Re: how reapint JLabel

Knute Johnson <>
Sun, 14 Jun 2009 09:21:51 -0700
Rafal(sxat) wrote:

I can give you some skeleton for your application:
1/ put senFile in a Thread subclass
2/ create another Thread subclass like this:

class MonitorThread extends Thread {
public void run() {
    EventQueue.invokeLater(new Runnable() {
       // init on the EDT

I make it... .. it works quite well, but update progress I am running in
timer because
      Thread.sleep(100) resulted in a hung IE browser (applet)

I am setting delay on 1000 ms, but update but it does not perform the
equivalent time at 1 second and once every 5
how repaired it? Can anything changing priorities of threads?


package com.knutejohnson.components;

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

public class JTimeLabel extends JLabel implements ActionListener {
     private final SimpleDateFormat sdf;
     private final javax.swing.Timer timer = new

     public JTimeLabel(String text, int horizontalAlignment, String
pattern) {
         super(text, horizontalAlignment);
         sdf = new SimpleDateFormat(pattern);

     public JTimeLabel() {

     public JTimeLabel(String text) {

     public JTimeLabel(String text, int horizontalAlignment) {

     public void start() {

     public void stop() {

     public void actionPerformed(ActionEvent ae) {
         setText(sdf.format(new Date()));

     public static void main(String[] args) {
         EventQueue.invokeLater(new Runnable() {
             public void run() {
                 JFrame f = new JFrame();
                 JTimeLabel tl = new JTimeLabel();
                 tl.setFont(new Font("Arial",Font.BOLD,32));


Knute Johnson
email s/nospam/knute2009/

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