swingworker

I'm having a problem with my JButton ActionListener. I have a doTheCleaning() method defined in another class which when called makes series of changes to my GUI. public void doTheCleaning(){ //change image icon //had thread.sleep here //insert to text area //had thread.sleep here //etc } Then in another class, I instantiated the class containing my doTheCleaning() method and had my ActionListener written with my actionperformed() method for my jbutton written like this: public void actionPerformed(ActionEvent e){ //some code //newClass.doTheCleaning(); } I know how to do the rest like

I would like to populate a JTable during runtime with many rows (lets say 10000). But all my attempts are very poor and inefficient. Starting point is the addData method which gets a List of Objects representing a row. I tried to fill the table via a SwingWorker but this only works for small data for me. Another attempt was setting the data directly without using any kind of thread, but this is also very slow, at least the UI isn't blocked like its the case with the SwingWorker. So how do you do this is general? The table should be filled row by row or chunkwise but not all by one and the

My problem is that I don't understand how the swingworker works because what I'm trying to do is to make fa=worker.get() because I have a long method which compute a lot of points running in background because I don't want to freeze my interface and I want to get her results to paint the component image. But I don't understand where it goes when I do fa=worker.get() because my console prints "titi" and I put a lot of other printing to see the next part of program reached but no one is printed. Please help me to know where the compilation goes after get() or while it execute it and if you have

I need to convert a any image given to a byte array for encryption requirement. I'm using JProgressBar to monitor the conversion progress in case the chosen image is large: File p= new File("C:\"); BufferedImage oImg = ImageIO.read(p); ByteArrayOutputStream ba = new ByteArrayOutputStream(); ImageIO.write(oImg, "jpg", ba); ba.flush(); ProgressBar pb = new ProgressBar(); Thread thread = new Thread(pb); thread.join(); pb.fireTask(ba.toByteArray()); I defined a ProgressBar class that uses SwingWorker as follows: public class ProgressBar extends JPanel implements Runnable { private JProgressBar

I've made my own SwingWorker example to get familiar with how it works. What I'm wanting to do is the following: When the button is clicked I want a progress bar appear until the task is done I want to simply remove the progress bar and add a string to the dialog. When the button is clicked, the progress bar comes up but never goes away. (never removes the progress bar after 10 seconds and never places the label up) Here is an SSCCE: package swingtesting; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.JButton; import javax.swing.JDialog; import

I'm using this exercise as a pedagogical tool to help me burn in some Java GUI programming concepts. What I'm looking for is a general understanding, rather than a detailed solution to one specific problem. I expect that coding this "right" will teach me a lot about how to approach future multi-threaded problems. If this is too general for this forum, possibly it belongs in Programmers? I'm simulating a card reader. It has a GUI, allowing us to load cards into the hopper and press Start and so forth, but its main "client" is the CPU, running on a separate thread and requesting cards. The card