jprogressbar

问题 I've got a progress bar, when I strike the button, on the button listener I've got a progress bar that updates as something downloads. However, the GUI freezes until the download is complete. How can I get this progress bar to update as the download continues? However, if the download starts when the application is compiled without user interference, the download progresses as the progress bar updates. However, it's the complete opposite on JButton action listener. How can I use SwingWorker

问题 I've downloaded a small Java project from oracle website to create a progress bar. I understand it, but I need to apply it in a different way, the application is creating a thread in the background so the progress bar can be updated accordingly ( doInBackground() ). My question is, how can I replace this kind of process in the background in this application by a method from my application (method is just doing a kind of batch processing on a database), can someone help please? Here is code by

问题 I want to select the folder that is selected. JFileChooser targetDir = new JFileChooser(); targetDir.setDialogTitle("Choose Target Directory."); targetDir.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY); if(targetDir.showOpenDialog(null)==JFileChooser.APPROVE_OPTION) { System.out.println(targetDir.getCurrentDirectory()); main_mw = new MainWindow("XYZ Copier"); main_mw.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); } else { System.exit(0); } } else { } It gives the output "/home

问题 I have a JFrame with progress bar and my code which should run it in background showing the progress in progress bar. I implemented runnable in my Progressbar class and started the thread. But the progress bar frame is not displaying full.. and it gets stuck and it display full after my code is fully executed i.e after main thread close. I know this is some basic mistake. public class ProgressScriptUI extends JFrame implements Runnable{ @Override public void run() { // TODO Auto-generated

问题 I have a JFrame with progress bar and my code which should run it in background showing the progress in progress bar. I implemented runnable in my Progressbar class and started the thread. But the progress bar frame is not displaying full.. and it gets stuck and it display full after my code is fully executed i.e after main thread close. I know this is some basic mistake. public class ProgressScriptUI extends JFrame implements Runnable{ @Override public void run() { // TODO Auto-generated

问题 Continuing from Setting the colors of a JProgressBar text I would like to be able to set the text colors of JProgressBar s in my program dependent upon process state and without moving away from System look and feel. From one of the answers on Setting the colors of a JProgressBar text , it looks like I can only set text colors without changing the UI to a single set of values, so I could choose neutral values that look decent regardless of the foreground and progress, but I would like to

问题 Relevant piece of code: JProgressBar progress; JButton button; JDialog dialog; //Fields of my GUI class progress=new JProgressBar(JProgressBar.HORIZONTAL,0,100); button=new JButton("Done"); dialog=new JDialog(); //Done from methods progress.setValue(0); progress.setStringPainted(true); progress.setBorderPainted(true); //Also done from methods button.addActionListener(this); //Also done from methods dialog.setLayout(new FlowLayout(FlowLayout.CENTER)); dialog.setTitle("Please wait..."); dialog

问题 Hello i would like to know if i can extends a JProgressBar to use double value for min max, instead of int. Thank you. 回答1: If you know the bounds and precision of your values, it's quite easy to do with a wrapper. I've used this approach for a computationally intensive application where 1% equates to about 30 seconds. Showing a JProgressBar with min=0 and max=100 didn't give enough feedback. Users thought the application was hung. Solution: Scale the values I had a float (0f - 1f) that

问题 Ok, I have the following code. public class MyProgressBar extends JPanel implements MyData, Serializable { /** * */ public static final int MAX = 10000; public static final int WIDTH = 400; public static final int HEIGHT = 75; private JProgressBar MyBar = new JProgressBar( SwingConstants.HORIZONTAL, 0, MAX ); private JFrame MyFrame = new JFrame(); private int MyValue = 0; private Thread MyThread = new Thread( new ProgressThread() ); public MyProgressBar() { add(MyBar); int x = ( MyData.SCREEN

问题 I've been working for a while with JProgressBar using WindowsLookAndFeel , but I found some major differences from the native progress bar: Here is the native bar, in its regular state: While this is Java's: A sharp eye might see java's, top white color much brighter, and the green a little brighter too. Also the native is "filled" while Java's has an empty border. Now, the native indeterminate: And Java's: The flicker is much shorter, and much much faster (not shown). Also as the native