1.類適配

2.對象適配

3.接口適配

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1.類適配

待適配的接口

package com.yun.base.design.adapter;public interface Targetable { /* 與原類中的方法相同 */ public void method1(); /* 新類的方法 */ public void method2(); }

待適配的類

package com.yun.base.design.adapter;/*** 01、類的適配器模式* 核心思想就是：有一個Source類，擁有一個方法，待適配，* 目標接口是Targetable，通過Adapter類，將Source的功能擴展到Targetable里* @author Administrator**/ public class Source {public void method1() { System.out.println("this is original method!"); }}

適配器

package com.yun.base.design.adapter;/*** 01、類的適配器模式* 核心思想就是：有一個Source類，擁有一個方法，待適配，* 目標接口是Targetable，通過Adapter類，將Source的功能擴展到Targetable里* @author Administrator**/ public class Adapter extends Source implements Targetable { @Override public void method2() { System.out.println("this is the targetable method!"); } }

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2.對象適配

待適配接口?Targetable ，待適配類?Source

適配器

package com.yun.base.design.adapter;/*** 02、對象的適配器模式 基本思路和類的適配器模式相同，只是將Adapter類作修改，這次不繼承Source類，* 而是持有Source類的實例，以達到解決兼容性的問題* @author Administrator**/ public class Wrapper implements Targetable { private Source source; public Wrapper(Source source){ super(); this.source = source; } @Override public void method2() { System.out.println("this is the targetable method!"); } @Override public void method1() { source.method1(); } }

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3.接口適配

待適配接口?Sourceable，待適配的類

抽象類

package com.yun.base.design.adapter;public abstract class Wrapper2 implements Sourceable{ public void method1(){} public void method2(){} }

實現

package com.yun.base.design.adapter;public class SourceSub1 extends Wrapper2 { public void method1(){ System.out.println("the sourceable interface's first Sub1!"); } } package com.yun.base.design.adapter;public class SourceSub2 extends Wrapper2 { public void method2(){ System.out.println("the sourceable interface's second Sub2!"); } }

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4.測試

package com.yun.base.design.adapter;public class AdapterTest {public static void main(String[] args) { //類適配 classAdapter();//對象適配 objectAdapter();//接口適配 interfaceAdapter();} /*** 類適配*/public static void classAdapter() {Targetable target = new Adapter(); target.method1(); target.method2(); }/*** 對象適配*/public static void objectAdapter() {Source source = new Source(); Targetable target = new Wrapper(source); target.method1(); target.method2(); }/*** 接口適配*/public static void interfaceAdapter() {Sourceable source1 = new SourceSub1(); Sourceable source2 = new SourceSub2(); source1.method1(); source1.method2(); source2.method1(); source2.method2(); }}

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轉載于:https://www.cnblogs.com/yun965861480/p/7238176.html

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