Disappearing of button

Question

Hello friends,
I am trying to design a program that consists of a jFrame that contains the fallowing components.
1. A jPanel, that i will be using for plotting online voltage graph.
2. Two jButton for starting and stopping the graph.
Now the problem is whenever i make use of 'public void paint(Graphics g) {}' method declaration in my class that extends jFrame class, On executing the two buttons disappear at the start and appears when i move the mouse pointer on its location. Please tell me suitable solution for this problem.
thanks and regards,
Prasad

Answer 1

To do custom rendering, it is generally regarded as a bad idea to subclass JFrame
and override paint. Instead subclass JPanel and
override it's paintComponent method like this:
public class VoltageGraphView extends JPanel {
    protected void paintComponent(Graphics g) {
        super.paintComponent(g); //prepares background
        //do you drawing here.
    }Now that you have a component that does the drawing, your layout will
place it together with your buttons on your JFrame's content pane. Done!