适配器模式将一个类的接口，转化成客户期望的另一个接口，适配
器让原本接口不兼容的类可以合作无间
public interface Sheep{
public void run();
public void ho();
}
public class Wolf{
public void run(){
System.out.println("狼跑");
}
public void ho(){
System.out.println("狼嚎");
}
}
public class SheepAdapter implements Sheep{
private Wolf wolf;
public SheepAdapter(Wolf wolf){
this.wolf = wolf;
}
@Override
public void run(){
wolf.run();
}
@Override
public void ho(){
wolf.ho();
}
}
测试适配器
public static void main(String[] args){
//狼
Wolf wolf = new Wolf();
//披着羊皮的狼
Sheep sheep = new SheepAdapter(wolf);
sheep.run();
sheep.ho();
}