ButtonGroup: Quantity of selected elements

Question

How do I get the quantity of all selected JToggleButtons in a ButtonGroup?

ButtonGroup bGroup = new ButtonGroup();
bGreen = new JToggleButton("Green");
bYellow = new JToggleButton("Yellow");
bRed = new JToggleButton("Red");

bGroup.add(bGreen);
bGroup.add(bYellow);
bGroup.add(bRed);

`quantity of all selected elements in a ButtonGroup`, which one apples or bananas, for better help sooner edit your question with a [SSCCE](http://sscce.org/), otherwise this question is simple un_answerable — mKorbel, May 01 '12 at 17:23
I guess he wants to say "how many elements from the ButtonGroup are selected?" — AlexR, May 01 '12 at 17:26

score 3 · Accepted Answer · answered May 01 '12 at 17:30

3

There are several ways. For example bGroup.getSelection().getSelectedObjects().length. You can also call getElements(), then iterate over enumeration and ask isSelected() for each button. Please refer to API doc.

answered May 01 '12 at 17:30

AlexR

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score 0 · Answer 2 · answered May 01 '12 at 17:32

0

You have to add a item listener to each of the toogle

public int counter = 0;
public void itemStateChanged(ItemEvent e) {
    if(e.getStateChange() == ItemEvent.SELECTED)
    {
         counter++;
    }
    else
    {
        counter --;
    } 
}

answered May 01 '12 at 17:32

Nitin Chhajer

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ButtonGroup: Quantity of selected elements

2 Answers2