Programming problem

I would like to make an object follow a path in java?
Any hints/help? :(emo):

Code:

---

import java.io.*;
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
public  class Roll extends JPanel implements ActionListener{
  int width = 700; int height = 500;
  Timer ticker = new Timer(20,this); // 20 ms between signals
  double x = 0; double y = 250;double r=50;double h;
   
  public Roll(){
    setPreferredSize(new Dimension(width,height));
    ticker.start();
  }
 
  public void paintComponent(Graphics g){
    super.paintComponent(g);
    g.fillOval((int)x,(int)y,50,50);
  }
 public int i=0;
  public void actionPerformed(ActionEvent e){
    if (e.getSource() == ticker) {
      x += 2;
      y-=2;
      h=400-y;
//    this.getWidth/Height()();
  //    this.getx();
    //  this.gety();
      repaint();
    }
  }}

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Here's the driver

Code:

---

import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
public class RollDriver{
 
  public static void main(String[] args){
    DisplayWindow d = new DisplayWindow();
    Roll p = new Roll();
    //Color blue = new Color();
    d.addPanel(p);
    d.showFrame();
    //System.out.print(p.getX());
    //System.out.print(p.getY());
    //d.setBackGround(blue);
  }
}

---

Code:

---

import java.awt.*;
import javax.swing.*;

public class DisplayWindow extends JFrame {
    private final static int width_ = 800;
    private final static int height_ = 400;
    private final static String defaultDisplay_ = "Default";

    private Container c;

    public DisplayWindow() {
        super(defaultDisplay_);
        c = this.getContentPane();
    }

    public DisplayWindow(String title) {
        super(title);
        c = this.getContentPane();
    }

    public void addPanel(JPanel p) {
        c.add(p);
    }

    public void addPanel(JPanel p, boolean useDefault) {
        if(useDefault)
          p.setPreferredSize(new Dimension(width_, height_));
        c.add(p);
    }

    public void showFrame() {
        this.pack();
        this.setVisible(true);
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }

}

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1. What is this DisplayWindow class that you're using?
2. You already appear to have code that uses a Swing Timer for an animation. Why not simply adapt this code for your needs?

Please go through the Forum Rules, particularly the third paragraph.

db

OK, I guess you've chosen to ignore my suggestions. If one confuses you, rather than ignore it, better to ask for clarification.