Instructions
1. Use a proxy to wrap the object, and then use the proxy object to replace the original object.
2. Any call to the original object must go through the proxy. The proxy object determines if and when method calls are directed to the original object.
Example
public static void main(String[] args) {
Roommate roommate = new Roommate("zhangsan");
Hungry proxyInstance = (Hungry) Proxy.newProxyInstance(
roommate.getClass().getClassLoader(),
roommate.getClass().getInterfaces(),
new RoommateInvocationHandler<Roommate>(roommate)
);
proxyInstance.callLunch();
}
//输出结果
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