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How to execute a long running task from an action without blocking the GUI?

The easy way if you might need to run a long task when some action is involved:

@ActionRegistration(asynchronous = true)
public void actionPerformed(ActionEvent ev) {
    if (isLongTaskRequired) {
        // maybe run a ProgressHandler
    EventQueue.invokeLater(new Runnable() {
        @Override public void run() {
            // do domething with the gui

This way you don’t even need to care about threading yourself, GUI will be updated as long as the task is finished.

Taken from dev@platform.netbeans.org (Oct 2013)

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The content in this page was kindly donated by Oracle Corp. to the Apache Software Foundation.

This page was exported from http://wiki.netbeans.org/DevFaqTaskLongRunningAsyncTask , that was last modified by NetBeans user Markiewb on 2013-10-03T17:04:13Z.

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