Re: JTextField.paintComponent

Knute Johnson <>
Thu, 21 May 2009 20:21:44 -0700
Aaron Fude wrote:


If my overridden paintComponent starts with
  public void paintComponent(Graphics g) {

should that draw the right background color. I thought yes, but I
discovered no and I have to do?

    g.fillRect(0, 0, getWidth(), getHeight());

Am I doing the right thing or missing something?

On Windows, a JTextField is opaque by default. If I create one and set
its background color, whether or not I override paintComponent() it
draws the background color unless I leave out the super.paintComponent().

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class test extends JFrame {
     public test() {
         setLayout(new GridBagLayout());
         JTextField tf = new JTextField("Hello World"); /* {
             public void paintComponent(Graphics g) {

     public static void main(String[] args) {
         new test();

Maybe you could write an SSCCE to demonstrate your problem.


Knute Johnson
email s/nospam/knute2009/

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