• Singleton Pattern
• Factory Pattern
• Builder Pattern
• Prototype Pattern

• Adapter Pattern
• Bridge Pattern
• Composite Pattern
• Decorator Pattern
• Facade Pattern
• Flyweight Pattern
• Proxy Pattern

• Command Pattern
• Interpreter Pattern
• Iterator Pattern
• Mediator Pattern
• Memento Pattern
• Null Object Pattern
• Observer Pattern
• State Pattern
• Strategy Pattern
• Template Method Pattern
• Visitor Pattern

git clone https://github.com/jojozhuang/design-patterns-java.git mvn install mvn test

Open the project in IntelliJ IDEA, compile and run the JUnit test cases.