适配器（二）

接口A：

packagecom.jerry.design.adapter2.imp;

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publicinterfaceInterfaceA {

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publicvoidtestA();

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}

接口B：

packagecom.jerry.design.adapter2.imp;

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publicinterfaceInterfaceB {

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publicvoidtestB();

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}

实现类A：

packagecom.jerry.design.adapter2.impl;

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importcom.jerry.design.adapter2.imp.InterfaceA;

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publicclassImplAimplementsInterfaceA{

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@Override

publicvoidtestA() {

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System.out.println(" i am do something as InterfaceA!");

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}

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}

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实现类B：

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packagecom.jerry.design.adapter2.impl;

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importcom.jerry.design.adapter2.imp.InterfaceB;

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publicclassImplBimplementsInterfaceB{

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@Override

publicvoidtestB() {

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System.out.println(" i am do something as InterfaceB!");

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}

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}

实现类C：
package com.jerry.design.adapter2.impl;
import com.jerry.design.adapter2.imp.InterfaceA;import com.jerry.design.adapter2.imp.InterfaceB;


public class ImplC implements InterfaceB,InterfaceA{
private InterfaceA implA;private InterfaceB implB;public ImplC(InterfaceA implA,InterfaceB implB){this.implA = implA;this.implB = implB;}@Overridepublic void testB() {implA.testA();}@Overridepublic void testA() {implB.testB();}
}

测试类：
package com.jerry.design.adapter2.client;
import com.jerry.design.adapter2.imp.InterfaceA;import com.jerry.design.adapter2.imp.InterfaceB;import com.jerry.design.adapter2.impl.ImplA;import com.jerry.design.adapter2.impl.ImplB;import com.jerry.design.adapter2.impl.ImplC;

public class Test {public static void main(String[] args) {InterfaceA implA = (InterfaceA) new ImplA();InterfaceB implB = (InterfaceB) new ImplB();InterfaceA implC = (InterfaceA) new ImplC(implA,implB);InterfaceB implD = (InterfaceB) new ImplC(implA,implB);implC.testA();// i am do something as InterfaceB!implD.testB();// i am do something as InterfaceA!}
}
总结：正向反向均可适配。