4.txt

package jbPack;

import javax.swing.*;
import java.util.*;
import java.io.*;

class Counter{
    private int state;
    public static int op;
    
    public Counter(){
        state = 0;
    }
    
    public int state(){
        op++;
        return state;
    }
    
    public Counter inc(){
        op++;
        state++;
        return this;
    }
    
    public Counter dec(){
        op++;
        state--;
        return this;
    }
    
    public void reset(){
        op++;
        state=0;
    }
}

public                      
class Program {

    public static void main(String[] args)
    {
        new Program(args);
    }        

    public Program(String[] args)
    {
        Counter c = new Counter();
        c.inc();
        c.inc();
        c.inc();
        c.inc();
        System.out.println(c.state());
        System.out.println(c.op);
        Counter d = new Counter();
        d.inc();
        d.inc();
        d.dec();
        System.out.println(d.state());
        System.out.println(d.op);
    }
}