Buttons are not displayed for the first time when drawImage method is used

Question

Hi
In my swing window 2 buttons are there and when clicking these buttons, it should display an image . The two buttons are displayed at the first time and I can click on it . While clicking a button , the corresponding image is also got displayed. [ I am using drawImage() function for it] But what the problem is, then the two buttons are not displayed and it will be displayed again when the mouse moves along the position of these two buttons. And this problem occurs only at the first time..When they are on the window on a second time, they won't vanish when the image is displayed when clicking it. Is this the problem with paint() method?. I am using start() method also.
Please help me!
Thank You

Answer 1

Hi
This is not my exact program, that has a large no: of code. So I am putting here a sample one. One thing I would like to point out is that , I can see the buttons at the time of loading the applet and suddenly it vanishes and the image is drawn. Then if I move the mouse along the position of these buttons , they got displayed.
import java.awt.*;
import javax.swing.*;
/*<applet code = MyClass width = 500 height = 500>
</applet>
public class MyClass extends JApplet
Image img;
JButton b1,b2;
Container cp;
Canvas1 cv;
class Canvas1 extends JPanel
public void paint(Graphics g)
super.paint(g);
g.setColor(Color.black);
g.fillRect(0,0,500,500);
img = getImage(getCodeBase(),"image1.jpeg");
g.drawImage(img,20,20,this);
public void start()
cv = new Canvas1();
cv.setBounds(0,0,500,500);
cp.add(cv);
public void init()
setLayout(null);
cp = getContentPane();
b1 = new JButton("Button1");
b1.setBounds(1,1,100,30);
cp.add(b1);
b2 = new JButton("Button2");
b2.setBounds(200,1,100,30);
cp.add(b2);
It would be very helpful to me if you could fix the problem.
Thank You.