コール スタックを見ると、AWT イベントをいじらずにやりたいことを実際に行うことはできません。
Thread [AWT-EventQueue-0] (Suspended (breakpoint at line 384 in DefaultListSelectionModel))
DefaultListSelectionModel.changeSelection(int, int, int, int, boolean) line: 384
DefaultListSelectionModel.changeSelection(int, int, int, int) line: 415
DefaultListSelectionModel.setSelectionInterval(int, int) line: 459
TestJList$1(JList<E>).setSelectionInterval(int, int) line: 2067
BasicListUI$Handler.adjustSelection(MouseEvent) line: 2739
BasicListUI$Handler.mousePressed(MouseEvent) line: 2695
AWTEventMulticaster.mousePressed(MouseEvent) line: 280
TestJList$1(Component).processMouseEvent(MouseEvent) line: 6502
TestJList$1(JComponent).processMouseEvent(MouseEvent) line: 3321
TestJList$1.processMouseEvent(MouseEvent) line: 24
TestJList$1(Component).processEvent(AWTEvent) line: 6270
TestJList$1(Container).processEvent(AWTEvent) line: 2229
TestJList$1(Component).dispatchEventImpl(AWTEvent) line: 4861
TestJList$1(Container).dispatchEventImpl(AWTEvent) line: 2287
TestJList$1(Component).dispatchEvent(AWTEvent) line: 4687
LightweightDispatcher.retargetMouseEvent(Component, int, MouseEvent) line: 4832
LightweightDispatcher.processMouseEvent(MouseEvent) line: 4489
LightweightDispatcher.dispatchEvent(AWTEvent) line: 4422
JFrame(Container).dispatchEventImpl(AWTEvent) line: 2273
JFrame(Window).dispatchEventImpl(AWTEvent) line: 2713
JFrame(Component).dispatchEvent(AWTEvent) line: 4687
EventQueue.dispatchEventImpl(AWTEvent, Object) line: 707
EventQueue.access$000(EventQueue, AWTEvent, Object) line: 101
EventQueue$3.run() line: 666
EventQueue$3.run() line: 664
AccessController.doPrivileged(PrivilegedAction<T>, AccessControlContext) line: not available [native method]
ProtectionDomain$1.doIntersectionPrivilege(PrivilegedAction<T>, AccessControlContext, AccessControlContext) line: 76
ProtectionDomain$1.doIntersectionPrivilege(PrivilegedAction<T>, AccessControlContext) line: 87
EventQueue$4.run() line: 680
EventQueue$4.run() line: 678
独自の ListUI を実装してから、(この望ましくない動作の防止を含めて) 好きなことを行うこともできますが、その道をたどることは本当にお勧めしません。
価値があるのは (processXXXEvent メソッドをオーバーライドすることによって行われます)、ここに小さなスニペットがありますが、実際にはそれほど醜くなく、境界の外をクリックしたときにオブジェクトを選択するのを防ぎます:
import java.awt.event.MouseEvent;
import javax.swing.JFrame;
import javax.swing.JList;
import javax.swing.JScrollPane;
import javax.swing.SwingUtilities;
public class TestJList {
private JList list;
protected void initUI() {
JFrame frame = new JFrame("test");
list = new JList(new Object[] { "Hello", "World", "!" }) {
private boolean processEvent(MouseEvent e) {
int index = list.locationToIndex(e.getPoint());
return index > -1 && list.getCellBounds(index, index).contains(e.getPoint());
}
@Override
protected void processMouseEvent(MouseEvent e) {
if (processEvent(e)) {
super.processMouseEvent(e);
}
}
@Override
protected void processMouseMotionEvent(MouseEvent e) {
if (processEvent(e)) {
super.processMouseMotionEvent(e);
}
}
};
list.setVisibleRowCount(10);
frame.add(new JScrollPane(list));
frame.pack();
frame.setVisible(true);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
new TestJList().initUI();
}
});
}
}