原创

适配器模式

一、适配器模式,就像是你的电脑的电源一样,可以将220v的电压转化为你电脑能够承受的电压,又如从美国带回来的电器,需要一个适配电源将电压220v改成110v 二、适配器的两种模式:类的适配器和对象适配器 三、类适配器(主要使用继承方式来适配) 1、类适配器模式
AmericaPower.java(美国的电源头是三个脚的)
package com.adapterModel.classAdapter;

public interface AmericaPower {
    public void threeStep();
}
APower.java(美国电源插头的具体实现类)
package com.adapterModel.classAdapter;

public class APower implements AmericaPower {

    @Override
    public void threeStep() {
        System.out.println("我是三角的电源");
    }

}
ChinaPower.java(中国电源插头的接口类)
package com.adapterModel.classAdapter;

public interface ChinaPower {
    
    public void twoStep();

}
CPower.java(中国插头的具体实现类)
package com.adapterModel.classAdapter;

public class CPower extends APower implements ChinaPower {

    @Override
    public void twoStep() {
        
        this.threeStep();

    }

}
测试类
package com.adapterModel.classAdapter;

public class Test {

    public static void main(String[] args) {
        ChinaPower chinaPower = new CPower();
        //插入两脚的电源线,可以适配三角的插头。
        chinaPower.twoStep();
        
    }
    
    
    
}
2、对象适配器
AmericaPower.java
package com.adapterModel.instanceAdapter;

public interface AmericaPower {
    public void threeStep();
}
APower.java
package com.adapterModel.instanceAdapter;

public class APower implements AmericaPower {

    @Override
    public void threeStep() {
        System.out.println("我是三角的电源");
    }

}
ChinaPower.java
package com.adapterModel.instanceAdapter;

public interface ChinaPower {
    
    public void twoStep();

}
CPower.java(内有一个美国插头的实例对象)
package com.adapterModel.instanceAdapter;

public class CPower implements ChinaPower {
    
    private AmericaPower ap = new APower();

    @Override
    public void twoStep() {
        
        ap.threeStep();

    }

}
测试类
package com.adapterModel.instanceAdapter;

public class Test {

    public static void main(String[] args) {
        ChinaPower chinaPower = new CPower();
        //插入两脚的电源线,可以适配三角的插头。
        chinaPower.twoStep();
        
    }
    
    
    
}
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