Select Multiple Items In JList Without Using The Ctrl/Command Key

Question

I am looking for a way to select multiple items within a JList by just clicking each item.

The normal way to do this is to hold the command/ctrl key and then click.

Answer 1

Think twice before changing default behavior. Unless you have some special use-case, I'd not like my List to work different than everywhere else :)

Having said that, you should be able to use your own ListSelectionModel:

list.setSelectionModel(new DefaultListSelectionModel() {
    @Override
    public void setSelectionInterval(int index0, int index1) {
        if(super.isSelectedIndex(index0)) {
            super.removeSelectionInterval(index0, index1);
        }
        else {
            super.addSelectionInterval(index0, index1);
        }
    }
});