Thank you all very much !!
It worked out, and here I attach a simplified version. There's also a
SwingWorker class that treats this more gracefully, but perhaps no extra
complexity is needed.
Regards.
class {
Thread heavy = null;
private void jButton1ActionPerformed (java.awt.event.ActionEvent event) {
Runnable heavyThread = new Runnable() {
public void run() {
// HEAVY PROCESSING
Runnable GUIThread = new Runnable() {
public void run() {
// Here the GUI effects of the results generated by the heavy
process
textArea1.append("GUIThread\n");
}
}; // GUIThread
// Puts in the event queue the GUIThread
javax.swing.SwingUtilities.invokeLater(GUIThread);
}
}; // heavyThread
heavy = new Thread(heavyThread,"heavyThread");
heavy.start();
}
}
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