Need help with game

[Krupa Patel]

I am trying to move the ball on the drawing panel. My code seems correct but when I run it, nothing is happening.
Can anyone please tell me what I am doing wrong?

import java.awt.*;
public class Ball{
    private int _x;
    private int _y;
    private int _d;
    private javax.swing.JPanel _panel; // peer object (and container)
    private javax.swing.Timer _timer;
    int _ballX,_ballY;  
    public Ball(javax.swing.JPanel aPanel,int x, int y, int d){
      _x = x;
      _y = y;
      _d = d; 
    }
    public void paint(Graphics g){
        g.setColor(Color.red);
        g.fillOval(_x,_y, _d, _d);
        g.setColor(Color.black);
        g.drawOval(_x,_y,_d,_d);
    }
    public void setX(int x){
        _x = x;
    }
    public void setY(int y){
        _y = y;
    }
    public int getX(){
        return _x;
    }
    public int getY(){
        return _y;
    }
    public int getD(){
        return _d;
    }
    public void setLocation(int x, int y){
    }
    public void move(int dx, int dy){
     }
}

import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
public class GameBoard extends javax.swing.JPanel implements Mover{ 
   private Paddle _paddle1;
   private Paddle _paddle2;
   private Ball _ball;
   Boolean _boolean;
   private Timer _timer;
   private final int INTERVAL = 100;
   
   public GameBoard(){
       super();
       this.setBackground(new Color(150,250,200));
       this.setLayout(new FlowLayout());
       this.setPreferredSize(new Dimension(550,550));
       this.init();
       _paddle1 = new Paddle(200,500,15,60);
       _paddle2 = new Paddle(270,500,15,60);
       _ball = new Ball(this,150,400,20);
       _timer = new Timer(INTERVAL,this);
       _timer.start();
       //this.addMouseListener();
    }
     public void paint(Graphics g){ 
                    _ball.paint(g);
                    _paddle1.paint(g);
                    _paddle2.paint(g); 
                }
       public void move(){
           _ball.getX();
           _ball.getY();
           _ball.move(2,3);
           _paddle1.move(2,3);
           _paddle2.move(2,3);
           this.repaint();
        }
   }

[Michael Dunn]

perhaps the Ball class needs some code here

public void move(int dx, int dy){  
}  

[Krupa Patel]

It's still not working. please give me some hints.

     _ballX=5;
      _ballY=0;
public void move(int dx, int dy){
     int nextX = (int)this.getX()+_ballX;
     int nextY = (int)this.getY()+_ballY;
     this.setLocation(nextX, nextY);
     }

[Michael Dunn]

honestly, you will have to develop some debugging skills.

I pointed you to the empty method move(), so you added some code to move() which included this line:
this.setLocation(nextX, nextY);

now take a look at setLocation() - what do you expect it to do?