Jlist problem

[Mika Suomi]

I have a JList in a window and I put item there from String[] lst-table.
When I click item in a list it gives result twice.
Why?

private JList list ;

list=new JList(lst);

public void valueChanged(ListSelectionEvent e) {

System.out.println(list.getSelectedIndex());

}

 

[Jan Liße]

maybe it works when you set this:

list.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);

 

[Mika Suomi]

That did't help :-(

 

[Mika Suomi]

Little more info about problem if I choose for exsample item 3 when I click
mouse the first return comes and when I release mouse the second release
comes.

Mika Suomi

 

[Jan Liße]

hi mika,now i understand your problem! try this snippetublic void
valueChanged(ListSelectionEvent e) {
if (e.getValueIsAdjusting() == false) //true if user still manipulates
selection { if (list.getSelectedIndex() == -1) {
System.out.println(list.getSelectedIndex());

}
}

 

[Jan Liße]

again, here correctly formatted:

public void valueChanged(ListSelectionEvent e)
{
if (e.getValueIsAdjusting == false)
{
if (list.getSelectedIndex() != -1)
{
// no selection, do something
}
System.out.println(list.getSelectedIndex());
}

greetz,
jan

 

[Mika Suomi]

Thanks ,now it works!

Mika Suomi