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JCheckBox in a JList

Gregg Bolinger
GenRocket Founder
Ranch Hand

Joined: Jul 11, 2001
Posts: 15302

I am trying to make a JList of JCheckBoxes. Here is the code

It comiles and runs, and I can see the Checkboxes with the correct text, however, I can't click on the check boxes. When I click the checks, they don't get checked. Any ideas?

GenRocket - Experts at Building Test Data
Travis Kline

Joined: Jul 16, 2002
Posts: 14
1. Create an Object to retain the checkbox's state, generate accessors, override toString(), etc
public ListCheckBox(Object newObject) {
aObject = newObject;
isSelected = false;
then add this object to your data model
DefaultListModel aModel = new DefaultListMode();
aModel.addElement(new ListCheckBox(newElement));

2. In your list cell renderer's getListCellRendererComponent, change the state of the checkbox:

this.setSelected(((ListCheckBox) value).isSelected());
3. Add a mouselistener to your list and upon mouseClicked:
public void doCheck() {
ListCheckBox item =
(ListCheckBox) getSelectedValue();
This is should start you in the right direction but you'll probably have to do a lot of tweeking to get it to behave the way you want.
Nathan Pruett

Joined: Oct 18, 2000
Posts: 4121

"TK" -

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subject: JCheckBox in a JList
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