edit proxy

Author: Liu Yuning

src/designpattern/proxy/Proxy.java

@@ -0,0 +1,23 @@
+package designpattern.proxy;
+
+/**
+ * 代理类
+ * 
+ * @author liu yuning
+ *
+ */
+public class Proxy implements Subject {
+
+    // 保存一个引用，使得代理可以访问真实实体
+    Subject subject;
+
+    public Proxy() {
+	subject = new RealSubject();
+    }
+
+    @Override
+    public void request() {
+	subject.request();
+    }
+
+}

src/designpattern/proxy/ProxyClient.java

@@ -0,0 +1,14 @@
+package designpattern.proxy;
+
+/**
+ * 代理客户端
+ * 
+ * @author liu yuning
+ *
+ */
+public class ProxyClient {
+    public static void main(String[] args) {
+	Proxy proxy = new Proxy();
+	proxy.request();
+    }
+}

src/designpattern/proxy/RealSubject.java

@@ -0,0 +1,16 @@
+package designpattern.proxy;
+
+/**
+ * 真实实体类
+ * 
+ * @author liu yuning
+ *
+ */
+public class RealSubject implements Subject {
+
+    @Override
+    public void request() {
+	System.out.println("真实对象的请求");
+    }
+
+}

src/designpattern/proxy/Subject.java

@@ -0,0 +1,11 @@
+package designpattern.proxy;
+
+/**
+ * 定义真实实体类与代理类共用的接口
+ * 
+ * @author liu yuning
+ *
+ */
+public interface Subject {
+    public void request();
+}