JMenu and Paint Problem

Question

Hello,
I have been teaching my self Java and I have become quite proficient with it, however, I have a problem that I can not fix, or get around.
I have a JMenuBar in a JFrame with some JMenu�s containing JMenuItems. I also have a JPanel that I draw inside (I Know that is probably not the wisest way to draw things, but it was the way I first learned to draw and now my program is too big and it is not worth while to change). Any ways, I draw some graphics inside of this JPanel.
The menu items change the drawings; this is done by repainting the JPanel Graphic. However, when I click one of the menu items, the JPanel paints but there is a residual of the JMenu in the background that will not disappear.
The menu is closed and if I open and then close the menu the residual goes away.
=> I would like to know how to prevent the residual from appearing?
The problem also occurs when I use the popup menus outside of the JmenuBar.
What I think is wrong.
I think my problem is with the repaint. I don�t think the JFrame is repainting. I think I am simply repainting all the components in the JFrame but not the JFrame itself and thus the residual is not cleared from the JFrame. I don�t know how to fix this but I believe that is the problem because when I minimize the JFrame then Maximize it the JFrame will not paint, and I can see right through the JFrame, but the components paint fine.
Sorry for the long question, but I don�t know what would be helpful.
Any advice would be appreciated,
Thank you
Seraj

Answer 1

// This is the code that listens for the menu item
private void RBmmActionPerformed(java.awt.event.ActionEvent evt) {                                    
        calc.setIN(false);
        updateData();                    // updates some data
        paint2();                           // my special draw fuction shown below
    public void paint2()                          // this the special paint that draws on the JPanel
        Graphics page = jPanel1.getGraphics();
        if(start_end)
            myPic.draw(page);
        else
            page.setColor(Color.WHITE);
            page.fillRect((int)(OFFSET.getX()), (int)(OFFSET.getY()), (int)(R_BOUND-OFFSET.getX()), (int)(L_BOUND-OFFSET.getY()));
        repaint();             
public void paint(Graphics g)               // this is the regular paint methode
        MessageHandler();
        ATD_age.repaint();
        StanderdCal.repaint();
        ChildSRF.repaint();
        MessageArea.repaint();
    }I hope that is helpful