How to use Key Bindings for some Swing components in a GUI

2009-06-25T09:17:00.000-07:00

You have a Swing Application and you want to listen for some key actions, but only when some dialog or panel is active (on focus).
1.) Create a JPanel and move all needed components of user-dialog in it
2.)Create a global action for this Key


public class Myaction extends AbstractAction{

public void actionPerformed(ActionEvent e) {
System.out.println("Hello");}
}

3.)Instance the action


MyAction actions = new MyAction();

4.)Use the InputMap of JPanel to listen on e.g "F2" Key and put the instanced action
to its ActionMap.


jPanel1.getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT).put(KeyStroke.getKeyStroke("F2"), "doSomething");

jPanel1.getActionMap().put("doSomething", actions);

Thats all. If you have an Swing application and the focus is on a JComponent in this Panel then the action will work.

How to use Netbeans Progress bar

2009-06-19T07:24:00.001-07:00

Package org.netbeans.api.progress Description
This API allows to visualize tracking for progress of long lasting tasks.

The usual usecase goes like this:



ProgressHandle handle = ProgressHandleFactory.createHandle("My custom task");
...
// we have 100 workunits
// at this point the task appears in status bar.
handle.start(100);
...
handle.progress(10);
...
handle.progress(50);
...
// at this point the task is finished and removed from status bar
handle.finish();

http://bits.netbeans.org/dev/javadoc/org-netbeans-api-progress/org/netbeans/api/progress/package-summary.html

Osman Celik's Blog

How to use Key Bindings for some Swing components in a GUI

How to use Netbeans Progress bar