Java SE (Java Platform, Standard Edition)

When I place code inside this event, it will correctly execute when debugging in NetBeans. However, when I compile and run the JAR, it won't execute the code in this event. Am I missing something? The code is just a simple Button Grouping and setting one the of the JLabels to invisible.

private void formWindowOpened(java.awt.event.WindowEvent evt) {
    ButtonGroup oButtonGroup = new ButtonGroup();
    oButtonGroup.add(rbXML);
    oButtonGroup.add(rbProp);

    lbStatus.setVisible(false)
}