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notes/设计模式.md

@@ -2349,6 +2349,148 @@ public class Client {
 
 将抽象与实现分离开来，使它们可以独立变化。
 
+### 类图
+
+- Abstraction：定义抽象类的接口
+- Implementor：定义实现类接口
+
+<div align="center"> <img src="../pics//c2cbf5d2-82af-4c78-bd43-495da5adf55f.png"/> </div><br>
+
+### 实现
+
+RemoteControl 表示遥控器，指代 Abstraction。
+
+TV 表示电视，指代 Implementor。
+
+桥接模式将遥控器和电视分离开来，从而可以独立改变遥控器或者电视的实现。
+
+```java
+public abstract class TV {
+    public abstract void on();
+
+    public abstract void off();
+
+    public abstract void tuneChannel();
+}
+```
+
+```java
+public class Sony extends TV{
+    @Override
+    public void on() {
+        System.out.println("Sony.on()");
+    }
+
+    @Override
+    public void off() {
+        System.out.println("Sony.off()");
+    }
+
+    @Override
+    public void tuneChannel() {
+        System.out.println("Sony.tuneChannel()");
+    }
+}
+```
+
+```java
+public class RCA extends TV{
+    @Override
+    public void on() {
+        System.out.println("RCA.on()");
+    }
+
+    @Override
+    public void off() {
+        System.out.println("RCA.off()");
+    }
+
+    @Override
+    public void tuneChannel() {
+        System.out.println("RCA.tuneChannel()");
+    }
+}
+```
+
+```java
+public abstract class RemoteControl {
+    protected TV tv;
+
+    public RemoteControl(TV tv) {
+        this.tv = tv;
+    }
+
+    public abstract void on();
+
+    public abstract void off();
+
+    public abstract void tuneChannel();
+}
+```
+
+```java
+public class ConcreteRemoteControl1 extends RemoteControl {
+    public ConcreteRemoteControl1(TV tv) {
+        super(tv);
+    }
+
+    @Override
+    public void on() {
+        System.out.println("ConcreteRemoteControl1.on()");
+        tv.on();
+    }
+
+    @Override
+    public void off() {
+        System.out.println("ConcreteRemoteControl1.off()");
+        tv.off();
+    }
+
+    @Override
+    public void tuneChannel() {
+        System.out.println("ConcreteRemoteControl1.tuneChannel()");
+        tv.tuneChannel();
+    }
+}
+```
+
+```java
+public class ConcreteRemoteControl2 extends RemoteControl {
+    public ConcreteRemoteControl2(TV tv) {
+        super(tv);
+    }
+
+    @Override
+    public void on() {
+        System.out.println("ConcreteRemoteControl2.on()");
+        tv.on();
+    }
+
+    @Override
+    public void off() {
+        System.out.println("ConcreteRemoteControl2.off()");
+        tv.off();
+    }
+
+    @Override
+    public void tuneChannel() {
+        System.out.println("ConcreteRemoteControl2.tuneChannel()");
+        tv.tuneChannel();
+    }
+}
+```
+
+```java
+public class Client {
+    public static void main(String[] args) {
+        RemoteControl remoteControl1 = new ConcreteRemoteControl1(new RCA());
+        remoteControl1.on();
+        remoteControl1.off();
+        remoteControl1.tuneChannel();
+    }
+}
+```
+
 ### JDK
 
 - AWT (It provides an abstraction layer which maps onto the native OS the windowing support.)