How to check whether the tab is active or not in JTabbedPane?

Question

How can I check whether a tab in a JTabbedPane instance is active or not, in the class of the tab (nested class) itself and not in the enclosing class?

I know that there is a method booloean isEnabledAt(int index); but this method can only be called in the enclosing class. Whereas I want to check whether the tab is currently selected within the tab class itself (nested class).

Can anybody please suggest how?

score 16 · Accepted Answer · answered May 30 '10 at 05:48

16

Your component has a parent, eventually the JTabbedPane. JTabbedPane has methods like getSelectedIndex() or getSelectedComponent().

answered May 30 '10 at 05:48

miku

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Thank u. But How can I call these methods in the nested class of JTabbedPane? as the need is to see whether a tab is selected or not and if it is I have to update the contents by removing old version of a component and replacing it with new one. How to achieve it? – Supereme May 30 '10 at 10:02

score 7 · Answer 2 · edited Feb 13 '13 at 20:51

I know that this is old topic, but I found it when looking for a solution to a similar (though slightly different) problem.

To determine what tab was selected, use a ChangeEvent listener. This is a very simple way to perform an action whenever a tab is selected. Hopefully this will help someone else, though this is an old topic.

private void zakladkiStateChanged(javax.swing.event.ChangeEvent evt) 
{                                      
    if (zakladki.getTitleAt(zakladki.getSelectedIndex()).equals("tab title here")) 
    {
        // what you wish to do when tab is selected here ....
    }
}

How to check whether the tab is active or not in JTabbedPane?

2 Answers2

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