Someone

public class Window
{
    private int size=5;
    public Window ()
    {
    }
    
    public Window (int x)
    {
        this.size = x;
    }
    
    public int getSize()
    {
        return size;
    }
    
    public static void main(String args[])
    {
        Window w1 = new Window();
        Window w2 = new Window(4);
        Window w3 = new Window(6);
        Window w4 = new Window();
        System.out.println ("The size of window w1 is: " + w1.getSize());
        System.out.println ("The size of window w2 is: " + w2.getSize());
        System.out.println ("The size of window w3 is: " + w3.getSize());
        System.out.println ("The size of window w4 is: " + w4.getSize());
    }
}