Temat: Java (podstawy) problem z programem

package assignment1;

/*
    * Square class
    * Author:  Tony Cooke
    * Date:    2009
    */

import java.awt.*;

public class Square  
{   
   private double x,y;      // Current position of the square.
   
   private Color color;     // The color of the square.

   private int side;   // The side of the square

   public Square() // constructor
   {
      x = 100;
      y = 100;
      side = 5;
	  color = Color.orange;
   }
  
   
   public void draw(Graphics g) 
   {
      // Draw the square in the graphics context g.  Note: The drawing color
      // in g is changed to the color of the square.
      g.setColor(color);
      g.fillRect( (int)(x), (int)(y), (int)(side), (int)(side) );
   }
   
   public void setSide(int r)
   {
       side = r;
   }
   
   public int getSide()
   {
       return side;
   }
    
   public int getX()
   {
        return (int) x;
   }
    
   public int getY()
   {
        return (int) y;
   }
   
   public void setX(int xIn)
   {
       x = xIn;
   }
   
   public void setY(int setY)
   {
       y = setY;
   }
}  // end class Square

package assignment1;

import java.awt.*;

public class FleetOfShips
{
    private Square[] fleetMembers; // declare fleetMembers as an array of Square
    private int total = 5; // Max number of squares in fleet
    
    FleetOfShips() // Constructor
    {
        fleetMembers = new Square[total]; // create an empty array with 5 "locations"
        for (int i = 0; i < total; i++) // loop: carry on whilst i is less than 5, add 1 each cycle
        {
            fleetMembers[i] = new Square();  // create a Square object for location [i] in the array
            fleetMembers[i].setX (i * 10); // multiply i by 10, and pass this to the setX method
            fleetMembers[i].setY (i * 10); // multiply i by 10, and pass this to the setY method
        }
    }
    
    public void draw(Graphics g)
    {
        for (int i = 0; i < total; i++) // loop: carry on whilst i is less than 5, add 1 each cycle
        {
            fleetMembers[i].draw(g);    // ask fleetMember[i] to draw itself
        }
    }
    
    public void goSouth(int howFar)
    {
        for (int i = 0; i < total; i++) // loop: carry on whilst i is less than 5, add 1 each cycle
        {
            // ask fleetMember[i] for its current Y position
            // then add howFar (howFar to go south) to it
            // then pass this to the setY method 
            fleetMembers[i].setY (fleetMembers[i].getY() + howFar); 
        }
    }    
    
}

package assignment1;

import java.awt.*;

public class FleetOfFleets
{
    private FleetOfShips[] fleetMembers; // declare fleetMembers as an array of FleetOfShips
    private int total = 5; // Max number of squares in fleet
 
    FleetOfFleets() // Constructor
    {
        fleetMembers = new FleetOfShips[total]; // create an empty array with 5 "locations"
        for (int i = 0; i < total; i++) // loop: carry on whilst i is less than 5, add 1 each cycle
        {
            fleetMembers[i] = new FleetOfShips();  // create a FleetOfShips object for location [i] in the array
            fleetMembers[i].setX (i * 10); // multiply i by 10, and pass this to the setX method
            fleetMembers[i].setY (i * 10); // multiply i by 10, and pass this to the setY method
        }
    }
    
    public void draw(Graphics g)
    {
        for (int i = 0; i < total; i++) // loop: carry on whilst i is less than 5, add 1 each cycle
        {
            fleetMembers[i].draw(g);    // ask fleetMember[i] to draw itself
        }
    }
    
    public void goSouth(int howFar)
    {
        for (int i = 0; i < total; i++) // loop: carry on whilst i is less than 5, add 1 each cycle
        {
            // ask fleetMember[i] for its current Y position
            // then add howFar (howFar to go south) to it
            // then pass this to the setY method 
            fleetMembers[i].setY (fleetMembers[i].getY() + howFar); 
        }
    }    
    
}