Is there a way to pass data e.g an object to the swingWorker before invoking "swingWorker.execute"?
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Related to my previous question: Call repaint from another class in Java?.
I'm new to Java, and I've had a look at some tutorials on SwingWorker, but I'm unsure ... |
As I have said in my previous questions, I'm still new to Java.
I'm developing a tile-based game in Java. The movement is on a grid. I'm at the stage where I'm ... |
I am trying to load all types of files (like Microsoft Notepad). The SwingWorker I have can load normal text just fine but when a file such as mp3, pdf, etc. ... |
I am creating a GUI using Java. This GUI launches a program from the command line using the ProcessBuilder class.
A little information on the process being launched: ... |
I'm developing an applet that makes some work and then a redirection to an URL when user clicks on a button. I'm using a SwingWorker to prevent GUI gets locked up. ... |
I am trying to implement a SwingWorker class within my application. Is there a way to set a length of time that after which, the SwingWorker "times out"? I ... |
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I want to create an abstract class in java that forces all its subclasses to implement a SwingWorker (plus the SwingWorker's abstract doInBackground() and done()).
In AbstractClass -
abstract class Task extends SwingWorker<Void, ...
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I am relatively new to multi-threading and want to execute a background task using a Swingworker thread - the method that is called does not actually return anything but I would ... |
I have an assignment where i have to create an Image Gallery which uses a SwingWorker to load the images froma a file, once the image is load you can flip ... |
SwingWorker is used for the following purposes:
- For running long-running tasks in a different thread so as to prevent the GUI from being unresponsive
- For updating GUI with the results produced by the ...
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My "problem" can be described by the following. Assume we have an intensive process that we want to have running in the background and have it update a Swing JProgress bar. ... |
As part of my Final Year Project I've developed a desktop application, which fits in the category of the "graphical IDE" if such a thing exists. I've implemented a little subset ... |
I have a start and stop button. I want to be able to start and stop a task as many times as the user wants to. I was able to get ... |
Is there a way to pause/resume the SwingWorker in Java ?
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What are the advantages of using SwingWorker instead of Thread or Runnable?
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I have a Swingworker that I sometimes need to cancel. If I execute and then cancel, it works as expected. If I run a new instance of that Swingworker and then ... |
I have a method that uses a SwingWorker. Part of the code is shown below:
public class mySocket {
public void writePacket(final String packet) {
...
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I'm having problems migrating my Java files from Ubuntu to Mac. Mac complains about my use of SwingWorker---it can't find javax.swing.SwingWorker .
In Mac's terminal, doing java -version tells me I have ... |
I'm quite a fan of SwingWorker (for non-trivial processing, with a GUI)... publish/process chunks.
But equally, if you want to make an object in a non-EDT thread come to the attention of ... |
My gui is a 50x50 GridLayout that updates using the SwingWorker.
Each grid in the GridLayout has a GridGraphic component which has a specific intensity.
Default intensity = 0, which is just a ... |
Hi all, Questions about Thread. Does anybody can help me regarding Producer/Consumer using SwingWorker ? Here is the background. I'm developing a Java program, Swing based, which : a). check every, say, 30 sec if a file within a directory exists b). if exists, the process it ( this could be time-consuming task ). c). run a query every, say, 60 ... |
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Hi, I have a long-running task that gets launched in a SwingWorker thread from my GUI when the user presses a button. However, I'd like the user to be able to kill that long running-task with a "Stop" button. The problems I'm running into are that 1) my long running task isn't in a loop, it's just a once-and-done long task. ... |
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I am having real trouble with swing workers. I can't get them to compile. I am using the following code in a program: String input= gui.getInArea().getText(); SwingWorker worker = new SwingWorker() { public String doInBackground() { String output = TextManipulator(input); return output; } public void done() { //will be replaced by gui update later System.out.println("Done"); } }; worker.execute(); } ... |
Why would you do something like this? I notice it's used in the static createAndShowGUI method.. is it to allow an object reference in a static context? Well, if the _this variable is a static variable, then yes, this will give a variable that can be access from a static method. However, keep in mind that there is only one _this ... |
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I have made a countdown timer which include SwingWorker. The doInBackground and propertyChange looks like this: Java Code: public Void doInBackground() { System.out.println("doInBackground = " + "Start"); //Initialize progress property. setProgress(0); while (progress < PROGRESS_MAX) { [B]System.out.println("doInBackground progress = " + progress);[/B] try {Thread.sleep(1000);} catch (InterruptedException ignore) {} countDownTimer.setOneSecondCountDown(1); progress = countDownTimer.getSecondsElapsed() * PROGRESS_MAX / countDownTimer.getTimerStart(); if (progress == old){ if ... |
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Hello, I'm trying to write an application which reads streaming information from a socket and displays it in graphical form. I'm using a Java Swing application. Should I put the code for reading information from the socket in a Swingworker thread or just a plain thread. By plain thread I mean something like: private static class MessageLoop implements Runnable { .. ... |
Hi guys, I'm working on a little project on my free time. Currently I have a Algo class working with text input/output (using another class), and I want to write a GUI around it. I have a runAlgo method and get methods (in the Algo class) to get the results. I also implemented Runnable interface for the Algo. Now I have ... |
Well I tried to get it defined for you. All I'll say in addition is that polling, simply defined, is: Checking something over and over in a loop until something changes (or until some other condition is met, such as in your case, a counter reaches a certain value) all the while sucking up the processor's time it could be spent ... |
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Not if you use it's GUI builder to learn Java. If the purpose of the exercise is to learn Java then you have to write Java yourself... Stands to reason, doesn't it? I know... but Java isn't VB or C#, it's different. In 5 years time I humbly predict that GUI's in java will be XML documents; which will only be ... |
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Move calls of load() and parse() into SwingWorker#done() I think you need to read the SwingWorker documentation again, and more carefully. -- doInBackground is executed on a Worker thread -- done is executed on the EDT. Neither your load nor parse calls should be executed on the EDT, so put them in doInBackground. done will be automatically invoked when doInBackground returns, ... |
public QuoteGetter(int port, InetAddress address) { this.port = port; this.address = address; } @Override public String doInBackground() { DatagramPacket packet; byte[] sendBuf = new byte[MAX_NUM_CHARS]; packet = new DatagramPacket(sendBuf, MAX_NUM_CHARS, address, port); try { // send request if (DEBUG) { System.out.println("Applet about to send packet to address " + address + " at port " + port); } socket.send(packet); if (DEBUG) ... |
I have created a simple Swing GUI that is calling a background thread (a SwingWorker) to simply update a count variable every 1 second, and call SwingWorker.publish(String). (I was trying to work with returning a Long, but I was getting a NullPointerException when calling publish(), so I tried a string to see if I could do that). Now, I can ... |
Now don't get me wrong, everything works peachy, but it seems a bit retarded that i have to pass the SwingWorker object as an argument to my Explode.class so i can catch the cancelation. (I do the same thing for the progress bar, i pass the JProgressbar object and i manipulate it directly within my Explode class). I know I'm missing ... |
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The Web interface (no card reader) merely accesses a database to read Card 'Balance' which can be 12hours out of date. - stored value card merchants only talk to the database once or twice a day... this is a feature not a bug! The "one second" delay was just to demonstrate a sequence of events... 1) wait for the card reader ... |