Java结构型设计模式之桥接模式详细讲解

public interface IImplementor {
    void operationImpl();
}

public class ConcreteImplementorA implements IImplementor {
    public void operationImpl() {
        System.out.println("ConcreteImplementorA operationImpl");
    }
}
public class ConcreteImplementorB implements IImplementor {
    public void operationImpl() {
        System.out.println("ConcreteImplementorB operationImpl");
    }
}

public abstract class Abstraction {
    protected IImplementor mImplementor;
    public Abstraction(IImplementor implementor) {
        this.mImplementor = implementor;
    }
    public void operation() {
        this.mImplementor.operationImpl();
    }
}

public class RefinedAbstraction extends Abstraction {
    public RefinedAbstraction(IImplementor implementor) {
        super(implementor);
    }
    @Override
    public void operation() {
        super.operation();
        System.out.println("RefinedAbstraction operation");
    }
}

    public static void main(String[] args) {
        // 来一个实现化角色
        IImplementor impA = new ConcreteImplementorA();
        IImplementor impB = new ConcreteImplementorB();
        // 来一个抽象化角色，聚合实现
        Abstraction absA = new RefinedAbstraction(impA);
        Abstraction absB = new RefinedAbstraction(impB);
        // 执行操作
        absA.operation();
        absB.operation();
    }

public interface IMessage {
    void send(String message);
}

public class EmailMessage implements IMessage {
    @Override
    public void send(String message) {
        System.out.println("使用邮件消息发送" + message);
    }
}
public class SmsMessage implements IMessage {
    @Override
    public void send(String message) {
        System.out.println("使用短信消息发送" + message);
    }
}

public abstract class AbastractMessage {
    // 持有实现角色的引用
    private IMessage message;
    // 构造函数，传入实现角色的引用
    public AbastractMessage(IMessage message) {
        this.message = message;
    }
    // 发送消息的方法，调用实现角色的方法
    void sendMessage(String message){
        this.message.send(message);
    }
}

public class NomalMessage extends AbastractMessage {
    public NomalMessage(IMessage message) {
        super(message);
    }
}

public class ImportanceMessage extends AbastractMessage {
    public ImportanceMessage(IMessage message) {
    	message = message + "【重要消息】";
        super(message);
    }
    void sendMessage(String message){
        super.sendMessage(message);
    }
}

    public static void main(String[] args) {
        IMessage message = new EmailMessage();
        AbastractMessage abastractMessage = new NomalMessage(message);
        abastractMessage.sendMessage("hello world");
        message = new SmsMessage();
        abastractMessage = new ImportanceMessage(message);
        abastractMessage.sendMessage("hello world");
    }