Problem in repaint

Question

I drawn some rectangles.If one rectangle was clicked,the rectangles below it should move down..but for me,its not repainting.the old location as well as the new location was there when i click the rectangle...
import javax.swing.JApplet;
* To change this template, choose Tools | Templates
* and open the template in the editor.
import java.awt.event.MouseEvent;
import javax.swing.*;
import java.awt.*;
import java.awt.Graphics;
import java.awt.Rectangle;
import java.awt.Rectangle;
import java.awt.event.MouseListener;
import java.util.ArrayList;
* @author 8563
public class TestTree extends JApplet
    @Override
    public void init()
        Container con = getContentPane();
        con.setLayout(new BorderLayout());
        setPreferredSize(new Dimension(300, 300));
        JScrollPane scroll = new JScrollPane();
        getContentPane().add(scroll, BorderLayout.CENTER);
        scroll.setViewportView(new ImagePanel());
    private class ImagePanel extends JPanel implements MouseListener {
        ImagePanel image;
        Rectangle rext = new Rectangle(40, 40, 30, 15);
        int[] x = {75, 95, 115, 130};
        int[] width = {15, 15, 15, 15};
        boolean selected1 = false;
        int count;
        Rectangle [] rects;
        Rectangle [] rectangles;
        ArrayList<Rectangle> hlp;
        public ImagePanel()
            prepareData();
            this.addMouseListener(this);
        @Override
        protected void paintComponent(Graphics g)
            Graphics2D g2 = (Graphics2D) g;
            g2.draw(rext);
            drawRect(g2);
        public void prepareData()
            int x = 75;
            int y = 85;
            int w = 20;
            int h = 15;
            hlp = new ArrayList<Rectangle>();
            for (int i = 0; i < 4; i++) {
                hlp.add(new Rectangle(x, y, w, h));
                y += 25;
            rectangles = hlp.toArray(new Rectangle[hlp.size()]);
       public void drawRect(Graphics g)
            Graphics2D g2 = (Graphics2D) g;
            for (Rectangle r : rectangles)
                g2.draw(r);
                //repaint();
        public void mouseClicked(MouseEvent e)
            Point mse_clk = e.getPoint();
            int count_incr = count+1;
            int y = 150;
            for(int i=count_incr;i<rectangles.length;i++)
                if(selected1)
                    rectangles.setLocation(rectangles[i].x,rectangles[i].y+20);
// repaint();
repaint();
public void mousePressed(MouseEvent e)
Point pres_point = e.getPoint();
for (int i=0;i<rectangles.length;i++)
if(rectangles[i].contains(pres_point))
selected1 = true;
count = i;
break;
public void mouseReleased(MouseEvent e)
public void mouseEntered(MouseEvent e)
public void mouseExited(MouseEvent e)
public static void main(String[] args) {
JApplet applet = new TestTree();
JFrame f = new JFrame();
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.add(applet);
f.setSize(400, 400);
f.setLocationRelativeTo(null);
applet.init();
f.setVisible(true);

Answer 1

        @Override
        protected void paintComponent(Graphics g)
            // paint the background..
            super.paintComponent(g);
            Graphics2D g2 = (Graphics2D) g;
            g2.draw(rext);
            drawRect(g2);
        }