JButton Position

Question

Hi guys. I am very new to Java and I am working on my assignment...
I am trying to set the location of a JButton but it seems that the setLocation Method doesnt work...
this is my code...
import java.awt.*;
import java.awt.geom.*;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Random;
import java.awt.Polygon;
import javax.imageio.ImageIO;
import javax.swing.*;
* @author Donna Ng Wing Yu
public class MP3 {
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
MyFrame frame = new MyFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
//A frame that contains a panel with drawings
class MyFrame extends JFrame {
public MyFrame() {
setTitle("My First Game in Java!");
setSize(DEFAULT_WIDTH, DEFAULT_HEIGHT);
GameComponent component = new GameComponent();
// add panel to frame
add(component);
public static final int DEFAULT_WIDTH = 531;
public static final int DEFAULT_HEIGHT = 460;
//A component
class GameComponent extends JPanel {
     public GameComponent(){
          /*Import the background*/
          String filename = "background.jpg";
          try{
               image = ImageIO.read(new File(filename));
          catch (IOException e){
               e.printStackTrace();
          /*this J Component contains lots of Hexagons*/
          Hexagons = new ArrayList<Hexagons>();
          cx = 120; //x-coordinate of the first hexagon of column 1
          cy = 66; //y-coordinate of the first hexagon of column 1
          //Creating the first column of hexagons
          Color lastColor = null;
          for(int i = 0; i < 8;i++){
               Color current = this.RandColorGenerator();
               while(current.equals(lastColor)){
                    current = this.RandColorGenerator();
               Hexagons hex = new Hexagons(cx,cy,current);
               Hexagons.add(hex);
               cy += 36;
               lastColor = current;
          lastColor = null;
          //Creating the second column of hexagons
          cx +=30;
          cy = 48;
          for(int i = 0; i < 9;i++){
               Color current = this.RandColorGenerator();
               while(current.equals(lastColor)){
                    current = this.RandColorGenerator();
               Hexagons hex = new Hexagons(cx,cy,current);
               Hexagons.add(hex);
               cy += 36;
               lastColor = current;
          lastColor = null;
          //Creating the third column of hexagons
          cx +=30;
          cy = 66;
          for(int i = 0; i < 8;i++){
               Color current = this.RandColorGenerator();
               while(current.equals(lastColor)){
                    current = this.RandColorGenerator();
               Hexagons hex = new Hexagons(cx,cy,current);
               Hexagons.add(hex);
               cy += 36;
               lastColor = current;
          lastColor = null;
          //Creating the fourth column of hexagons
          cx +=30;
          cy = 48;
          for(int i = 0; i < 9;i++){
               Color current = this.RandColorGenerator();
               while(current.equals(lastColor)){
                    current = this.RandColorGenerator();
               Hexagons hex = new Hexagons(cx,cy,current);
               Hexagons.add(hex);
               cy += 36;
               lastColor = current;
          lastColor = null;
          //Creating the fifth column of hexagons
          cx +=30;
          cy = 66;
          for(int i = 0; i < 8;i++){
               Color current = this.RandColorGenerator();
               while(current.equals(lastColor)){
                    current = this.RandColorGenerator();
               Hexagons hex = new Hexagons(cx,cy,current);
               Hexagons.add(hex);
               cy += 36;
               lastColor = current;
          lastColor = null;
          //Creating the sixth column of hexagons
          cx +=30;
          cy = 48;
          for(int i = 0; i < 9;i++){
               Color current = this.RandColorGenerator();
               while(current.equals(lastColor)){
                    current = this.RandColorGenerator();
               Hexagons hex = new Hexagons(cx,cy,current);
               Hexagons.add(hex);
               cy += 36;
               lastColor = current;
          lastColor = null;
          //Creating the seventh column of hexagons
          cx +=30;
          cy = 66;
          for(int i = 0; i < 8;i++){
               Color current = this.RandColorGenerator();
               while(current.equals(lastColor)){
                    current = this.RandColorGenerator();
               Hexagons hex = new Hexagons(cx,cy,current);
               Hexagons.add(hex);
               cy += 36;
               lastColor = current;
          lastColor = null;
          //Creating the eigth column of hexagons
          cx +=30;
          cy = 48;
          for(int i = 0; i < 9;i++){
               Color current = this.RandColorGenerator();
               while(current.equals(lastColor)){
                    current = this.RandColorGenerator();
               Hexagons hex = new Hexagons(cx,cy,current);
               Hexagons.add(hex);
               cy += 36;
               lastColor = current;
          lastColor = null;
          //Creating the ninth column of hexagons
          cx +=30;
          cy = 66;
          for(int i = 0; i < 8;i++){
               Color current = this.RandColorGenerator();
               while(current.equals(lastColor)){
                    current = this.RandColorGenerator();
               Hexagons hex = new Hexagons(cx,cy,current);
               Hexagons.add(hex);
               cy += 36;
               lastColor = current;
          lastColor = null;
          //Creating the last column of hexagons
          cx +=30;
          cy = 48;
          for(int i = 0; i < 9;i++){
               Color current = this.RandColorGenerator();
               while(current.equals(lastColor)){
                    current = this.RandColorGenerator();
               Hexagons hex = new Hexagons(cx,cy,current);
               Hexagons.add(hex);
               cy += 36;
               lastColor = current;
          System.out.println(Hexagons.size());
          for(Hexagons hex:Hexagons){
               System.out.println("X: "+ hex.getCentre().getX()+",Y: "+hex.getCentre().getY());
          JButton RotationButton = new JButton(new ImageIcon("right_rotate.jpg"));
          add(RotationButton);
public void paintComponent(Graphics g){
     super.paintComponents(g);
     Graphics2D g2 = (Graphics2D) g;
     /*Insert the background Image*/
     g.drawImage(image, 0, 0, null);
     /*Draw all hexagons and fill the hexagons with colours*/
     for(Hexagons hex :Hexagons){
          g2.setPaint(hex.getColor());
          g2.fill(hex);
          g2.setPaint(Color.BLACK);
          g2.draw(hex);
public Color RandColorGenerator(){
     Random numGen = new Random();
     Color LuckyColor;
     Color[] myColors = {Color.RED, Color.BLUE, Color.ORANGE, Color.GREEN,new Color(186,11,195)};
     return myColors[numGen.nextInt(5)];
private ArrayList<Hexagons> Hexagons;
private Image image;
private int cx ;
private int cy;
class Hexagons extends Polygon{
     public Hexagons(double x, double y, Color color){
          super();
          this.centre = new Point2D.Double(x,y);
          this.color = color;
          for (int i = 0; i < 6; i++)
               this.addPoint((int) (centre.getX() + 20 * Math.cos(i * 2 * Math.PI / 6)),(int) (centre.getY() + 20 * Math.sin(i * 2 * Math.PI / 6)));
     public Color getColor(){
          return this.color;
     public Point2D getCentre(){
          return centre;
     private static final double radius = 20;
     private Point2D centre;
     private Color color;
}

Answer 1

Read the "Welcome to the new home" posting at the top of the forum to learn how to use the "code tags" when posting code. You can then edit your posting to fix the code. Then maybe someone will look at the code.
But first you should read the section from the Swing tutorial on [url http://download.oracle.com/javase/tutorial/uiswing/layout/index.html]Using Layout Managers. There should be no reason to use the setLocation() method.
For more help create a [url http://sscce.org]SSCCE, that demonstrates the incorrect behaviour.