演示简单Proxy代理类

gistfile1.java

	public static void main(String[] args) {
		List list = (List) Proxy.newProxyInstance(List.class.getClassLoader(),
                new Class[] { List.class },
                new InvocationHandler() {
					
					public Object invoke(Object obj, Method method, Object[] args)
							throws Throwable {
						if ("size".equals(method.getName()))
							return (int)(Math.random() * 1000);
						return null;
					}
				});
		for (int i = 0; i < 10; i++) {
			System.out.println(list.size());
		}

	}