装饰模式

Folgerjun · web-flow · commit 3134fb3f42c7 · 2018-03-12T10:36:01.000+08:00
装饰模式
diff --git a/java-des/src/com/java/design/decorator/Decorator.java b/java-des/src/com/java/design/decorator/Decorator.java
@@ -0,0 +1,15 @@
+package com.java.design.decorator;
+
+public abstract class Decorator implements Person {
+
+	protected Person person;
+
+	public void setPerson(Person person) {
+		this.person = person;
+	}
+
+	@Override
+	public void eat() {
+		person.eat();
+	}
+}
diff --git a/java-des/src/com/java/design/decorator/DecoratorPattern.java b/java-des/src/com/java/design/decorator/DecoratorPattern.java
@@ -0,0 +1,25 @@
+package com.java.design.decorator;
+
+/**
+ * 装饰模式 -----> 对新房进行装修并没有改变房屋的本质，但它可以让房子变得更漂亮、更温馨、更实用。
+ * 在软件设计中，对已有对象（新房）的功能进行扩展（装修）。 把通用功能封装在装饰器中，用到的地方进行调用。
+ * 装饰模式是一种用于替代继承的技术，使用对象之间的关联关系取代类之间的继承关系。引入装饰类，扩充新功能。
+ * 
+ * @author Administrator
+ *
+ */
+public class DecoratorPattern {
+
+	public static void main(String[] args) {
+
+		Man man = new Man();
+		ManDecoratorA decoratorA = new ManDecoratorA();
+		ManDecoratorB decoratorB = new ManDecoratorB();
+
+		decoratorA.setPerson(man);
+		// decoratorB.setPerson(decoratorA);
+		decoratorA.eat();
+
+	}
+
+}
diff --git a/java-des/src/com/java/design/decorator/Man.java b/java-des/src/com/java/design/decorator/Man.java
@@ -0,0 +1,10 @@
+package com.java.design.decorator;
+
+public class Man implements Person {
+
+	@Override
+	public void eat() {
+
+		System.out.println("Man eating ...");
+	}
+}
diff --git a/java-des/src/com/java/design/decorator/ManDecoratorA.java b/java-des/src/com/java/design/decorator/ManDecoratorA.java
@@ -0,0 +1,15 @@
+package com.java.design.decorator;
+
+public class ManDecoratorA extends Decorator {
+
+	@Override
+	public void eat() {
+		super.eat();
+		reEat();
+		System.out.println("Decorator A ...");
+	}
+
+	public void reEat() {
+		System.out.println("Eat again ...");
+	}
+}
diff --git a/java-des/src/com/java/design/decorator/ManDecoratorB.java b/java-des/src/com/java/design/decorator/ManDecoratorB.java
@@ -0,0 +1,11 @@
+package com.java.design.decorator;
+
+public class ManDecoratorB extends Decorator {
+
+	@Override
+	public void eat() {
+		super.eat();
+
+		System.out.println("Man DecoratorB ...");
+	}
+}
diff --git a/java-des/src/com/java/design/decorator/Person.java b/java-des/src/com/java/design/decorator/Person.java
@@ -0,0 +1,7 @@
+package com.java.design.decorator;
+
+public interface Person {
+
+	void eat();
+
+}
