// Example 1.

public class Main
{
    public static void main(String[] args)
    {
        A obj = new A();
    
        obj.times3();    
        obj.times2();
        obj.times3();
        System.out.println(obj);
    }
}

public class A
{
    private int x;
    
    public A()
    {
        x = 1;
    }
    
    public void times2()
    {
        x *= 2;
    }
    
    public void times3()
    {
        x *= 3;
    }
    
    public String toString()
    {
        return "x == " + x;
    }
}


Example 2.

public class Main
{
    public static void main(String[] args)
    {
        A obj1 = new A();
        A obj2 = new A(9);
        obj1.augment();
        obj2.augment(1);
        obj1.augment(2);
        obj2.augment();
        System.out.println(obj1);        
        System.out.println(obj2);
    }
}

public class A
{
    private int x;
    private String y;
    
    public A()
    {
        x = 5;
        y = "stu";
    }
    
    public A(int a)
    {
        x = a + 4;
        y = "mn" + a + 2;
    }
    
    public A(int a, String b)
    {
        x = a + 3;
        y = "def" + 6 + a;
    }
    
    public void augment()
    {
        x++;
        y += "z";
    }
    
    public void augment(int a)
    {
        x += a;
        y += a;
    }
    
    public String toString()
    {
        return "x == " + x + " y == " + y;
    }
}