坦克大战（一期）-设计模式-观察者模式联系

src/main/java/com/msb/observer/v7/Child.java

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+package com.msb.observer.v7;/**
+ * @Author bingor
+ * @Date 2022/10/13 19:18
+ * @Description: com.msb.observer.v2
+ * @Version: 1.0
+ */
+
+import java.time.LocalDateTime;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ *@ClassName Child
+ *@Description TODO
+ *@Author bingor
+ *@Date 2022/10/13 19:18
+ *@Version 3.0
+ */
+public class Child {
+
+    private boolean cry = false;
+    private List<Observer> observers = new ArrayList<>();
+
+    {
+        observers.add(new Dad());
+        observers.add(new Mum());
+    }
+
+    public boolean isCry() {
+        return cry;
+    }
+
+    public void wakeUp() {
+        this.cry = true;
+        WakeUpEvent event = new WakeUpEvent(LocalDateTime.now(), "bed", this);
+        for (Observer observer : observers) {
+            observer.actionOnWakeUp(event);
+        }
+    }
+}

src/main/java/com/msb/observer/v7/Dad.java

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+package com.msb.observer.v7;/**
+ * @Author bingor
+ * @Date 2022/10/13 19:18
+ * @Description: com.msb.observer.v3
+ * @Version: 1.0
+ */
+
+/**
+ *@ClassName Dad
+ *@Description TODO
+ *@Author bingor
+ *@Date 2022/10/13 19:18
+ *@Version 3.0
+ */
+public class Dad implements Observer {
+    public void feed() {
+        System.out.println("孩子醒了，爸爸给孩子喂奶……");
+    }
+    @Override
+    public void actionOnWakeUp(WakeUpEvent event) {
+        if(event.getSource().isCry() && "hungry".equals(event.getLocation())) {
+            feed();
+        }
+    }
+}

src/main/java/com/msb/observer/v7/Mum.java

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+package com.msb.observer.v7;/**
+ * @Author bingor
+ * @Date 2022/10/13 19:18
+ * @Description: com.msb.observer.v3
+ * @Version: 1.0
+ */
+
+/**
+ *@ClassName Dad
+ *@Description TODO
+ *@Author bingor
+ *@Date 2022/10/13 19:18
+ *@Version 3.0
+ */
+public class Mum implements Observer {
+    public void hug() {
+        System.out.println("孩子醒了，妈妈抱抱孩子……");
+    }
+    @Override
+    public void actionOnWakeUp(WakeUpEvent event) {
+        if(event.getSource().isCry() && "bed".equals(event.getLocation())) {
+            hug();
+        }
+    }
+}

src/main/java/com/msb/observer/v7/Observer.java

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+package com.msb.observer.v7;
+
+/**
+ * @Author bingor
+ * @Date 2022/10/13 19:33
+ * @Description: com.msb.observer.v5
+ * @Version: 1.0
+ */
+public interface Observer {
+    public void actionOnWakeUp(WakeUpEvent event);
+}

src/main/java/com/msb/observer/v7/Observer07.java

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+package com.msb.observer.v7;/**
+ * @Author bingor
+ * @Date 2022/10/13 19:28
+ * @Description: com.msb.observer.v4
+ * @Version: 1.0
+ */
+
+/**
+ *@ClassName Observer04
+ *@Description TODO
+ *@Author bingor
+ *@Date 2022/10/13 19:28
+ *@Version 3.0
+ */
+public class Observer07 {
+    public static void main(String[] args) {
+        Child child = new Child();
+        child.wakeUp();
+    }
+}

src/main/java/com/msb/observer/v7/WakeUpEvent.java

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+package com.msb.observer.v7;/**
+ * @Author bingor
+ * @Date 2022/10/13 19:56
+ * @Description: com.msb.observer.v6
+ * @Version: 1.0
+ */
+
+import java.time.LocalDateTime;
+
+/**
+ *@ClassName WakeUpEvent
+ *@Description TODO
+ *@Author bingor
+ *@Date 2022/10/13 19:56
+ *@Version 3.0
+ */
+public class WakeUpEvent {
+    private LocalDateTime localDateTime;
+    private String location;
+    private Child source;
+
+    public WakeUpEvent(LocalDateTime localDateTime, String location, Child source) {
+        this.localDateTime = localDateTime;
+        this.location = location;
+        this.source = source;
+    }
+
+    public LocalDateTime getLocalDateTime() {
+        return localDateTime;
+    }
+
+    public String getLocation() {
+        return location;
+    }
+
+    public Child getSource() {
+        return source;
+    }
+}

src/main/java/com/msb/observer/v8/Child.java

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+package com.msb.observer.v8;/**
+ * @Author bingor
+ * @Date 2022/10/13 19:18
+ * @Description: com.msb.observer.v2
+ * @Version: 1.0
+ */
+
+import java.time.LocalDateTime;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ *@ClassName Child
+ *@Description TODO
+ *@Author bingor
+ *@Date 2022/10/13 19:18
+ *@Version 3.0
+ */
+public class Child {
+
+    private boolean cry = false;
+    private List<Observer> observers = new ArrayList<>();
+
+    {
+        observers.add(new Dad());
+        observers.add(new Mum());
+    }
+
+    public boolean isCry() {
+        return cry;
+    }
+
+    public void wakeUp() {
+        this.cry = true;
+        WakeUpEvent event = new WakeUpEvent(LocalDateTime.now(), "bed", this);
+        for (Observer observer : observers) {
+            observer.actionOnWakeUp(event);
+        }
+    }
+}

src/main/java/com/msb/observer/v8/Dad.java

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+package com.msb.observer.v8;/**
+ * @Author bingor
+ * @Date 2022/10/13 19:18
+ * @Description: com.msb.observer.v3
+ * @Version: 1.0
+ */
+
+/**
+ *@ClassName Dad
+ *@Description TODO
+ *@Author bingor
+ *@Date 2022/10/13 19:18
+ *@Version 3.0
+ */
+public class Dad implements Observer {
+    public void feed() {
+        System.out.println("孩子醒了，爸爸给孩子喂奶……");
+    }
+    @Override
+    public void actionOnWakeUp(WakeUpEvent event) {
+        if(event.getSource().isCry() && "hungry".equals(event.getLocation())) {
+            feed();
+        }
+    }
+}

src/main/java/com/msb/observer/v8/Event.java

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+package com.msb.observer.v8;/**
+ * @Author bingor
+ * @Date 2022/10/14 11:36
+ * @Description: com.msb.observer.v8
+ * @Version: 1.0
+ */
+
+/**
+ *@ClassName Event
+ *@Description TODO
+ *@Author bingor
+ *@Date 2022/10/14 11:36
+ *@Version 3.0
+ */
+public abstract class Event<T> {
+    public abstract T getSource();
+}

src/main/java/com/msb/observer/v8/Mum.java

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+package com.msb.observer.v8;/**
+ * @Author bingor
+ * @Date 2022/10/13 19:18
+ * @Description: com.msb.observer.v3
+ * @Version: 1.0
+ */
+
+/**
+ *@ClassName Dad
+ *@Description TODO
+ *@Author bingor
+ *@Date 2022/10/13 19:18
+ *@Version 3.0
+ */
+public class Mum implements Observer {
+    public void hug() {
+        System.out.println("孩子醒了，妈妈抱抱孩子……");
+    }
+    @Override
+    public void actionOnWakeUp(WakeUpEvent event) {
+        if(event.getSource().isCry() && "bed".equals(event.getLocation())) {
+            hug();
+        }
+    }
+}

src/main/java/com/msb/observer/v8/Observer.java

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+package com.msb.observer.v8;
+
+/**
+ * @Author bingor
+ * @Date 2022/10/13 19:33
+ * @Description: com.msb.observer.v5
+ * @Version: 1.0
+ */
+public interface Observer {
+    public void actionOnWakeUp(WakeUpEvent event);
+}

src/main/java/com/msb/observer/v8/Observer08.java

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+package com.msb.observer.v8;/**
+ * @Author bingor
+ * @Date 2022/10/13 19:28
+ * @Description: com.msb.observer.v4
+ * @Version: 1.0
+ */
+
+/**
+ *@ClassName Observer04
+ *@Description TODO
+ *@Author bingor
+ *@Date 2022/10/13 19:28
+ *@Version 3.0
+ */
+public class Observer08 {
+    public static void main(String[] args) {
+        Child child = new Child();
+        child.wakeUp();
+    }
+}

src/main/java/com/msb/observer/v8/WakeUpEvent.java

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+package com.msb.observer.v8;/**
+ * @Author bingor
+ * @Date 2022/10/13 19:56
+ * @Description: com.msb.observer.v6
+ * @Version: 1.0
+ */
+
+import java.time.LocalDateTime;
+
+/**
+ *@ClassName WakeUpEvent
+ *@Description TODO
+ *@Author bingor
+ *@Date 2022/10/13 19:56
+ *@Version 3.0
+ */
+public class WakeUpEvent extends Event<Child> {
+    private LocalDateTime localDateTime;
+    private String location;
+    private Child source;
+
+    public WakeUpEvent(LocalDateTime localDateTime, String location, Child source) {
+        this.localDateTime = localDateTime;
+        this.location = location;
+        this.source = source;
+    }
+
+    public LocalDateTime getLocalDateTime() {
+        return localDateTime;
+    }
+
+    public String getLocation() {
+        return location;
+    }
+
+    @Override
+    public Child getSource() {
+        return source;
+    }
+}