JMenuItem: setMnemonic(char mnemonic) : JMenuItem « javax.swing « Java by API

1. Java by API
2. javax.swing
3. JMenuItem

JMenuItem: setMnemonic(char mnemonic)

 
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.event.ActionEvent;

import javax.swing.AbstractAction;
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JPanel;
import javax.swing.JTextPane;
import javax.swing.border.BevelBorder;

public class MainClass extends JPanel {

  public JTextPane pane;

  public JMenuBar menuBar;

  public MainClass() {
    menuBar = new JMenuBar();
    JMenu formatMenu = new JMenu("Justify");
    formatMenu.setMnemonic('J');

    MenuAction leftJustifyAction = new MenuAction("Left", new ImageIcon("left.gif"));
    MenuAction rightJustifyAction = new MenuAction("Right", new ImageIcon("right.gif"));
    MenuAction centerJustifyAction = new MenuAction("Center", new ImageIcon("center.gif"));
    MenuAction fullJustifyAction = new MenuAction("Full", new ImageIcon("full.gif"));

    JMenuItem item;
    item = formatMenu.add(leftJustifyAction);
    item.setMnemonic('L');
    item = formatMenu.add(rightJustifyAction);
    item.setMnemonic('R');
    item = formatMenu.add(centerJustifyAction);
    item.setMnemonic('C');
    item = formatMenu.add(fullJustifyAction);
    item.setMnemonic('F');

    menuBar.add(formatMenu);
    menuBar.setBorder(new BevelBorder(BevelBorder.RAISED));

  }

  class MenuAction extends AbstractAction {

    public MenuAction(String text, Icon icon) {
      super(text, icon);
    }

    public void actionPerformed(ActionEvent e) {
      try {
        pane.getStyledDocument().insertString(0,
            "Action [" + e.getActionCommand() + "] performed!\n", null);
      } catch (Exception ex) {
        ex.printStackTrace();
      }
    }
  }

  public static void main(String s[]) {

    MainClass example = new MainClass();
    example.pane = new JTextPane();
    example.pane.setPreferredSize(new Dimension(250, 250));
    example.pane.setBorder(new BevelBorder(BevelBorder.LOWERED));

    JFrame frame = new JFrame("Menu Example");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setJMenuBar(example.menuBar);
    frame.getContentPane().add(example.pane, BorderLayout.CENTER);
    frame.pack();
    frame.setVisible(true);
  }
}

           
         
  

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