摘要:
public interface HelloWorld{ void sayHello(String name); } public HelloWorldImpl implements HelloWorld{ @Override public void sayHello(String name) { 阅读全文
摘要:
策略模式: //鸭子 public interface Duck{public void sound(); public void move(); } //小红鸭 public class redDuck extends Duck{ public void sound(){system.out.pr 阅读全文