Flickering-Image -----Please Help

Question

Pls help meI have one hand image. I am drawing polygon above each finger.
Whenever the user clicks on particular finger, we are changing the color of that polygon.
We are changing the colors of the fingers(polygons) based on the database value when some functionalty is invoked. We are updating this color in PaintComponent of JPanel. The colors are flickering some time.
Please help.
Thanks in Advance.
code -------------
class ImagePanel extends JPanel {
Image img1,img2;
URL imageUrl1,imageUrl2;
     int x,y;
     public ImagePanel() {
create 10 polygons for 10 fingers
setLayout(null);
     this.addMouseListener(new panelMouseListener(this));
//this method creates the status panel
     void fillPoly() {
     //set the color of the fingers to green (when template is available).
          Graphics g=getGraphics();
          Graphics2D gg = (Graphics2D)g;
//fetching the records from database and depending on records changing the color to green yellow and selected finger to red
               if(fingerId==1)     {
                    gg.setColor(Color.red);
                    gg.fillPolygon(p[0]);
          } else if(fingerId==2) {
               gg.setColor(Color.red);
               gg.fillPolygon(p[1]);
public void paintComponent(Graphics gg) {
Graphics2D g = (Graphics2D)gg;
super.paintComponent(g); //paint background
int x1,y1;
     fillPoly();
//left hand
if(p[0].contains(x,y)) {
     //g.drawImage(img1, 0, 0, this);
     //g.drawImage(img2,110, 0, this);
     fingerId=1;
          msg="left pinkie finger";
          flag=true;
          showFingerImages(fingerId,flag);
          fillPoly();
     } else if(p[1].contains(x,y)) {
          //g.drawImage(img1, 0, 0, this);
          //g.drawImage(img2, 110, 0, this);
          fingerId=2;
     msg="left ring finger";
     flag=true;
     showFingerImages(fingerId,flag);
     }else {
          //g.drawImage(img1, 0, 0, this);
               //g.drawImage(img2, 110, 0, this);
               fingerId=0;
               msg="Please Select The Finger";
     g.drawImage(img1, 0, 0, this);
     g.drawImage(img2,110, 0, this);
class panelMouseListener extends MouseAdapter {
          ImagePanel ip;
          panelMouseListener(ImagePanel ip)
          { this.ip=ip;
     public void mousePressed(MouseEvent me) {
     x=me.getX();
     y=me.getY();
     //fillPoly();
     ip.repaint();

Answer 1

I'm not sure you model is the best but, nevermind, pass the graphics as argument of the method fillPoly :
class ImagePanel extends JPanel {
     Image img1,img2;
     URL imageUrl1,imageUrl2;
     int x,y;
     public ImagePanel() {
          setLayout(null);
          addMouseListener(new PanelMouseListener());
     //this method creates the status panel
     void fillPoly(Graphics2D g) {
          //set the color of the fingers to green (when template is available).
          //fetching the records from database and depending on records changing the color to green yellow and selected finger to red
          if(fingerId==1) {
               g.setColor(Color.red);
               g.fillPolygon(p[0]);
          else if(fingerId==2) {
               g.setColor(Color.red);
               g.fillPolygon(p[1]);
     public void paintComponent(Graphics gg) {
          Graphics2D g = (Graphics2D)gg;
          super.paintComponent(g); //paint background
          int x1,y1;
          fillPoly(g);
          //left hand
          if(p[0].contains(x,y)) {
               //g.drawImage(img1, 0, 0, this);
               //g.drawImage(img2,110, 0, this);
               fingerId=1;
               msg="left pinkie finger";
               flag=true;
               showFingerImages(fingerId,flag);
               fillPoly(g);
          else {
               if(p[1].contains(x,y)) {
                    //g.drawImage(img1, 0, 0, this);
                    //g.drawImage(img2, 110, 0, this);
                    fingerId=2;
                    msg="left ring finger";
                    flag=true;
                    showFingerImages(fingerId,flag);
               else {
                    //g.drawImage(img1, 0, 0, this);
                    //g.drawImage(img2, 110, 0, this);
                    fingerId=0;
                    msg="Please Select The Finger";
               g.drawImage(img1, 0, 0, this);
               g.drawImage(img2,110, 0, this);
     final class PanelMouseListener extends MouseAdapter {
          public void mousePressed(MouseEvent me) {
               x=me.getX();
               y=me.getY();
               repaint();
}I hope this helps,
Denis