// Tank class

public class Tank
{
     // default constructor
    public Tank()
    {
        myAmmo = 10;
        myX = 0;
        myY = 0;
    }
    
    // "other" constructor
    public Tank(int ammo, int x, int y)
    {   
        myAmmo = ammo;
        myX = x;
        myY = y;
    }
    
    // accessor methods
    public int getAmmo()
    {
        return myAmmo;
    }
 
    public int getX()
    {
        return myX;
    }
    
    public int getY()
    {
        return myY;
    }
    
    // modifier methods
    public void setAmmo(int ammo)
    {
        myAmmo = ammo;
    }
    
    public void setX(int x)
    {
        myX = x;
    }
    
    public void setY(int y)
    {
        myY = y;
    }
    
    // "interesting" methods
    public void shoot()
    {
        myAmmo = myAmmo - 1;	// could be myAmmo--;
    }
    
    public void moveTo(int newX, int newY)
    {
        myX = newX;
        myY = newY;
    }
    
    // properties
    private int myAmmo;
    private int myX;
    private int myY;
}