JMenu.isTearOff() has the following syntax.
public boolean isTearOff()
In the following code shows how to use JMenu.isTearOff() method.
//w w w .j a v a 2s.c o m import java.awt.ComponentOrientation; import java.awt.event.ActionEvent; import javax.swing.AbstractAction; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JMenu; import javax.swing.JMenuBar; import javax.swing.JMenuItem; import javax.swing.JSeparator; public class Main extends JFrame { public Main() { setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); JMenuBar bar = new JMenuBar(); JMenu menu = new JMenu("File"); ComponentOrientation ori = ComponentOrientation.LEFT_TO_RIGHT; menu.applyComponentOrientation(ori); bar.add(menu); menu.add(new JMenuItem("Close")); menu.add(new JSeparator()); // SEPARATOR menu.add(new JMenuItem("Exit")); setJMenuBar(bar); add(new JLabel("A placeholder")); pack(); setSize(300, 300); setVisible(true); menu.isTearOff(); } public static void main(String arg[]) { new Main(); } }