Java by API/javax.swing.event/MenuDragMouseListener

implements MenuDragMouseListener

 
import java.awt.event.KeyEvent;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.event.MenuDragMouseEvent;
import javax.swing.event.MenuDragMouseListener;
public class Main {
  public static void main(final String args[]) {
    JFrame frame = new JFrame("MenuSample Example");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    JMenuBar menuBar = new JMenuBar();
    // File Menu, F - Mnemonic
    JMenu fileMenu = new JMenu("File");
    fileMenu.setMnemonic(KeyEvent.VK_F);
    menuBar.add(fileMenu);
    // File->New, N - Mnemonic
    JMenuItem newMenuItem = new JMenuItem("asdf");
    fileMenu.add(newMenuItem);
    
    newMenuItem.addMenuDragMouseListener(new MenuDragMouseListener(){
      public void menuDragMouseEntered(MenuDragMouseEvent e) {
        System.out.println("menuDragMouseEntered");        
      }
      public void menuDragMouseExited(MenuDragMouseEvent e) {
       System.out.println("menuDragMouseExited");
        
      }
      public void menuDragMouseDragged(MenuDragMouseEvent e) {
        System.out.println("menuDragMouseDragged");
        
      }
      public void menuDragMouseReleased(MenuDragMouseEvent e) {
        System.out.println("menuDragMouseReleased");
        
      }});
    frame.setJMenuBar(menuBar);
    frame.setSize(350, 250);
    frame.setVisible(true);
  }
}