object param) {
System.out.println(param.toString());
}
public void print(@Nullable Object param) {
... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/nulls/Preconditions.java | patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/nulls/Preconditions.java | package com.baeldung.nulls;
public class Preconditions {
public void goodAccept(String one, String two, String three) {
if (one == null || two == null || three == null) {
throw new IllegalArgumentException();
}
process(one);
process(two);
process(three);
}
... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/nulls/UsingObjects.java | patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/nulls/UsingObjects.java | package com.baeldung.nulls;
import java.util.Objects;
public class UsingObjects {
public void accept(Object param) {
Objects.requireNonNull(param);
// doSomething()
}
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/nulls/PrimitivesAndWrapper.java | patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/nulls/PrimitivesAndWrapper.java | package com.baeldung.nulls;
public class PrimitivesAndWrapper {
public static int primitiveSum(int a, int b) {
return a + b;
}
public static Integer wrapperSum(Integer a, Integer b) {
return a + b;
}
public static Integer goodSum(Integer a, Integer b) {
if (a != null && b... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/chainofresponsibility/UsernamePasswordProvider.java | patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/chainofresponsibility/UsernamePasswordProvider.java | package com.baeldung.chainofresponsibility;
public class UsernamePasswordProvider implements AuthenticationProvider {
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/chainofresponsibility/AuthenticationProcessor.java | patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/chainofresponsibility/AuthenticationProcessor.java | package com.baeldung.chainofresponsibility;
public abstract class AuthenticationProcessor {
// next element in chain or responsibility
public AuthenticationProcessor nextProcessor;
public AuthenticationProcessor(AuthenticationProcessor nextProcessor) {
this.nextProcessor = nextProcessor;
... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/chainofresponsibility/OAuthAuthenticationProcessor.java | patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/chainofresponsibility/OAuthAuthenticationProcessor.java | package com.baeldung.chainofresponsibility;
public class OAuthAuthenticationProcessor extends AuthenticationProcessor {
public OAuthAuthenticationProcessor(AuthenticationProcessor nextProcessor) {
super(nextProcessor);
}
@Override
public boolean isAuthorized(AuthenticationProvider authProvide... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/chainofresponsibility/OAuthTokenProvider.java | patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/chainofresponsibility/OAuthTokenProvider.java | package com.baeldung.chainofresponsibility;
public class OAuthTokenProvider implements AuthenticationProvider {
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/chainofresponsibility/UsernamePasswordAuthenticationProcessor.java | patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/chainofresponsibility/UsernamePasswordAuthenticationProcessor.java | package com.baeldung.chainofresponsibility;
public class UsernamePasswordAuthenticationProcessor extends AuthenticationProcessor {
public UsernamePasswordAuthenticationProcessor(AuthenticationProcessor nextProcessor) {
super(nextProcessor);
}
@Override
public boolean isAuthorized(Authenticati... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/chainofresponsibility/AuthenticationProvider.java | patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/chainofresponsibility/AuthenticationProvider.java | package com.baeldung.chainofresponsibility;
public interface AuthenticationProvider {
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/chainofresponsibility/SamlAuthenticationProvider.java | patterns-modules/design-patterns-behavioral/src/main/java/com/baeldung/chainofresponsibility/SamlAuthenticationProvider.java | package com.baeldung.chainofresponsibility;
public class SamlAuthenticationProvider implements AuthenticationProvider {
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-cloud/src/test/java/com/baeldung/backoff/jitter/BackoffWithJitterUnitTest.java | patterns-modules/design-patterns-cloud/src/test/java/com/baeldung/backoff/jitter/BackoffWithJitterUnitTest.java | package com.baeldung.backoff.jitter;
import io.github.resilience4j.core.IntervalFunction;
import io.github.resilience4j.retry.Retry;
import io.github.resilience4j.retry.RetryConfig;
import org.junit.Before;
import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.time.LocalDateTime;... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral-2/src/test/java/com/baeldung/fluentinterface/FluentInterfaceUnitTest.java | patterns-modules/design-patterns-behavioral-2/src/test/java/com/baeldung/fluentinterface/FluentInterfaceUnitTest.java | package com.baeldung.fluentinterface;
import com.baeldung.fluentinterface.components.*;
import com.baeldung.fluentinterface.components.HtmlHeader.Type;
import org.junit.jupiter.api.Test;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import static com.baeldung.fluentinterface.components.HtmlList... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral-2/src/test/java/com/baeldung/mediator/MediatorIntegrationTest.java | patterns-modules/design-patterns-behavioral-2/src/test/java/com/baeldung/mediator/MediatorIntegrationTest.java | package com.baeldung.mediator;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import org.junit.Before;
import org.junit.Test;
public class MediatorIntegrationTest {
private Button button;
private Fan fan;
@Before
public void setUp() {
this.button = ne... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral-2/src/test/java/com/baeldung/memento/TextEditorUnitTest.java | patterns-modules/design-patterns-behavioral-2/src/test/java/com/baeldung/memento/TextEditorUnitTest.java | package com.baeldung.memento;
import org.junit.jupiter.api.Test;
import static org.assertj.core.api.Assertions.assertThat;
class TextEditorUnitTest {
@Test
void givenTextEditor_whenAddTextSaveAddMoreAndUndo_thenSavecStateRestored() {
TextEditor textEditor = new TextEditor(new TextWindow());
... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral-2/src/test/java/com/baeldung/templatemethod/test/TemplateMethodPatternIntegrationTest.java | patterns-modules/design-patterns-behavioral-2/src/test/java/com/baeldung/templatemethod/test/TemplateMethodPatternIntegrationTest.java | package com.baeldung.templatemethod.test;
import static org.hamcrest.CoreMatchers.instanceOf;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertThat;
import org.junit.Assert;
import org.junit.BeforeClass;
import org.junit.Test;
import com.baeldung.templatemethod.model.Computer;
import... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral-2/src/test/java/com/baeldung/nullconversion/NullReturningPersonChainProvider.java | patterns-modules/design-patterns-behavioral-2/src/test/java/com/baeldung/nullconversion/NullReturningPersonChainProvider.java | package com.baeldung.nullconversion;
import java.util.stream.Stream;
import org.junit.jupiter.api.extension.ExtensionContext;
import org.junit.jupiter.params.provider.Arguments;
import org.junit.jupiter.params.provider.ArgumentsProvider;
public class NullReturningPersonChainProvider implements ArgumentsProvider {
... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral-2/src/test/java/com/baeldung/nullconversion/OnePersonDeliveryServiceUnitTest.java | patterns-modules/design-patterns-behavioral-2/src/test/java/com/baeldung/nullconversion/OnePersonDeliveryServiceUnitTest.java | package com.baeldung.nullconversion;
import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.assertThatExceptionOfType;
import com.baeldung.nullconversion.service.OnePersonExplicitDeliveryService;
import com.baeldung.nullconversion.service.OnePersonGuavaOptionalDeliver... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral-2/src/test/java/com/baeldung/nullconversion/PersonProvider.java | patterns-modules/design-patterns-behavioral-2/src/test/java/com/baeldung/nullconversion/PersonProvider.java | package com.baeldung.nullconversion;
import java.util.function.Consumer;
import java.util.stream.Stream;
import org.junit.jupiter.api.extension.ExtensionContext;
import org.junit.jupiter.params.provider.Arguments;
import org.junit.jupiter.params.provider.ArgumentsProvider;
public class PersonProvider implements Argum... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral-2/src/test/java/com/baeldung/nullconversion/NullConversionUnitTest.java | patterns-modules/design-patterns-behavioral-2/src/test/java/com/baeldung/nullconversion/NullConversionUnitTest.java | package com.baeldung.nullconversion;
import static java.util.Objects.requireNonNullElse;
import static java.util.Objects.requireNonNullElseGet;
import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.assertThatExceptionOfType;
import com.google.common.base.MoreObjects;
... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral-2/src/test/java/com/baeldung/nullconversion/ObjectsSupplierProvider.java | patterns-modules/design-patterns-behavioral-2/src/test/java/com/baeldung/nullconversion/ObjectsSupplierProvider.java | package com.baeldung.nullconversion;
import java.util.function.Supplier;
import java.util.stream.Stream;
import org.junit.jupiter.api.extension.ExtensionContext;
import org.junit.jupiter.params.provider.Arguments;
import org.junit.jupiter.params.provider.ArgumentsProvider;
public class ObjectsSupplierProvider impleme... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral-2/src/test/java/com/baeldung/nullconversion/PersonMutatorUtil.java | patterns-modules/design-patterns-behavioral-2/src/test/java/com/baeldung/nullconversion/PersonMutatorUtil.java | package com.baeldung.nullconversion;
import java.util.function.Consumer;
public class PersonMutatorUtil {
public static Person cloneAndMutate(Person person, Consumer<Person> mutator) {
Person clone = person.clone();
mutator.accept(clone);
return clone;
}
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral-2/src/test/java/com/baeldung/nullconversion/ObjectsProvider.java | patterns-modules/design-patterns-behavioral-2/src/test/java/com/baeldung/nullconversion/ObjectsProvider.java | package com.baeldung.nullconversion;
import java.util.stream.Stream;
import org.junit.jupiter.api.extension.ExtensionContext;
import org.junit.jupiter.params.provider.Arguments;
import org.junit.jupiter.params.provider.ArgumentsProvider;
public class ObjectsProvider implements ArgumentsProvider {
@Override
p... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral-2/src/test/java/com/baeldung/nullconversion/service/OnePersonExplicitDeliveryService.java | patterns-modules/design-patterns-behavioral-2/src/test/java/com/baeldung/nullconversion/service/OnePersonExplicitDeliveryService.java | package com.baeldung.nullconversion.service;
import com.baeldung.nullconversion.Delivery;
import com.baeldung.nullconversion.Person;
import com.baeldung.nullconversion.ZipCode;
public class OnePersonExplicitDeliveryService extends MockOnePersonDeliveryServiceBase {
public OnePersonExplicitDeliveryService(Person... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral-2/src/test/java/com/baeldung/nullconversion/service/OnePersonOptionalDeliveryService.java | patterns-modules/design-patterns-behavioral-2/src/test/java/com/baeldung/nullconversion/service/OnePersonOptionalDeliveryService.java | package com.baeldung.nullconversion.service;
import com.baeldung.nullconversion.Address;
import com.baeldung.nullconversion.Delivery;
import com.baeldung.nullconversion.Person;
import com.baeldung.nullconversion.ZipCode;
import java.util.Optional;
public class OnePersonOptionalDeliveryService extends MockOnePersonDel... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral-2/src/test/java/com/baeldung/nullconversion/service/OnePersonGuavaOptionalDeliveryService.java | patterns-modules/design-patterns-behavioral-2/src/test/java/com/baeldung/nullconversion/service/OnePersonGuavaOptionalDeliveryService.java | package com.baeldung.nullconversion.service;
import com.baeldung.nullconversion.Address;
import com.baeldung.nullconversion.Delivery;
import com.baeldung.nullconversion.Person;
import com.baeldung.nullconversion.ZipCode;
import com.google.common.base.Optional;
public class OnePersonGuavaOptionalDeliveryService extend... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral-2/src/test/java/com/baeldung/nullconversion/service/MockOnePersonDeliveryServiceBase.java | patterns-modules/design-patterns-behavioral-2/src/test/java/com/baeldung/nullconversion/service/MockOnePersonDeliveryServiceBase.java | package com.baeldung.nullconversion.service;
import com.baeldung.nullconversion.Address;
import com.baeldung.nullconversion.Delivery;
import com.baeldung.nullconversion.DeliveryService;
import com.baeldung.nullconversion.Person;
import com.baeldung.nullconversion.ZipCode;
import java.util.Optional;
public abstract cl... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/fluentinterface/LargeHtmlDocument.java | patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/fluentinterface/LargeHtmlDocument.java | package com.baeldung.fluentinterface;
import com.baeldung.fluentinterface.components.HtmlElement;
import com.baeldung.fluentinterface.components.HtmlHeader;
import com.baeldung.fluentinterface.components.HtmlList;
import static java.lang.String.format;
import static java.util.Arrays.stream;
import static java.util.st... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/fluentinterface/User.java | patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/fluentinterface/User.java | package com.baeldung.fluentinterface;
public class User {
private String firstName;
private String lastName;
private String email;
private String username;
private Long id;
public String name() {
return firstName + " " + lastName;
}
public User(String firstName, String lastName, String email, String userna... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/fluentinterface/HtmlDocument.java | patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/fluentinterface/HtmlDocument.java | package com.baeldung.fluentinterface;
import static java.util.Arrays.stream;
import static java.util.stream.Collectors.joining;
public class HtmlDocument {
private final String content;
private HtmlDocument(String html) {
this.content = html;
}
public HtmlDocument() {
this("");
}
public String html() {
... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/fluentinterface/components/HtmlList.java | patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/fluentinterface/components/HtmlList.java | package com.baeldung.fluentinterface.components;
import java.util.Arrays;
import java.util.List;
import static java.lang.String.format;
import static java.util.stream.Collectors.joining;
public class HtmlList implements HtmlElement {
private final Type type;
private final List<String> items;
public HtmlList(Typ... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/fluentinterface/components/HorizontalLine.java | patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/fluentinterface/components/HorizontalLine.java | package com.baeldung.fluentinterface.components;
public class HorizontalLine implements HtmlElement {
@Override
public String html() {
return "<hr>";
}
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/fluentinterface/components/HtmlDiv.java | patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/fluentinterface/components/HtmlDiv.java | package com.baeldung.fluentinterface.components;
public class HtmlDiv implements HtmlElement {
private final String content;
public HtmlDiv(String content) {
this.content = content;
}
public HtmlDiv() {
this.content = "";
}
public HtmlDiv append(HtmlElement element) {
return new HtmlDiv(content + eleme... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/fluentinterface/components/HtmlHeader.java | patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/fluentinterface/components/HtmlHeader.java | package com.baeldung.fluentinterface.components;
public class HtmlHeader implements HtmlElement {
private final Type type;
private final String value;
public HtmlHeader(Type type, String value) {
this.type = type;
this.value = value;
}
@Override
public String html() {
return String.format("<%s>%s</%s>",... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/fluentinterface/components/HtmlSpan.java | patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/fluentinterface/components/HtmlSpan.java | package com.baeldung.fluentinterface.components;
public class HtmlSpan implements HtmlElement {
private final String content;
public HtmlSpan(String content) {
this.content = content;
}
public HtmlSpan() {
this.content = "";
}
public HtmlSpan append(HtmlElement element) {
return new HtmlSpan(content + ... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/fluentinterface/components/HtmlElement.java | patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/fluentinterface/components/HtmlElement.java | package com.baeldung.fluentinterface.components;
public interface HtmlElement {
String html();
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/nullobject/SmsRouter.java | patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/nullobject/SmsRouter.java | package com.baeldung.nullobject;
public class SmsRouter implements Router {
@Override
public void route(Message msg) {
System.out.println("Routing to a SMS gateway. Msg: " + msg);
}
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/nullobject/RouterFactory.java | patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/nullobject/RouterFactory.java | package com.baeldung.nullobject;
public class RouterFactory {
public static Router getRouterForMessage(Message msg) {
if (msg.getPriority() == null) {
return new NullRouter();
}
switch (msg.getPriority()) {
case "high":
return new SmsRouter();
... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/nullobject/NullRouter.java | patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/nullobject/NullRouter.java | package com.baeldung.nullobject;
public class NullRouter implements Router {
@Override
public void route(Message msg) {
// do nothing
}
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/nullobject/JmsRouter.java | patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/nullobject/JmsRouter.java | package com.baeldung.nullobject;
public class JmsRouter implements Router {
@Override
public void route(Message msg) {
System.out.println("Routing to a JMS queue. Msg: " + msg);
}
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/nullobject/Router.java | patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/nullobject/Router.java | package com.baeldung.nullobject;
public interface Router {
void route(Message msg);
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/nullobject/Message.java | patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/nullobject/Message.java | package com.baeldung.nullobject;
public class Message {
private String body;
private String priority;
public Message(String body, String priority) {
this.body = body;
this.priority = priority;
}
public String getPriority() {
return priority;
}
@Override
publ... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/nullobject/RoutingHandler.java | patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/nullobject/RoutingHandler.java | package com.baeldung.nullobject;
import java.util.Arrays;
import java.util.List;
public class RoutingHandler {
public void handle(Iterable<Message> messages){
for (Message msg : messages) {
Router router = RouterFactory.getRouterForMessage(msg);
router.route(msg);
}
}
... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/mediator/Button.java | patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/mediator/Button.java | package com.baeldung.mediator;
public class Button {
private Mediator mediator;
public void setMediator(Mediator mediator) {
this.mediator = mediator;
}
public void press() {
this.mediator.press();
}
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/mediator/PowerSupplier.java | patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/mediator/PowerSupplier.java | package com.baeldung.mediator;
public class PowerSupplier {
public void turnOn() {
// implementation
}
public void turnOff() {
// implementation
}
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/mediator/Mediator.java | patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/mediator/Mediator.java | package com.baeldung.mediator;
public class Mediator {
private Button button;
private Fan fan;
private PowerSupplier powerSupplier;
public void setButton(Button button) {
this.button = button;
this.button.setMediator(this);
}
public void setFan(Fan fan) {
this.fan = fa... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/mediator/Fan.java | patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/mediator/Fan.java | package com.baeldung.mediator;
public class Fan {
private Mediator mediator;
private boolean isOn = false;
public void setMediator(Mediator mediator) {
this.mediator = mediator;
}
public boolean isOn() {
return isOn;
}
public void turnOn() {
this.mediator.start();... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/smartbatching/MicroBatcher.java | patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/smartbatching/MicroBatcher.java | package com.baeldung.smartbatching;
import java.util.ArrayList;
import java.util.List;
import java.util.Queue;
import java.util.concurrent.ConcurrentLinkedQueue;
import java.util.function.Consumer;
/**
* @author KPentaris
* @date 07/06/2023
* @project design-patterns-behavioral-2
*/
public class MicroBatcher {
... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/smartbatching/BatchingApp.java | patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/smartbatching/BatchingApp.java | package com.baeldung.smartbatching;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.StandardOpenOption;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
im... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/smartbatching/SmartBatcher.java | patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/smartbatching/SmartBatcher.java | package com.baeldung.smartbatching;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.function.Consumer;
/**
* @author KPentaris
* @date 07/06/2023
* @project design-patterns-behavioral-2
*/
public class ... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/memento/TextEditor.java | patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/memento/TextEditor.java | package com.baeldung.memento;
public class TextEditor {
private TextWindow textWindow;
private TextWindowState savedTextWindow;
public TextEditor(TextWindow textWindow) {
this.textWindow = textWindow;
}
public void write(String text) {
textWindow.addText(text);
}
public ... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/memento/TextWindow.java | patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/memento/TextWindow.java | package com.baeldung.memento;
public class TextWindow {
private StringBuilder currentText;
public TextWindow() {
this.currentText = new StringBuilder();
}
public String getCurrentText() {
return currentText.toString();
}
public void addText(String text) {
currentText... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/memento/TextWindowState.java | patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/memento/TextWindowState.java | package com.baeldung.memento;
public class TextWindowState {
private String text;
public TextWindowState(String text) {
this.text = text;
}
public String getText() {
return text;
}
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/templatemethod/model/ComputerBuilder.java | patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/templatemethod/model/ComputerBuilder.java | package com.baeldung.templatemethod.model;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
public abstract class ComputerBuilder {
protected Map<String, String> computerParts = new HashMap<>();
protected List<String> motherboardSetupStatus = new ArrayList<>(... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/templatemethod/model/HighEndComputerBuilder.java | patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/templatemethod/model/HighEndComputerBuilder.java | package com.baeldung.templatemethod.model;
import lombok.extern.slf4j.Slf4j;
@Slf4j
public class HighEndComputerBuilder extends ComputerBuilder {
@Override
public void addMotherboard() {
computerParts.put("Motherboard", "High-end Motherboard");
}
@Override
public void setupMotherboar... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/templatemethod/model/HighEndComputer.java | patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/templatemethod/model/HighEndComputer.java | package com.baeldung.templatemethod.model;
import java.util.Map;
public class HighEndComputer extends Computer {
public HighEndComputer(Map<String, String> computerParts) {
super(computerParts);
}
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/templatemethod/model/StandardComputer.java | patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/templatemethod/model/StandardComputer.java | package com.baeldung.templatemethod.model;
import java.util.Map;
public class StandardComputer extends Computer {
public StandardComputer(Map<String, String> computerParts) {
super(computerParts);
}
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/templatemethod/model/Computer.java | patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/templatemethod/model/Computer.java | package com.baeldung.templatemethod.model;
import java.util.HashMap;
import java.util.Map;
public class Computer {
private Map<String, String> computerParts = new HashMap<>();
public Computer(Map<String, String> computerParts) {
this.computerParts = computerParts;
}
public Map<S... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/templatemethod/model/StandardComputerBuilder.java | patterns-modules/design-patterns-behavioral-2/src/main/java/com/baeldung/templatemethod/model/StandardComputerBuilder.java | package com.baeldung.templatemethod.model;
import lombok.extern.slf4j.Slf4j;
@Slf4j
public class StandardComputerBuilder extends ComputerBuilder {
@Override
public void addMotherboard() {
computerParts.put("Motherboard", "Standard Motherboard");
}
@Override
public void setupMotherboa... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
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