package com.hu.structure.proxy;

public class Client {

	public static void main(String[] args) {
        AbstractObject obj = new ProxyObject();
        obj.operation();
    }

}

package com.hu.structure.proxy;

public class Client {
	public static void main(String[] args) {
        AbstractObject obj = new ProxyObject();
        obj.operation();
    }

}

Update Client.java