设计模式--适配器模式

Posted 2023-01-06

• 首先声明鸭子和火鸡的接口

package shipeiqi;
public interface Duck 
    public void gaga();
    public void fly();




public interface Turkey 
    public void gogo();
    public void fly();

• 实现接口

public class RedDuck implements Duck 


    @Override
    public void gaga() 
        System.out.println("Ga Ga");
    


    @Override
    public void fly() 
        System.out.println("Fly a long distance");
    



public class RedTurkey implements Turkey 
    @Override
    public void gogo() 
        System.out.println("Go Go");
    


    @Override
    public void fly() 
        System.out.println("Fly  a short distance");
    

• 实现适配器

//用户看到的是鸭子
public class TurkeyAdapter implements Duck 
    private Turkey turkey;
    public TurkeyAdapter(Turkey turkey)
        this.turkey = turkey;
    
    @Override
    public void gaga() 
        turkey.gogo();
    


    @Override
    public void fly() 
        for(int i = 0;i<3;i++)
            turkey.fly();//因为鸭子飞的远，所以更改一部分
        
    

• 测试

public class MainTest 
    public static void main(String[] args) 
        RedDuck redDuck = new RedDuck();
        RedTurkey redTurkey = new RedTurkey();
        Duck duckTurkey = new TurkeyAdapter(redTurkey);
        duckTurkey.gaga();
        duckTurkey.fly();