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= DevFaqTaskLongRunningAsyncTask
:jbake-type: wiki
:jbake-tags: wiki, devfaq, needsreview
:jbake-status: published
:keywords: Apache NetBeans wiki DevFaqTaskLongRunningAsyncTask
:description: Apache NetBeans wiki DevFaqTaskLongRunningAsyncTask
:toc: left
:toc-title:
:syntax: true

== 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:

[source,java]
----

@ActionRegistration(asynchronous = true)
...
public void actionPerformed(ActionEvent ev) {
    if (isLongTaskRequired) {
        // maybe run a ProgressHandler
        doLongTask();
    }
    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)

== Apache Migration Information

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

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


*NOTE:* This document was automatically converted to the AsciiDoc format on 2018-02-07, and needs to be reviewed.