feat(命令模式）：create

java/com/kongxiang/raindrop/dp/type/behavior/command/ICommand.java

+package com.kongxiang.raindrop.dp.type.behavior.command;
+
+/**
+ * 抽象命令类
+ *
+ * @author 孔翔
+ * @since 2023-10-20
+ * copyright for author : 孔翔 at 2023-10-20
+ * dp
+ */
+public interface ICommand {
+
+    public void execute();
+
+    public void undo();
+}

java/com/kongxiang/raindrop/dp/type/behavior/command/TvChangeChannelCommand.java

+package com.kongxiang.raindrop.dp.type.behavior.command;
+
+import lombok.AllArgsConstructor;
+
+/**
+ * @author 孔翔
+ * @since 2023-10-20
+ * copyright for author : 孔翔 at 2023-10-20
+ * dp
+ */
+@AllArgsConstructor
+public class TvChangeChannelCommand implements ICommand {
+    private TvReceiver tvReceiver;
+
+
+    @Override
+    public void execute() {
+        tvReceiver.next();
+    }
+
+    @Override
+    public void undo() {
+        tvReceiver.pre();
+    }
+}

java/com/kongxiang/raindrop/dp/type/behavior/command/TvController.java

+package com.kongxiang.raindrop.dp.type.behavior.command;
+
+import lombok.AllArgsConstructor;
+
+/**
+ * @author 孔翔
+ * @since 2023-10-20
+ * copyright for author : 孔翔 at 2023-10-20
+ * dp
+ */
+@AllArgsConstructor
+public class TvController {
+
+
+    private ICommand on  ;
+    private ICommand off  ;
+
+    private ICommand change ;
+
+    public void trunOn() {
+        on.execute();
+    }
+
+    public void trunOff() {
+        off.execute();
+    }
+
+    public void turnNext() {
+        change.execute();
+    }
+
+    public void turnPre() {
+        change.undo();
+    }
+}

java/com/kongxiang/raindrop/dp/type/behavior/command/TvMain.java

+package com.kongxiang.raindrop.dp.type.behavior.command;
+
+/**
+ * @author 孔翔
+ * @since 2023-10-20
+ * copyright for author : 孔翔 at 2023-10-20
+ * dp
+ */
+public class TvMain {
+
+    public static void main(String[] args) {
+        TvReceiver tvReceiver = new TvReceiver();
+        ICommand on = new TvOnCommand(tvReceiver);
+        ICommand off = new TvOffCommand(tvReceiver);
+        ICommand change = new TvChangeChannelCommand(tvReceiver);
+
+
+        TvController controller = new TvController(on,off,change);
+
+        controller.trunOn();
+        controller.turnNext();
+        controller.turnPre();
+        controller.trunOff();
+    }
+}

java/com/kongxiang/raindrop/dp/type/behavior/command/TvOffCommand.java

+package com.kongxiang.raindrop.dp.type.behavior.command;
+
+import lombok.AllArgsConstructor;
+
+/**
+ * @author 孔翔
+ * @since 2023-10-20
+ * copyright for author : 孔翔 at 2023-10-20
+ * dp
+ */
+@AllArgsConstructor
+public class TvOffCommand implements ICommand {
+    private TvReceiver tvReceiver;
+
+    @Override
+    public void execute() {
+        tvReceiver.off();
+    }
+
+    @Override
+    public void undo() {
+        tvReceiver.on();
+    }
+}

java/com/kongxiang/raindrop/dp/type/behavior/command/TvOnCommand.java

+package com.kongxiang.raindrop.dp.type.behavior.command;
+
+import lombok.AllArgsConstructor;
+
+/**
+ * @author 孔翔
+ * @since 2023-10-20
+ * copyright for author : 孔翔 at 2023-10-20
+ * dp
+ */
+@AllArgsConstructor
+public class TvOnCommand implements ICommand {
+    private TvReceiver tvReceiver;
+
+    @Override
+    public void execute() {
+        tvReceiver.on();
+    }
+
+    @Override
+    public void undo() {
+        tvReceiver.off();
+    }
+}

java/com/kongxiang/raindrop/dp/type/behavior/command/TvReceiver.java

+package com.kongxiang.raindrop.dp.type.behavior.command;
+
+/**
+ * @author 孔翔
+ * @since 2023-10-20
+ * copyright for author : 孔翔 at 2023-10-20
+ * dp
+ */
+public class TvReceiver {
+    public void on() {
+        System.out.println("电视开机");
+    }
+
+    public void off() {
+        System.out.println("电视关机");
+    }
+
+    public void next() {
+        System.out.println("换下一个台");
+    }
+
+    public void pre(){
+        System.out.println("换上一个台");
+    }
+}

java/com/kongxiang/raindrop/dp/type/behavior/command/命令模式.puml

+@startuml
+'https://plantuml.com/sequence-diagram
+skinparam linetype ortho
+
+ interface ICommand {
+    + void execute();
+    + void undo();
+ }
+
+ class CommandImpl
+
+ class Invoker {
+    - ICommand
+    public turnCommand()
+ }
+
+ class Receiver{
+    + someOperate();
+ }
+ICommand <|-- CommandImpl
+Invoker o--> ICommand
+
+CommandImpl  --> Receiver
+
+@enduml
\ No newline at end of file