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/spring-ai-modules/spring-ai-multiple-llms/src/test/java/com/baeldung/multillm/ChatbotServiceLiveTest.java | spring-ai-modules/spring-ai-multiple-llms/src/test/java/com/baeldung/multillm/ChatbotServiceLiveTest.java | package com.baeldung.multillm;
import org.junit.jupiter.api.Nested;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.condition.EnabledIfEnvironmentVariable;
import org.junit.jupiter.api.condition.EnabledIfEnvironmentVariables;
import org.junit.jupiter.api.extension.ExtendWith;
import org.junitpioneer.ju... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/spring-ai-modules/spring-ai-multiple-llms/src/main/java/com/baeldung/multillm/ChatbotConfiguration.java | spring-ai-modules/spring-ai-multiple-llms/src/main/java/com/baeldung/multillm/ChatbotConfiguration.java | package com.baeldung.multillm;
import org.springframework.ai.anthropic.AnthropicChatModel;
import org.springframework.ai.anthropic.AnthropicChatOptions;
import org.springframework.ai.anthropic.api.AnthropicApi;
import org.springframework.ai.chat.client.ChatClient;
import org.springframework.ai.chat.model.ChatModel;
im... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/spring-ai-modules/spring-ai-multiple-llms/src/main/java/com/baeldung/multillm/ChatbotService.java | spring-ai-modules/spring-ai-multiple-llms/src/main/java/com/baeldung/multillm/ChatbotService.java | package com.baeldung.multillm;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.ai.chat.client.ChatClient;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.retry.annotation.Recover;
import org.springframework.retry.annotation.Retryable;
import... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/spring-ai-modules/spring-ai-multiple-llms/src/main/java/com/baeldung/multillm/ChatbotController.java | spring-ai-modules/spring-ai-multiple-llms/src/main/java/com/baeldung/multillm/ChatbotController.java | package com.baeldung.multillm;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RestController;
@RestController
class ChatbotController {
private final ChatbotService chatbotService;
Chatbot... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/spring-ai-modules/spring-ai-multiple-llms/src/main/java/com/baeldung/multillm/Application.java | spring-ai-modules/spring-ai-multiple-llms/src/main/java/com/baeldung/multillm/Application.java | package com.baeldung.multillm;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.retry.annotation.EnableRetry;
@EnableRetry
@SpringBootApplication
class Application {
public static void main(String[] args) {
... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/spring-ai-modules/spring-ai-semantic-caching/src/test/java/com/baeldung/semantic/cache/SemanticCacheLiveTest.java | spring-ai-modules/spring-ai-semantic-caching/src/test/java/com/baeldung/semantic/cache/SemanticCacheLiveTest.java | package com.baeldung.semantic.cache;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.condition.EnabledIfEnvironmentVariable;
import org.junit.jupiter.api.condition.EnabledIfEnvironmentVariables;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/spring-ai-modules/spring-ai-semantic-caching/src/main/java/com/baeldung/semantic/cache/LLMConfiguration.java | spring-ai-modules/spring-ai-semantic-caching/src/main/java/com/baeldung/semantic/cache/LLMConfiguration.java | package com.baeldung.semantic.cache;
import org.springframework.ai.embedding.EmbeddingModel;
import org.springframework.ai.vectorstore.redis.RedisVectorStore;
import org.springframework.boot.autoconfigure.data.redis.RedisProperties;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
impo... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/spring-ai-modules/spring-ai-semantic-caching/src/main/java/com/baeldung/semantic/cache/SemanticCacheProperties.java | spring-ai-modules/spring-ai-semantic-caching/src/main/java/com/baeldung/semantic/cache/SemanticCacheProperties.java | package com.baeldung.semantic.cache;
import org.springframework.boot.context.properties.ConfigurationProperties;
@ConfigurationProperties(prefix = "com.baeldung.semantic.cache")
record SemanticCacheProperties(
Double similarityThreshold,
String contentField,
String embeddingField,
String metadataField... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/spring-ai-modules/spring-ai-semantic-caching/src/main/java/com/baeldung/semantic/cache/SemanticCachingService.java | spring-ai-modules/spring-ai-semantic-caching/src/main/java/com/baeldung/semantic/cache/SemanticCachingService.java | package com.baeldung.semantic.cache;
import org.springframework.ai.document.Document;
import org.springframework.ai.vectorstore.SearchRequest;
import org.springframework.ai.vectorstore.VectorStore;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.stereotype.S... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/spring-ai-modules/spring-ai-semantic-caching/src/main/java/com/baeldung/semantic/cache/Application.java | spring-ai-modules/spring-ai-semantic-caching/src/main/java/com/baeldung/semantic/cache/Application.java | package com.baeldung.semantic.cache;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
} | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/disruptor/src/test/java/com/baeldung/disruptor/DisruptorIntegrationTest.java | disruptor/src/test/java/com/baeldung/disruptor/DisruptorIntegrationTest.java | package com.baeldung.disruptor;
import com.lmax.disruptor.BusySpinWaitStrategy;
import com.lmax.disruptor.RingBuffer;
import com.lmax.disruptor.WaitStrategy;
import com.lmax.disruptor.dsl.Disruptor;
import com.lmax.disruptor.dsl.ProducerType;
import com.lmax.disruptor.util.DaemonThreadFactory;
import org.junit.Before;... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/disruptor/src/test/java/com/baeldung/disruptor/SingleEventConsumer.java | disruptor/src/test/java/com/baeldung/disruptor/SingleEventConsumer.java | package com.baeldung.disruptor;
import static org.junit.Assert.assertEquals;
import com.lmax.disruptor.EventHandler;
public class SingleEventConsumer implements EventConsumer {
private int expectedValue = -1;
@Override
@SuppressWarnings("unchecked")
public EventHandler<ValueEvent>[] getEventHandler... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/disruptor/src/test/java/com/baeldung/disruptor/MultiEventConsumer.java | disruptor/src/test/java/com/baeldung/disruptor/MultiEventConsumer.java | package com.baeldung.disruptor;
import static org.junit.Assert.assertEquals;
import com.lmax.disruptor.EventHandler;
public class MultiEventConsumer implements EventConsumer {
private int expectedValue = -1;
private int otherExpectedValue = -1;
@Override
@SuppressWarnings("unchecked")
public Ev... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/disruptor/src/main/java/com/baeldung/disruptor/EventConsumer.java | disruptor/src/main/java/com/baeldung/disruptor/EventConsumer.java | package com.baeldung.disruptor;
import com.lmax.disruptor.EventHandler;
/**
* Consumer that consumes event from ring buffer.
*/
public interface EventConsumer {
/**
* One or more event handler to handle event from ring buffer.
*/
public EventHandler<ValueEvent>[] getEventHandler();
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/disruptor/src/main/java/com/baeldung/disruptor/MultiEventPrintConsumer.java | disruptor/src/main/java/com/baeldung/disruptor/MultiEventPrintConsumer.java | package com.baeldung.disruptor;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.lmax.disruptor.EventHandler;
public class MultiEventPrintConsumer implements EventConsumer {
private final Logger logger = LoggerFactory.getLogger(this.getClass());
@Override
@SuppressWarnings("unchecked... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/disruptor/src/main/java/com/baeldung/disruptor/EventProducer.java | disruptor/src/main/java/com/baeldung/disruptor/EventProducer.java | package com.baeldung.disruptor;
import com.lmax.disruptor.RingBuffer;
/**
* Producer that produces event for ring buffer.
*/
public interface EventProducer {
/**
* Start the producer that would start producing the values.
* @param ringBuffer
* @param count
*/
public void startProducing(f... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/disruptor/src/main/java/com/baeldung/disruptor/ValueEvent.java | disruptor/src/main/java/com/baeldung/disruptor/ValueEvent.java | package com.baeldung.disruptor;
import org.apache.commons.lang3.builder.ToStringBuilder;
import com.lmax.disruptor.EventFactory;
public final class ValueEvent {
private int value;
public int getValue() {
return value;
}
public void setValue(int value) {
this.value = value;
}
... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/disruptor/src/main/java/com/baeldung/disruptor/SingleEventProducer.java | disruptor/src/main/java/com/baeldung/disruptor/SingleEventProducer.java | package com.baeldung.disruptor;
import com.lmax.disruptor.RingBuffer;
public class SingleEventProducer implements EventProducer {
@Override
public void startProducing(RingBuffer<ValueEvent> ringBuffer, int count) {
final Runnable producer = () -> produce(ringBuffer, count);
new Thread(produce... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/disruptor/src/main/java/com/baeldung/disruptor/DelayedMultiEventProducer.java | disruptor/src/main/java/com/baeldung/disruptor/DelayedMultiEventProducer.java | package com.baeldung.disruptor;
import com.lmax.disruptor.RingBuffer;
public class DelayedMultiEventProducer implements EventProducer {
@Override
public void startProducing(final RingBuffer<ValueEvent> ringBuffer, final int count) {
final Runnable simpleProducer = () -> produce(ringBuffer, count, fal... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/disruptor/src/main/java/com/baeldung/disruptor/SingleEventPrintConsumer.java | disruptor/src/main/java/com/baeldung/disruptor/SingleEventPrintConsumer.java | package com.baeldung.disruptor;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.lmax.disruptor.EventHandler;
public class SingleEventPrintConsumer implements EventConsumer {
private final Logger logger = LoggerFactory.getLogger(this.getClass());
@Override
@SuppressWarnings("unchecke... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/idd/src/test/java/com/baeldung/idd/HelpRequestServiceUnitTest.java | patterns-modules/idd/src/test/java/com/baeldung/idd/HelpRequestServiceUnitTest.java | package com.baeldung.idd;
import org.assertj.core.api.Assertions;
import org.junit.jupiter.api.Test;
import java.util.List;
public class HelpRequestServiceUnitTest {
HelpRequestService testHelpRequestService = new HelpRequestService() {
@Override
public HelpRequestDTO createHelpRequest(CreateHel... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/idd/src/main/java/com/baeldung/idd/HelpRequestStatus.java | patterns-modules/idd/src/main/java/com/baeldung/idd/HelpRequestStatus.java | package com.baeldung.idd;
public enum HelpRequestStatus {
OPEN, IN_PROGRESS, CLOSED
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/idd/src/main/java/com/baeldung/idd/HelpRequestDTO.java | patterns-modules/idd/src/main/java/com/baeldung/idd/HelpRequestDTO.java | package com.baeldung.idd;
public class HelpRequestDTO {
private HelpRequestStatus status;
public HelpRequestStatus getStatus() {
return status;
}
public HelpRequestDTO(HelpRequestStatus status) {
this.status = status;
}
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/idd/src/main/java/com/baeldung/idd/HelpRequestService.java | patterns-modules/idd/src/main/java/com/baeldung/idd/HelpRequestService.java | package com.baeldung.idd;
import java.util.List;
public interface HelpRequestService {
HelpRequestDTO createHelpRequest(CreateHelpRequestDTO createHelpRequestDTO);
List<HelpRequestDTO> findAllByStatus(HelpRequestStatus status);
HelpRequestDTO updateHelpRequest(UpdateHelpRequestDTO updateHelpRequestDTO);... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/idd/src/main/java/com/baeldung/idd/HelpRequestServiceImpl.java | patterns-modules/idd/src/main/java/com/baeldung/idd/HelpRequestServiceImpl.java | package com.baeldung.idd;
import java.util.List;
public class HelpRequestServiceImpl implements HelpRequestService {
@Override
public HelpRequestDTO createHelpRequest(CreateHelpRequestDTO createHelpRequestDTO) {
// here goes the implementation
return new HelpRequestDTO(createHelpRequestDTO.ge... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/idd/src/main/java/com/baeldung/idd/UpdateHelpRequestDTO.java | patterns-modules/idd/src/main/java/com/baeldung/idd/UpdateHelpRequestDTO.java | package com.baeldung.idd;
public class UpdateHelpRequestDTO {
private final HelpRequestStatus status;
public UpdateHelpRequestDTO(HelpRequestStatus status) {
this.status = status;
}
public HelpRequestStatus getStatus() {
return status;
}
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/idd/src/main/java/com/baeldung/idd/CreateHelpRequestDTO.java | patterns-modules/idd/src/main/java/com/baeldung/idd/CreateHelpRequestDTO.java | package com.baeldung.idd;
public class CreateHelpRequestDTO {
private final HelpRequestStatus status;
public CreateHelpRequestDTO(HelpRequestStatus status) {
this.status = status;
}
public HelpRequestStatus getStatus() {
return status;
}
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/test/java/com/baeldung/singleton/synchronization/SingletonSynchronizationIntegrationTest.java | patterns-modules/design-patterns-creational/src/test/java/com/baeldung/singleton/synchronization/SingletonSynchronizationIntegrationTest.java | package com.baeldung.singleton.synchronization;
import java.util.Collections;
import java.util.HashSet;
import java.util.Set;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import org.junit.Assert;
import org.junit.Test;
/**
* Unit tests for the singleton synchronization package... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/test/java/com/baeldung/reduceIfelse/RuleEngineUnitTest.java | patterns-modules/design-patterns-creational/src/test/java/com/baeldung/reduceIfelse/RuleEngineUnitTest.java | package com.baeldung.reduceIfelse;
import com.baeldung.reducingIfElse.Expression;
import com.baeldung.reducingIfElse.Operator;
import com.baeldung.reducingIfElse.Result;
import com.baeldung.reducingIfElse.RuleEngine;
import org.junit.Test;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.as... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/test/java/com/baeldung/reduceIfelse/CalculatorUnitTest.java | patterns-modules/design-patterns-creational/src/test/java/com/baeldung/reduceIfelse/CalculatorUnitTest.java | package com.baeldung.reduceIfelse;
import com.baeldung.reducingIfElse.AddCommand;
import com.baeldung.reducingIfElse.Calculator;
import com.baeldung.reducingIfElse.Operator;
import org.junit.Test;
import static org.junit.Assert.assertEquals;
public class CalculatorUnitTest {
@Test
public void whenCalculateU... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/test/java/com/baeldung/factorypattern/method/FactoryMethodUnitTest.java | patterns-modules/design-patterns-creational/src/test/java/com/baeldung/factorypattern/method/FactoryMethodUnitTest.java | package com.baeldung.factorypattern.method;
import static org.assertj.core.api.Assertions.assertThat;
import org.junit.jupiter.api.Test;
class FactoryMethodUnitTest {
@Test
public void givenCarFactory_whenCreateMotorVehicle_thenInstanceOf() {
MotorVehicleFactory factory = new CarFactory();
Mo... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/test/java/com/baeldung/factorypattern/abstract_factory/AbstractFactoryUnitTest.java | patterns-modules/design-patterns-creational/src/test/java/com/baeldung/factorypattern/abstract_factory/AbstractFactoryUnitTest.java | package com.baeldung.factorypattern.abstract_factory;
import static org.assertj.core.api.Assertions.assertThat;
import org.junit.jupiter.api.Test;
class AbstractFactoryUnitTest {
@Test
public void givenFutureVehicleFactory_whenCreateMotorVehicle_thenInstanceOf() {
Corporation corporation = new Future... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/test/java/com/baeldung/creational/builder/BuilderPatternIntegrationTest.java | patterns-modules/design-patterns-creational/src/test/java/com/baeldung/creational/builder/BuilderPatternIntegrationTest.java | package com.baeldung.creational.builder;
import static org.junit.Assert.assertEquals;
import org.junit.Test;
public class BuilderPatternIntegrationTest {
@Test
public void whenCreatingObjectThroughBuilder_thenObjectValid() {
BankAccount newAccount = new BankAccount
.BankAccountBuilder("Jon"... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/test/java/com/baeldung/creational/singleton/SingletonIntegrationTest.java | patterns-modules/design-patterns-creational/src/test/java/com/baeldung/creational/singleton/SingletonIntegrationTest.java | package com.baeldung.creational.singleton;
import org.junit.Test;
import static org.junit.Assert.*;
public class SingletonIntegrationTest {
@Test
/**
* Although there is absolutely no way to determine whether
* a class is Singleton, in this test case, we will just
* check for two objects if t... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/test/java/com/baeldung/creational/abstractfactory/AbstractPatternIntegrationTest.java | patterns-modules/design-patterns-creational/src/test/java/com/baeldung/creational/abstractfactory/AbstractPatternIntegrationTest.java | package com.baeldung.creational.abstractfactory;
import static org.junit.Assert.*;
import org.junit.Test;
public class AbstractPatternIntegrationTest {
@Test
public void givenAbstractFactory_whenGettingObjects_thenSuccessful() {
AbstractFactory abstractFactory;
//creating a brown toy... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/test/java/com/baeldung/creational/factory/FactoryIntegrationTest.java | patterns-modules/design-patterns-creational/src/test/java/com/baeldung/creational/factory/FactoryIntegrationTest.java | package com.baeldung.creational.factory;
import static org.junit.Assert.*;
import org.junit.Test;
public class FactoryIntegrationTest {
@Test
public void whenUsingFactoryForSquare_thenCorrectObjectReturned() {
Polygon p;
PolygonFactory factory = new PolygonFactory();
//get t... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/singleton/ClassSingleton.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/singleton/ClassSingleton.java | package com.baeldung.singleton;
public class ClassSingleton {
private static ClassSingleton INSTANCE;
private String info = "Initial class info";
private ClassSingleton(){
}
public static ClassSingleton getInstance(){
if(INSTANCE == null){
INSTANCE = new Class... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/singleton/Sandbox.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/singleton/Sandbox.java | package com.baeldung.singleton;
public class Sandbox {
public static void main(String[] args) {
//Class singleton
ClassSingleton classSingleton1 = ClassSingleton.getInstance();
//OurSingleton object1 = new OurSingleton(); // The constructor OurSingleton() is not visible
... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/singleton/EnumSingleton.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/singleton/EnumSingleton.java | package com.baeldung.singleton;
public enum EnumSingleton {
INSTANCE("Initial enum info"); //Name of the single instance
private String info;
private EnumSingleton(String info) {
this.info = info;
}
public EnumSingleton getInstance(){
return INSTANCE;
}
... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/singleton/synchronization/EarlyInitSingleton.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/singleton/synchronization/EarlyInitSingleton.java | package com.baeldung.singleton.synchronization;
/**
* Singleton with early initialization. Inlines the singleton instance
* initialization.
*
* @author Donato Rimenti
*
*/
public class EarlyInitSingleton {
/**
* Current instance of the singleton.
*/
private static final EarlyInitSingleton INSTANCE = new ... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/singleton/synchronization/InitOnDemandSingleton.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/singleton/synchronization/InitOnDemandSingleton.java | package com.baeldung.singleton.synchronization;
/**
* Initialization on demand singleton pattern. Uses a nested static class to
* hold a reference to the singleton instance.
*
* @author Donato Rimenti
*
*/
public class InitOnDemandSingleton {
/**
* Holder for a singleton instance.
*
* @author Donato Ri... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/singleton/synchronization/DclSingleton.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/singleton/synchronization/DclSingleton.java | package com.baeldung.singleton.synchronization;
/**
* Double-checked locking design pattern applied to a singleton.
*
* @author Donato Rimenti
*
*/
public class DclSingleton {
/**
* Current instance of the singleton.
*/
private static volatile DclSingleton instance;
/**
* Private constructor to avoid ... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/singleton/synchronization/DraconianSingleton.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/singleton/synchronization/DraconianSingleton.java | package com.baeldung.singleton.synchronization;
/**
* Draconian singleton. The method to get the instance is synchronized.
*
* @author Donato Rimenti
*
*/
public class DraconianSingleton {
/**
* Current instance of the singleton.
*/
private static DraconianSingleton instance;
/**
* Private constructor... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/singleton/synchronization/EnumSingleton.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/singleton/synchronization/EnumSingleton.java | package com.baeldung.singleton.synchronization;
/**
* Enum singleton pattern. Uses an enum to hold a reference to the singleton
* instance.
*
* @author Donato Rimenti
*
*/
public enum EnumSingleton {
/**
* Current instance of the singleton.
*/
INSTANCE;
} | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/factorypattern/method/Motorcycle.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/factorypattern/method/Motorcycle.java | package com.baeldung.factorypattern.method;
public class Motorcycle implements MotorVehicle {
@Override
public void build() {
System.out.println("Build Motorcycle");
}
} | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/factorypattern/method/MotorVehicle.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/factorypattern/method/MotorVehicle.java | package com.baeldung.factorypattern.method;
public interface MotorVehicle {
void build();
} | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/factorypattern/method/MotorcycleFactory.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/factorypattern/method/MotorcycleFactory.java | package com.baeldung.factorypattern.method;
public class MotorcycleFactory extends MotorVehicleFactory {
@Override
protected MotorVehicle createMotorVehicle() {
return new Motorcycle();
}
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/factorypattern/method/Car.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/factorypattern/method/Car.java | package com.baeldung.factorypattern.method;
public class Car implements MotorVehicle {
@Override
public void build() {
System.out.println("Build Car");
}
} | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/factorypattern/method/CarFactory.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/factorypattern/method/CarFactory.java | package com.baeldung.factorypattern.method;
public class CarFactory extends MotorVehicleFactory {
@Override
protected MotorVehicle createMotorVehicle() {
return new Car();
}
} | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/factorypattern/method/MotorVehicleFactory.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/factorypattern/method/MotorVehicleFactory.java | package com.baeldung.factorypattern.method;
public abstract class MotorVehicleFactory {
public MotorVehicle create() {
MotorVehicle vehicle = createMotorVehicle();
vehicle.build();
return vehicle;
}
protected abstract MotorVehicle createMotorVehicle();
} | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/factorypattern/abstract_factory/Corporation.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/factorypattern/abstract_factory/Corporation.java | package com.baeldung.factorypattern.abstract_factory;
public abstract class Corporation {
public abstract MotorVehicle createMotorVehicle();
public abstract ElectricVehicle createElectricVehicle();
} | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/factorypattern/abstract_factory/NextGenElectricCar.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/factorypattern/abstract_factory/NextGenElectricCar.java | package com.baeldung.factorypattern.abstract_factory;
public class NextGenElectricCar implements ElectricVehicle {
@Override
public void build() {
System.out.println("NextGen Electric Car");
}
} | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/factorypattern/abstract_factory/NextGenCorporation.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/factorypattern/abstract_factory/NextGenCorporation.java | package com.baeldung.factorypattern.abstract_factory;
public class NextGenCorporation extends Corporation {
@Override
public MotorVehicle createMotorVehicle() {
return new NextGenMotorcycle();
}
@Override
public ElectricVehicle createElectricVehicle() {
return new NextGenElectricCa... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/factorypattern/abstract_factory/NextGenMotorcycle.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/factorypattern/abstract_factory/NextGenMotorcycle.java | package com.baeldung.factorypattern.abstract_factory;
public class NextGenMotorcycle implements MotorVehicle {
@Override
public void build() {
System.out.println("NextGen Motorcycle");
}
} | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/factorypattern/abstract_factory/MotorVehicle.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/factorypattern/abstract_factory/MotorVehicle.java | package com.baeldung.factorypattern.abstract_factory;
public interface MotorVehicle {
void build();
} | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/factorypattern/abstract_factory/FutureVehicleElectricCar.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/factorypattern/abstract_factory/FutureVehicleElectricCar.java | package com.baeldung.factorypattern.abstract_factory;
public class FutureVehicleElectricCar implements ElectricVehicle {
@Override
public void build() {
System.out.println("Future Vehicle Electric Car");
}
} | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/factorypattern/abstract_factory/FutureVehicleMotorcycle.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/factorypattern/abstract_factory/FutureVehicleMotorcycle.java | package com.baeldung.factorypattern.abstract_factory;
public class FutureVehicleMotorcycle implements MotorVehicle {
@Override
public void build() {
System.out.println("Future Vehicle Motorcycle");
}
} | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/factorypattern/abstract_factory/FutureVehicleCorporation.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/factorypattern/abstract_factory/FutureVehicleCorporation.java | package com.baeldung.factorypattern.abstract_factory;
public class FutureVehicleCorporation extends Corporation {
@Override
public MotorVehicle createMotorVehicle() {
return new FutureVehicleMotorcycle();
}
@Override
public ElectricVehicle createElectricVehicle() {
return new Futur... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/factorypattern/abstract_factory/ElectricVehicle.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/factorypattern/abstract_factory/ElectricVehicle.java | package com.baeldung.factorypattern.abstract_factory;
public interface ElectricVehicle {
void build();
} | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/reducingIfElse/Addition.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/reducingIfElse/Addition.java | package com.baeldung.reducingIfElse;
public class Addition implements Operation {
@Override
public int apply(int a, int b) {
return a + b;
}
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/reducingIfElse/Multiplication.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/reducingIfElse/Multiplication.java | package com.baeldung.reducingIfElse;
public class Multiplication implements Operation {
@Override public int apply(int a, int b) {
return 0;
}
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/reducingIfElse/AddCommand.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/reducingIfElse/AddCommand.java | package com.baeldung.reducingIfElse;
public class AddCommand implements Command {
private int a;
private int b;
public AddCommand(int a, int b) {
this.a = a;
this.b = b;
}
@Override
public Integer execute() {
return a + b;
}
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/reducingIfElse/OperatorFactory.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/reducingIfElse/OperatorFactory.java | package com.baeldung.reducingIfElse;
import java.util.HashMap;
import java.util.Map;
import java.util.Optional;
public class OperatorFactory {
static Map<String, Operation> operationMap = new HashMap<>();
static {
operationMap.put("add", new Addition());
operationMap.put("divide", new Divisio... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/reducingIfElse/Division.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/reducingIfElse/Division.java | package com.baeldung.reducingIfElse;
public class Division implements Operation {
@Override public int apply(int a, int b) {
return a / b;
}
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/reducingIfElse/Result.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/reducingIfElse/Result.java | package com.baeldung.reducingIfElse;
public class Result {
int value;
public Result(int value) {
this.value = value;
}
public int getValue() {
return value;
}
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/reducingIfElse/Operator.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/reducingIfElse/Operator.java | package com.baeldung.reducingIfElse;
public enum Operator {
ADD {
@Override
public int apply(int a, int b) {
return a + b;
}
},
MULTIPLY {
@Override
public int apply(int a, int b) {
return a * b;
}
},
SUBTRACT {
@Ove... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/reducingIfElse/Expression.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/reducingIfElse/Expression.java | package com.baeldung.reducingIfElse;
public class Expression {
private Integer x;
private Integer y;
private Operator operator;
public Expression(Integer x, Integer y, Operator operator) {
this.x = x;
this.y = y;
this.operator = operator... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/reducingIfElse/Rule.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/reducingIfElse/Rule.java | package com.baeldung.reducingIfElse;
public interface Rule {
boolean evaluate(Expression expression);
Result getResult();
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/reducingIfElse/AddRule.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/reducingIfElse/AddRule.java | package com.baeldung.reducingIfElse;
public class AddRule implements Rule {
private int result;
@Override
public boolean evaluate(Expression expression) {
boolean evalResult = false;
if (expression.getOperator() == Operator.ADD) {
this.result = expression.getX() + expression.g... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/reducingIfElse/Operation.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/reducingIfElse/Operation.java | package com.baeldung.reducingIfElse;
public interface Operation {
int apply(int a, int b);
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/reducingIfElse/Modulo.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/reducingIfElse/Modulo.java | package com.baeldung.reducingIfElse;
public class Modulo implements Operation {
@Override public int apply(int a, int b) {
return a % b;
}
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/reducingIfElse/Subtraction.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/reducingIfElse/Subtraction.java | package com.baeldung.reducingIfElse;
public class Subtraction implements Operation {
@Override public int apply(int a, int b) {
return a - b;
}
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/reducingIfElse/Calculator.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/reducingIfElse/Calculator.java | package com.baeldung.reducingIfElse;
public class Calculator {
public int calculate(int a, int b, String operator) {
int result = Integer.MIN_VALUE;
if ("add".equals(operator)) {
result = a + b;
} else if ("multiply".equals(operator)) {
result = a * b;
} el... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/reducingIfElse/Command.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/reducingIfElse/Command.java | package com.baeldung.reducingIfElse;
public interface Command {
Integer execute();
} | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/reducingIfElse/RuleEngine.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/reducingIfElse/RuleEngine.java | package com.baeldung.reducingIfElse;
import java.util.ArrayList;
import java.util.List;
import java.util.Optional;
import java.util.stream.Collectors;
public class RuleEngine {
private static List<Rule> rules = new ArrayList<>();
static {
rules.add(new AddRule());
}
public Result process(Ex... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/builder/BankAccount.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/builder/BankAccount.java | package com.baeldung.creational.builder;
public class BankAccount {
private String name;
private String accountNumber;
private String email;
private boolean newsletter;
//The constructor that takes a builder from which it will create object
//the access to this is only provided to builder
... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/builder/BuilderPatternDriver.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/builder/BuilderPatternDriver.java | package com.baeldung.creational.builder;
public class BuilderPatternDriver {
public static void main(String[] args) {
BankAccount newAccount = new BankAccount
.BankAccountBuilder("Jon", "22738022275")
.withEmail("jon@example.com")
.wantNewsletter(true)
.build();
... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/singleton/Singleton.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/singleton/Singleton.java | package com.baeldung.creational.singleton;
public class Singleton {
private Singleton() {}
private static class SingletonHolder {
public static final Singleton instance = new Singleton();
}
public static Singleton getInstance() {
return SingletonHolder.instance; ... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/singleton/SingletonDriver.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/singleton/SingletonDriver.java | package com.baeldung.creational.singleton;
public class SingletonDriver {
public static void main(String[] args) {
Singleton instance = Singleton.getInstance();
System.out.println(instance.toString());
}
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory/FactoryProvider.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory/FactoryProvider.java | package com.baeldung.creational.abstractfactory;
public class FactoryProvider {
public static AbstractFactory getFactory(String choice){
if("Toy".equalsIgnoreCase(choice)){
return new AnimalFactory();
}
else if("Color".equalsIgnoreCase(choice)){
return new C... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory/Dog.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory/Dog.java | package com.baeldung.creational.abstractfactory;
public class Dog implements Animal {
@Override
public String getType() {
return "Dog";
}
@Override
public String makeSound() {
return "Barks";
}
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory/Brown.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory/Brown.java | package com.baeldung.creational.abstractfactory;
public class Brown implements Color {
@Override
public String getColor() {
return "brown";
}
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory/Animal.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory/Animal.java | package com.baeldung.creational.abstractfactory;
public interface Animal {
String getType();
String makeSound();
} | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory/White.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory/White.java | package com.baeldung.creational.abstractfactory;
public class White implements Color {
@Override
public String getColor() {
return "White";
}
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory/Color.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory/Color.java | package com.baeldung.creational.abstractfactory;
public interface Color {
String getColor();
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory/AbstractPatternDriver.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory/AbstractPatternDriver.java | package com.baeldung.creational.abstractfactory;
public class AbstractPatternDriver {
public static void main(String[] args) {
AbstractFactory abstractFactory;
//creating a brown toy dog
abstractFactory = FactoryProvider.getFactory("Toy");
Animal toy =(Animal) abstractFacto... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory/AnimalFactory.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory/AnimalFactory.java | package com.baeldung.creational.abstractfactory;
public class AnimalFactory implements AbstractFactory<Animal> {
@Override
public Animal create(String animalType) {
if ("Dog".equalsIgnoreCase(animalType)) {
return new Dog();
} else if ("Duck".equalsIgnoreCase(animalType)) {
... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory/Duck.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory/Duck.java | package com.baeldung.creational.abstractfactory;
public class Duck implements Animal {
@Override
public String getType() {
return "Duck";
}
@Override
public String makeSound() {
return "Squeks";
}
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory/AbstractFactory.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory/AbstractFactory.java | package com.baeldung.creational.abstractfactory;
public interface AbstractFactory<T> {
T create(String type) ;
} | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory/ColorFactory.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory/ColorFactory.java | package com.baeldung.creational.abstractfactory;
public class ColorFactory implements AbstractFactory<Color> {
@Override
public Color create(String colorType) {
if ("Brown".equalsIgnoreCase(colorType)) {
return new Brown();
} else if ("White".equalsIgnoreCase(colorType)) {
... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/factory/Triangle.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/factory/Triangle.java | package com.baeldung.creational.factory;
public class Triangle implements Polygon {
@Override
public String getType() {
return "Triangle";
}
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/factory/Pentagon.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/factory/Pentagon.java | package com.baeldung.creational.factory;
public class Pentagon implements Polygon {
@Override
public String getType() {
return "Pentagon";
}
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/factory/Square.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/factory/Square.java | package com.baeldung.creational.factory;
public class Square implements Polygon {
@Override
public String getType() {
return "Square";
}
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/factory/Heptagon.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/factory/Heptagon.java | package com.baeldung.creational.factory;
public class Heptagon implements Polygon {
@Override
public String getType() {
return "Heptagon";
}
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/factory/PolygonFactory.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/factory/PolygonFactory.java | package com.baeldung.creational.factory;
public class PolygonFactory {
public Polygon getPolygon(int numberOfSides) {
if(numberOfSides == 3) {
return new Triangle();
}
if(numberOfSides == 4) {
return new Square();
}
if(numberOfSides == 5) {
... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/factory/Polygon.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/factory/Polygon.java | package com.baeldung.creational.factory;
public interface Polygon {
String getType();
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/factory/FactoryDriver.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/factory/FactoryDriver.java | package com.baeldung.creational.factory;
public class FactoryDriver {
public static void main(String[] args) {
Polygon p;
PolygonFactory factory = new PolygonFactory();
//get the shape which has 4 sides
p = factory.getPolygon(4);
System.out.println("The shape with 4... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/factory/Octagon.java | patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/factory/Octagon.java | package com.baeldung.creational.factory;
public class Octagon implements Polygon {
@Override
public String getType() {
return "Octagon";
}
}
| java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/solid/src/main/test/com/baeldung/o/CalculatorUnitTest.java | patterns-modules/solid/src/main/test/com/baeldung/o/CalculatorUnitTest.java | package com.baeldung.o;
import static org.junit.Assert.assertEquals;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
public class CalculatorUnitTest {
private static final double RIGHT = 10.0;
private static final double LEFT = 20.0;
private static final double SUM = 30.0;
private st... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
eugenp/tutorials | https://github.com/eugenp/tutorials/blob/4463e58ffb73fe599bac2479abd84598c6e70a1a/patterns-modules/solid/src/main/java/com/baeldung/s/Book.java | patterns-modules/solid/src/main/java/com/baeldung/s/Book.java | package com.baeldung.s;
public class Book {
private String name;
private String author;
private String text;
//constructor, getters and setters
//methods that directly relate to the book properties
public String replaceWordInText(String word, String replacementWord){
return text.replaceAll(word, rep... | java | MIT | 4463e58ffb73fe599bac2479abd84598c6e70a1a | 2026-01-04T14:45:57.069771Z | false |
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