java设计模式---桥接模式

桥接模式的目的是把抽象和具体实现分离，其uml类图如下所示：

public interface SendMessage {abstract void send(String message,String name);}

public class EmailSend implements SendMessage{public void send(String message,String name){System.out.println(message+" through email send to"+ name);}}

public class SystemSend implements SendMessage{public void send(String message,String name){System.out.println(message+" through send to "+name);}}

public abstract class Message{public SendMessage sendMethd ;public Message(SendMessage s){this.sendMethd = s;}public abstract void send(String message,String name);}

public class CommandMessage extends Message{public CommandMessage(SendMessage s){super(s);}public void send(String message,String name){this.sendMethd.send(message, name);}}

public class ErgentMessage extends Message{public ErgentMessage(SendMessage s){super(s);}public void send(String m,String n){m+="加急";this.sendMethd.send(m,n);}}

public class TestBridge{public static void main(String args[]){SendMessage s1 = new EmailSend();Message m1 = new CommandMessage(s1);m1.send("utstarcom","china");Message m2 = new ErgentMessage(s1);m2.send("utstarcom","china");}}

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