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POJava file a progress bar
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  1. POJava file a progress bar
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    copied!<p>I'm new to Java. I want to write a program that makes arcive of file and i want to use progress bar to show progress of zipping There is my code, but it duosen't work shows only 100% when work is done.</p> <pre><code> getContentPane().add(progressBar); progressBar.setBorder(new CompoundBorder(null, null)); springLayout.putConstraint(SpringLayout.EAST, progressBar, 0, SpringLayout.EAST, messageLabel); springLayout.putConstraint(SpringLayout.WEST, progressBar, 0, SpringLayout.WEST, messageLabel); springLayout.putConstraint(SpringLayout.SOUTH, progressBar, 165, SpringLayout.NORTH, getContentPane()); springLayout.putConstraint(SpringLayout.NORTH, progressBar, 5, SpringLayout.SOUTH, uploadLocalButton); progressBar.setValue(0); progressBar.setMaximum(100); progressBar.setMinimum(0); progressBar.setStringPainted(true); ... public void doZip(String filename,String outFilename) { try { byte[] dataBytes = new byte[1024]; File file = new File(outFilename); file.createNewFile(); FileOutputStream fos = new FileOutputStream(file); ZipOutputStream zos = new ZipOutputStream(fos); File fil = new File(filename); //"Users/you/image.jpg" long length= fil.length(); System.out.println(length); zos.putNextEntry(new ZipEntry(fil.getName()));//image.jpg FileInputStream in = new FileInputStream(filename); int current=0; int len; while ((len = in.read(dataBytes)) &gt; 0) { current += len; messageLabel.setText(Integer.toString(current)); System.out.println(current); final double progres=(((double)current/(double)length)*100); progressBar.setValue((int)progres); zos.write(dataBytes, 0, dataBytes.length); } zos.closeEntry(); zos.close(); in.close(); }catch (IOException e) { JOptionPane.showMessageDialog(null, "Access denied. File or patch not exist or in currently in use.","Error", JOptionPane.ERROR_MESSAGE); e.printStackTrace(); }} </code></pre> <p>Maybe someone knows where is the problem?</p> <hr> <p>I call <strong>doZip</strong> by pressing the botton. I tried this </p> <pre><code> while ((len = in.read(dataBytes)) &gt; 0) { current += len; zos.write(dataBytes, 0, dataBytes.length); final double progres=(((double)current/(double)length)*100); try{ SwingUtilities.invokeLater(new Runnable(){ public void run(){ progressBar.setValue((int)progres); } }); java.lang.Thread.sleep(100); }catch(InterruptedException e){;} </code></pre> <p>but it also doesent work, only makes process of zip opperation much more longer.</p>
 

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