Timer 1 « Development « Java Swing Q&A





1. ExecutorService vs Swing Timer    stackoverflow.com

I've been reading Filthy Rich Clients lately and noticed that, although the version of Java is 6, there is no mention of the Concurrent Framework. So, they talk about ...

2. Modifying a Swing Timer's Delay during Runtime    stackoverflow.com

I'm developing a Queue simulation, using a Swing Timer to dequeue objects after certain amounts of time. The interval is determined by peeking at the next object in the queue, getting ...

3. Java Swing Timer    stackoverflow.com


    ActionListener taskPerformer = new ActionListener() {
     public void actionPerformed(ActionEvent evt) {
         //...Perform a task...

  ...

4. How do you create a javax.swing.Timer that fires immediately, then every t milliseconds?    stackoverflow.com

Right now, I have code that looks something like this:

Timer timer = new javax.swing.Timer(5000, myActionEvent);
According to what I'm seeing (and the Javadocs for the Timer class), the timer will ...

5. Swing Timer expires earlier than expected    stackoverflow.com

I have a module that sets Swing Timer to wake up after 3 minutes and I see that it is fired after less than 2 minutes. I have to mention that while ...

6. Cant get Java Timer working (javax.swing.Timer)    stackoverflow.com

So I'm trying to learn how the javax.swing.Timer works, but I can't get it to do a simple operation. Basically all I'm trying to do is have the system print ...

7. Can it be done in a more elegant way with the Swing Timer?    stackoverflow.com

Bellow is the code for the simplest GUI countdown. Can the same be done in a shorter and more elegant way with the usage of the Swing timer?

import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.SwingUtilities;

public ...

8. Javax Swing Timer Help    stackoverflow.com

I am having some problems concerning starting javax.swing.Timer after a mouse click. I want to start the timer to perform some animation after the user clicks on a button but it ...

9. call a method at a specified time    stackoverflow.com

How can I call a method every n seconds? I want to do a slideshow with Swing and CardLayout and every n seconds it must show a different image calling a different method ...





10. swing: UI for a countdown timer    stackoverflow.com

I need a variable countdown timer for between 1-10 seconds, that can be stopped and restarted. What's a good set of UI elements to use for this? I need something intuitive ...

11. Java javax.swing.Timer - freezing my GUI. Solution?    stackoverflow.com

I have a task running using javax.swing.Timer. It executes once every few minutes. The task takes a second or two, and it is freezing my GUI. What can I do to fix ...

12. Swing Timer, how to pause and resume it?    stackoverflow.com

i have a timer that counts the spent time and other calculations, but i need when i click on pause button the timer to pause, and then resume. How do i ...

13. Changing Delay in Java Timer    stackoverflow.com

I'm trying to edit my timer so that every 25 times repaint() is called the timer firing speed cuts in half. So the first 25 times it's 500; then the next ...

14. TimerTasks in Swing    stackoverflow.com

I'm trying to write a message acknowledgement application where I need to: a) Add every new message on a message queue. Just using an Arraylist for creating a message queue. b) Notify a ...

15. java swing timer...sigh    stackoverflow.com

I am trying to compensate for frame rate inconsistencies using the swing timer. I tried:


class TimerListener implements ActionListener {
   public void actionPerformed(ActionEvent e){
       ...

16. JAVA making time to decrease to zero by swing timer    stackoverflow.com

I have a milliseconds and i convert it hh:mm:ss now i want to make it to automatically decrease value overtime.. something like countdown timer for example, when user sees it, 2:11 0 ...





17. Negative Delays in Java Swing Timers    stackoverflow.com

I just came across this in some code, and I'm rather confused.

 timer = new Timer(-10, new
         ActionListener()
      ...

18. Scheduled tasks (Timers) in Swing    stackoverflow.com

A GUI using Swing, must update part of its UI from a every 5 seconds. (output.setPage(url)) The code is running in a timer, but on every update, the GUI hangs. How do I ...

19. Abstract class with Swing Timer    stackoverflow.com

I have an abstract class as follows:

abstract class Grapher implements Runnable{
  ... member variables...
  Timer timer;
  boolean Done;

   public void run(){
      ...

20. Microbreaks - java swing tool    stackoverflow.com

I have been using several Microbreaks software solutions. And all of them are overkill and/or don't do exactly what I want. I found that taking break every 20 minutes to ...

21. Implementing automatic reminders in java    stackoverflow.com

I have to remind the user about schedules which he did previously in java. I know i can do with timers but how do i do tat ? actually i need ...

22. Java Swing: Set starting time on timer and loop it    stackoverflow.com

i'm using this example on leepoint.net with this code the timer starts on real time seconds, but i was wondering how i can make it start at 1 second and then ...

23. Java Swing Timer; Create a loop; count to 4 Twice    stackoverflow.com

With the code below, the timer counts 4 seconds, and if it reaches 1, 'Hello World!' Get's printed.
How can i make it so that the, timer counts to 4 TWICE and print Hello ...

24. Issues with Swing timers    stackoverflow.com

I have 3 timers running on my application which takes care of different action. Timer 1 will deals with automatic logout of the application, timer 2 deals with updating a table, ...

25. Stuck on Design    stackoverflow.com

I have a small GUI java program I'm working on but designing how the pieces should work together is frustrating me. Basically what I need to do is draw a "car" ...

26. Need Help Getting A Simple Stop-Watch Working?    stackoverflow.com

So I am experimenting with a little stop-watch object and I can't figure out why it isn't working. I have a gui with the following; timeinfield is a jtextfield which the user ...

27. java swing timer not going off    stackoverflow.com

I can't seem to get this timer to go off. the program compiles and from my understanding this should ping every 1000ms or 1 second and perform the lines in the ...

28. Use Java Full Screen Exclusive Mode with Swing Timer    stackoverflow.com

Good day! I wanted use a standart Swing Timer with Full Screen Exclusive Mode. To this effect I applied a SwingWorker to control the event when graphic mode should be set. All ...

29. Redundant Condition    stackoverflow.com

I have a problem in this block of code i saw in oracles site can someone explain it for me?

Action updateCursorAction = new AbstractAction() {
    boolean shouldDraw = false;
 ...

30. How do I make this java for loop pause for 1/2 a second between each iteration?    stackoverflow.com

private class MultipleGensListener implements ActionListener
   {
    public void actionPerformed(ActionEvent e)
        {
         ...

31. How to interchange between 2 timers? in Java GUI    stackoverflow.com

Okay, so basically what I'm trying to create a timer that counts up and down. I need the program to activate just one timer at any one time. There are two ...

32. How to close a Java GUI application in x seconds?    stackoverflow.com

I need some help regarding the Java GUI I developed using NetBeans. I want the functionality where the user clicks on a button to exit the application. Instead of immediately exiting, I ...

33. How to stop the timer function after the object has been shot?    stackoverflow.com

I am making a simple target shooting game.I have a countdownTimer inside the label and an object that blinks in a random position inside the panel. Every time I click on ...

34. Object oriented programming - question about design and accessing relevant data    stackoverflow.com

Consider you have the following code in a Timer: It's main goal is to count down the seconds and to show it on GUI, which is Swing based. The Timer is ...

35. Swing timer persistence after main method finishes    stackoverflow.com

I am trying to create a program to perform a simple task and produce an output every x seconds. I also want the program to run until I decide to manually ...

36. Swing timer - time fluctuating    stackoverflow.com

I am using a Swing Timer in my game but when the game is running it appears to have moments when it runs smoothly and moments when it slows down. Why ...

37. Trouble with java timer?    stackoverflow.com

After advice from another thread, I've been playing with the timer class without much joy. Heres my code:

 public void buttonImageReveal(ActionEvent e){

        Timer gameTimer ...

38. count down timer    stackoverflow.com

I didnt find some easy java swing tutorial of count down timer in java so I decided to implement it to my own way:

javax.swing.Timer t = new javax.swing.Timer(1000, new ...

39. swing timer doesn't work properly    stackoverflow.com

hi there i am working on a project(java memory game) and first of all i am trying to understand that how swing timer works. firstly, i my main class implements ActionListener ...

40. How to pause Java Swing Timer?    stackoverflow.com

I want to stop Timer at some point and then resume it from the point it was paused at. Methods stop(), start() won't work. Is there function for pausing Timer and then ...

41. Stop() Timer in currently executing    stackoverflow.com

I saw in another question regarding swing Timer API and your methods, preference stop(); my question is, is it possible to stop (cancel if util.timer) a timer when it's currently executing? I have ...

42. Timer Won't Fire Correctly    stackoverflow.com

I'm using a Timer to toggle a boolean, but instead of firing every 250ms like it's supposed to, it fires as fast as it can. Here is my code:

package com.cgp.tetris;

import java.awt.Graphics;
import ...

43. Timer    coderanch.com

Does someone know how to do the birthday reminder for application. The idea is a popup reminder/alert box will appear if the particular person birth date same with today date or earlier in my record. Really need you all ideas and comments. If can you all can provides a sample code for me. Thank you in advance!

44. javax.swing.Timer    coderanch.com

I'm having a problem with my timer not firing after 12 midnight?? Any ideas??? I'm using it in a OS4690 environment? The timer is NOT dead, and it is running, but it will not fire after midnight randomly. I got 4 or 5 machines running the same code. 25% of the time, on one of the machines the code will not ...

45. add/remove components by timer    coderanch.com

Hello Coders! I need to implements a functionality that resembles to Components.setToolTipText(). My GUI consisting of an Image, textfield and a button. When the button pressed I want the textfields input to be shown on a balloon that attached to the image and disappeared after a few seconds. Ill implement it by dynamically adding the balloon in response to buttons ...

46. Timer    coderanch.com

hello Everybody... I need to put a timer on my GUI. How do I do it? Can somebody write down the code so that i can add it into my project directly.... and give me suggestions accordingly as how to add the code into my project... I know I am asking too much.. but please help me.. I am in desperate ...

47. Audio flag of timer    coderanch.com

If have a button that plays a variety of short audio clips. It is working OK except that if I click on the play button twice in a row. I expect it to play the audio two times. Instead it plays only a snipet, with the first click and for the second click it plays the entire audio clip. This is ...

48. how to stop this timer?    coderanch.com

This timer triggers a progress bar. The goal is to stop the timer (and therefore the progress bar) when a label changes its text. However, the timer goes on for ages and the progress bar keeps going until it reaches 100%. The timer never stops, it just that the progress bar can't go any further. In other words, 1. How do ...

49. Swing Timers - Where am I going wrong?    coderanch.com

Hi there The background to the task is that I have a class (FileHandler) that collects a group of files from the filesystem, compresses and encrypts them before connecting to a server and transmitting the files. This class is a Runnable class and I'm calling it like a Thread. It's doing a lot of work so it takes a while. Now ...

50. how to use timer?    coderanch.com

Here's something to play around with import java.awt.*; import javax.swing.*; import java.util.*; import java.text.*; class ClockDigital extends JLabel { SimpleDateFormat sdf = new SimpleDateFormat("dd-MMM-yy HH:mm:ss"); public ClockDigital() { startTheClock(); } private void startTheClock() { final java.util.Timer tmr = new java.util.Timer(); tmr.scheduleAtFixedRate(new TimerTask() { Calendar cal; public void run() { cal = Calendar.getInstance(); setText(sdf.format(cal.getTime())); } },0,1000); } public String setFinish(int minutes) { ...

51. About Timer..    coderanch.com

52. Swing Timer    coderanch.com

Hi- I'm using a Swing Timer to run an animation in an applet. In every cycle a calculation is done and a figure drawn on a BufferedImage, and that image is drawn to my JPanel subclass via PaintComponent, via repaint(). The timing is sometimes extremeley ragged. I've measured elapsed time at various points in the cycle by printing out Date.getTime(), and ...

53. How do I setup a Countdown Timer in a Swing App    coderanch.com

Hi, I'm working on a Test Delivery Engine where I populate Questions & Answer Options from an Access Database. It's supposed to be an exam preparation tool. I have the following issues that I would like you guys to help me out with. 1. I need to track correct and wrong answers without storing them in the DB. The DB is ...

54. Timers/Progress problem    coderanch.com

import java.awt.*; import java.awt.event.*; import javax.swing.*; import javax.swing.Timer; public class TPMTest { private LongTask longTask; private TPM monitor; private JPanel panel; private JLabel taskCountLabel; public TPMTest() { longTask = new LongTask(); panel = new JPanel(new BorderLayout()); JFrame f = new JFrame(); f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); f.getContentPane().add(getStartPanel(), "North"); f.getContentPane().add(panel); f.getContentPane().add(getLabelPanel(), "South"); f.setSize(400,300); f.setLocation(200,200); f.setVisible(true); } private JPanel getStartPanel() { final JButton start = new JButton("start ...

55. Java Timer    coderanch.com

56. Timer wrong constructor?    coderanch.com

import javax.swing.JApplet; import java.awt.Graphics; import java.awt.Point; import javax.swing.Timer; import java.awt.event.*; public class Jeu extends JApplet implements ActionListener, KeyListener, MouseListener { int taille=10; int score=0; Point position=new Point(50,50); Timer minuteur; public void init() { addMouseListener(this); addKeyListener(this); } public void start() { minuteur=new Timer(100,this); minuteur.start(); } public void actionPerformed(ActionEvent evt) {repaint();} public void keyReleased(KeyEvent e){} public void keyTyped(KeyEvent e) {} public void keyPressed(KeyEvent ...

57. Timers    coderanch.com

58. javax.swing.Timer    coderanch.com

import java.awt.*; import java.awt.event.*; import javax.swing.*; public class TimerTest implements ActionListener { JTextField textField; int count; public TimerTest() { textField = new JTextField(); count = 0; new javax.swing.Timer(1000, this).start(); } public void actionPerformed(ActionEvent e) { String s = ""; if(count++ % 2 == 0) s = "hello world"; textField.setText(s); } public static void main(String[] args) { JFrame f = new JFrame(); ...

59. Two Timer classes?    coderanch.com

60. Timer Trouble    coderanch.com

no, outside the constructor is javax.swing.Timer timer; then inside is timer=... My code is 3000 lines long, and the GUI part is confusing too. But basically when I call timer.start() after pressing the start button on the menu... the classes' actionPerformed method calls a method which uses timer.start(), and that works fine. But when the mouse is realised and its the ...

61. Timer Trouble (again)    coderanch.com

I've located the source of my earlier timer problem. The test code shown below works fine: import java.awt.*; import java.awt.event.*; import javax.swing.*; class Testing extends JFrame implements MouseListener { javax.swing.Timer timer; public Testing() { setDefaultCloseOperation(EXIT_ON_CLOSE); setLocation(400,300); JPanel p = new JPanel(); JButton btn = new JButton("Start Timer"); addMouseListener(this); btn.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent ae) { timer.start(); } }); p.add(btn); getContentPane().add(p); ...

62. Timer Trouble (aaaargh)    coderanch.com

Hi, I've been fiddling around with some code written by Michael Dunn. The timer is set to display "1 second has passed" when it times out. As you can see in class XYZ, there is an invokeLater() method, this is because of the call to repaint() in the mouseReleased method (Want the GUI to repaint, before continuing). When clicking the start ...

63. Confused, trying to work a timer loop...    coderanch.com

I've edited my question as I'm making progress. Now I'm lost trying to reset the count and stop the timer when it says "testing . . . 0 1 2" everything else is working properly.. public void actionPerformed(ActionEvent e) { count = 0; text = "testing . . ."; line.setText(text); Timer t = new Timer(timerInterval, new ActionListener () { public void ...

64. How to make a reusable Timer ?    coderanch.com

65. CountDown timer in java swings    coderanch.com

You haven't got very far, have you? Work out where you can get the time from, particularly since you may be able to get it from the System of your computer. Work out how to calculate time left in minutes and seconds. I am a bit surprised you are using 500 for your Timer rather than 1000! Then let's see what ...

66. Timer in java swings    coderanch.com

> I have to know that Timer can be used only in case of any action-event ie., on clicking of any button. that statement is wrong, unless it's just a translation hiccup. Timer uses an actionListener/actionEvent to perform what it has to do, at a given interval. it does not need to be triggered by the actionEvent of a button, but ...

67. javax.swing.Timer    coderanch.com

I'm having a problem with my timer not firing after 12 midnight?? Any ideas??? I'm using it in a OS4690 environment? The timer is NOT dead, and it is running, but it will not fire after midnight randomly. I got 4 or 5 machines running the same code. 25% of the time, on one of the machines the code will not ...

68. java swing Timers    coderanch.com

I used Java swing timers in my java app. Whenever I run the application on windows it runs fine. But When I run the app on Linux it tries to find X server and fails. Problem is fixed by exporting the disply on Linux but is there way to fix this issue programatically? Thanks, Akhtar

69. Can timer Update swing Widgets , or some tips needed.    coderanch.com

Hi Thank you for reading my post. Here is the problem : I have a timer , and i want it to update my jlabel in a count Down manner , so the folowing code showd do this job ? I write them in a button event , but it just run one time and never my jlable text reaches more ...

71. using the Timer class in javax.swing    coderanch.com

Hello all. I have a problem with the Timer class in javax.swing. Theoretically, this class is supposed to allow for the use of a background thread. For the program I am working on, I set up a Timer that is supposed to count up until it reaches some user-set variable. While this is counting, the program (using a GUI in swing) ...

72. Swing Timer    coderanch.com

73. help with Java timer    coderanch.com

Hello, Thanks for the suggestions. Like I said, I was trying to make a stopwatch/timer program. The stopwatch works well, there are no problems with that. With the timer, I am using the same logic and a copy of the same actionPerformed method. It seems to be working but it seems to be going negative. Meaning if I start the timer ...

74. Creating Timer    coderanch.com

76. Timer problem    coderanch.com

Here is my problem I have created a timer using the following code Timer t = new Timer(1000, new TimerListener()); t.setRepeats(false); t.setInitialDelay(0); The problem is that when this bit of code runs the ActionListener does not automatically run, what does happen however is that the listener I am currently in (ButtonListener) finishes and then the program enters timer listener. Could someone ...

77. looking for a timer component    coderanch.com

Hi. I want to ask before I start building one because this is not my main priority and time costs money. I searched on google but not found anything . So.. Is there a swing timer component. I need to be able to start, stop, reset the timer. the format should be hh:mm:ss Thank you

78. Passing a time to a Swing Timer    coderanch.com

79. Java Timers    coderanch.com

Hi, I know how to setup timers and use them to refresh labels etc. What i am struggling to figure out is how to how refresh a entity that is being returned. What i have is JTabs, which calls other functions to create JPanels and add it to the tabs. I have a JPanel full of labels, which is displaying data ...

80. Timers    coderanch.com

Hi, I have used two timers in my system but since i have implemented this two timers, i am getting random error messages thrown from any part of the systemn this didnt happen before the timer were implemented. So i suspecting that at some point both timers are interfering with eachother and therefore causing this problems. Is there anyway in Java ...

81. How to use multiple timer classes in swings    java-forums.org

public MoveImage(){ Timer timer = new Timer(1000,this); timer.start(); } public void actionPerformed(ActionEvent e){ cursor.move();//here i want to give different speed to my cursor image.. how to do that. image.move(); } so from the above line i want to give different time to cursor using timer class alone... pls help me regarding this....

82. Swing Timers Issue.    java-forums.org

I'd make the Timer a class variable, not a local variable (you may already be doing this). Then in the action listener for the button check to see if the timer is null and if not, if it is running (the Timer API will tell you the method that will do this). I'd do this in an if block, and only ...

83. Timer on swing    java-forums.org

hallo all.. i try use looping every minuts execute some method, to delay that i use thread.sleep() but if i click the button (jButton3 as an example below), other component can not execute that looping, how can use timer every some minuts do the method? private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) { int a = 0; do { try { Thread.sleep(200); } catch ...

84. How to use a timer to count up or down.    java-forums.org

Okay So i want to change the background of one button from default to red. When the button is pressed. Then after 1 minute I want to turn the color back to default. While the first button is red I still want to be able to use the second button and change its text by pressing it while button one is ...

85. timer and scheduling tasks    java-forums.org

HI, I have a stand alone java swing application where I have a table with some values say name of the car, which year it was released, when it was sold... so i need to keep checking that table to see if the current year matches the time it was sold.. if matches show a reminder window saying 'u need to ...

86. Swing timers question?    java-forums.org

okay, so i have a GUI made using swing, and ever 5 seconds or so, i need to update part of the gui from a url. (output.setPage(url)) so i have this running in a timer, the problem is, every time it goes to update, it makes my GUI hang. is there another way to do this that wont make it hang? ...

87. Problems with Timer Constructor    java-forums.org

Hi there. I am a student at uni who is doing a a few java topics. I have been asked to create a gui which represents a microwave. I have set the interface and gotten the buttons to respond by using a listener. However I keep having trouble trying to initiate a timer. I get this error message: Symbol: Constructor Timer(int, ...

88. Timer issues.    java-forums.org

So I want to be able to press any key then for it to repaint, and I think I need the timer to do so but its not working I get this issue "AJPanel.java:21: cannot find symbol symbol : constructor Timer(int,AJPanel) location: class javax.swing.Timer t = new Timer(30,this);" but I've seen so many people write timer the same way without this ...

89. CountDown timer    java-forums.org

90. Swing Timer Questions    java-forums.org

public class TimerDemo { JButton btnStart; JButton btnStop; Timer timer; public TimerDemo() { btnStart = new JButton("Start"); btnStop = new JButton("Stop"); ActionListener a = new ActionListener() { public void actionPerformed(ActionEvent e) { System.out.println("Timer Started"); } }; // Initialize the timer timer = new Timer(5000, a); // Events btnStart.addMouseListener(new MouseAdapter() { public void mouseClicked(java.awt.event.MouseEvent evt) { timer.start(); } }); }

91. How to make swing.Timer as a separate class    java-forums.org

Cross-posted in the sun forums: http://forums.sun.com/thread.jspa?th...35990&tstart=0 and ?elsewhere? To the original poster, welcome to the forum, and I hope your question gets answered, but I do request that if you cross-post a question you provide links to the other cross-posts. Nobody likes duplicating work that's already been done, and in fact many resent this. A simple solution is to again provide ...

92. Proper swing timer syntax    java-forums.org

I have been trying to get the proper syntax for the swing timer yet have not been able to get rid of all of the bugs that pop up. These are two ways that I have seen online. Netbeans has underlined the Timer constructor in both due to, as far as I can tell, incorrect type parameters, because Timer requires (int, ...

94. Using a timer to change a GUI    forums.oracle.com

95. javax.swing.timer    forums.oracle.com

OK, so how do I implement two action listeners in the same class? Or is it better to implement a class for each ActionListener? In examples I have seen, it appears to be common practice to funnel all the the buttons in a GUI through the same ActionListener and distinguish between them with if statements.

96. Stopping a Swing Timer?    forums.oracle.com

I have a simple code that starts a timer. The actionlistener contains stuff that works and I can start the timer with a push of a button. I can also quit the program with push of another button using System.exit(). What I seem not able to do is to simply stop the timer from a button push. I know the stop ...

97. swing timer    forums.oracle.com

Swing timers are executed in the Event-Dispatch Thread (EDT). This thread is probably started only when a top-level container such as a JFrame or JDialog is shown. What happens here is probably that the Timer actually starts, but when it fires it posts an event to the EDT, which is never proxessed.

98. Swing Timer - setDelay() while running    forums.oracle.com

You where asked in your last posting to search the Swing forum for examples and post Swing questions in the Swing forum (in fact you've been asked multiple time). Gee your topic heading is "SWING". Is that not a clue about where to search and post? I'm not going to repeat answers that may have already been given in other postings, ...

99. Swing - Timer - getCurrentTime?    forums.oracle.com

Take note of the the time when the timer starts. Then in the method that handles each "tick", get the current time and subtract it from the start time. That will give you the time that the timer has been running for. (Otherwise, noting that the delay is set to 1.6s you can just set the elapsed time to zero when ...

100. javax.swing.Timer or java.utilTimer ?    forums.oracle.com