23种设计模式之桥接模式代码实例

桥接模式就是把事物与其具体的实现相分离，抽象化与实现化解耦。

    public interface Sourceable {
        public void method();
    }  

    public class SourceSub1 implements Sourceable {  

        @Override
        public void method() {
            System.out.println("this is the first sub!");
        }
    }  

    public class SourceSub2 implements Sourceable {  

        @Override
        public void method() {
            System.out.println("this is the second sub!");
        }
    }  

    public abstract class Bridge {
        private Sourceable source;  

        public void method(){
            source.method();
        }  

        public Sourceable getSource() {
            return source;
        }  

        public void setSource(Sourceable source) {
            this.source = source;
        }
    }  

    public class MyBridge extends Bridge {
        public void method(){
            getSource().method();
        }
    }  

测试类：

    public class BridgeTest {  

        public static void main(String[] args) {  

            Bridge bridge = new MyBridge();  

            /*调用第一个对象*/
            Sourceable source1 = new SourceSub1();
            bridge.setSource(source1);
            bridge.method();  

            /*调用第二个对象*/
            Sourceable source2 = new SourceSub2();
            bridge.setSource(source2);
            bridge.method();
        }
    }  

输出：

this is the first sub!
this is the second sub!