适配器（一）
单项适配器模式：
原接口：packagecom.jerry.design.adapter1.imp;
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publicinterfaceInterfaceA {
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publicvoidtestA();
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}
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接口实现类：
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packagecom.jerry.design.adapter1.impl;
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importcom.jerry.design.adapter1.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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目标接口：
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packagecom.jerry.design.adapter1.imp;
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publicinterfaceInterfaceB {
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publicvoidtestB();
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}
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目标接口实现类：
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packagecom.jerry.design.adapter1.impl;
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importcom.jerry.design.adapter1.imp.InterfaceA;
importcom.jerry.design.adapter1.imp.InterfaceB;
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publicclassImplBimplementsInterfaceB{
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privateInterfaceAimplA;
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publicImplB(InterfaceA implA){
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this.implA= implA;
}
@Override
publicvoidtestB() {
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implA.testA();
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}
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}
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测试方法：
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packagecom.jerry.design.adapter1.client;
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importcom.jerry.design.adapter1.imp.InterfaceA;
importcom.jerry.design.adapter1.imp.InterfaceB;
importcom.jerry.design.adapter1.impl.ImplA;
importcom.jerry.design.adapter1.impl.ImplB;
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publicclassTest {
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publicstaticvoidmain(String[] args) {
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InterfaceA implA = (InterfaceA)newImplA();
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InterfaceB implB = (InterfaceB)newImplB(implA);
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implB.testB();// i am do something as InterfaceA!
}
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}
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总结：原接口转换为目标接口
