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POupdating a JProgressBar while processing
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copied!<p>I know the subject has already been seen on many Questions and has been answered, but still, I can't get trough it.</p> <p>I just want to <strong>update a progressBar while extracting some stuff</strong> of a large xml file. I thought it was enough to have the time-consuming loop in a different thread but ?.. All I managed to get is the progressBar either not showed at all, or updated at the end, just before it's closed.</p> <p>Instanced somewhere near the launch of the application, I have:</p> <pre><code>public class SomeClass { private SomeClass () { myXMLParser reader = new myXMLParser(); CoolStuff fromXml = reader.readTheXml(); } } </code></pre> <p>while showing and updating a JDialog with a JProgressBar:</p> <pre><code>public class LoadingDialog extends JDialog { private JProgressBar progressBar; /* ... */ public void progress() { progressBar.setValue(progressBar.getValue() + 1); } } </code></pre> <p>So I have this <em>myXMLParser</em>:</p> <pre><code>public class myXMLParser { private LoadingDialog loadingDialog = new LoadingDialog(); public CoolStuff readTheXml() { CoolStuff fromXml = new CoolStuff(); while(manyIterations) { loadingDialog.progress(); fromXml.add(some() + xml() + reading()); } return fromXml; } } </code></pre> <p>I have seen many things with <code>SwingWorker</code> and using <code>PropertyChange</code> events update the progressBar, but examples are always given <em>all-in-one</em>, with the processing and the progressbar within the same class, and with classes within classes, and since I begin in Java, I wasn't able to translate that to my situation. </p> <p>Any help ?.. Any (not too obvious) advices ?</p> <p><strong>Edit:</strong> So thanks to btantlinger it worked like that:</p> <pre><code>public class SomeClass { private SomeClass () { myXMLParser reader = new myXMLParser(); new Thread(new Runnable() { @Override public void run() { CoolStuff fromXml = reader.readTheXml(); } }).start(); } } public class LoadingDialog extends JDialog { private JProgressBar progressBar; /* ... */ public void progress() { progressBar.setValue(progressBar.getValue() + 1); } } public class myXMLParser { private LoadingDialog loadingDialog = new LoadingDialog(); public CoolStuff readTheXml() { CoolStuff fromXml = new CoolStuff(); while(manyIterations) { SwingUtilities.invokeLater(new Runnable() { public void run() { loadingDialog.progress(); } }); fromXml.add(some() + xml() + reading()); } return fromXml; } } </code></pre>

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