In this example we are going to see how to use JCheckBoxMenuItem Events With ActionListener
Java Code:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 | import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.KeyEvent; import javax.swing.AbstractButton; import javax.swing.Icon; import javax.swing.JCheckBoxMenuItem; import javax.swing.JFrame; import javax.swing.JMenu; import javax.swing.JMenuBar; import javax.swing.JMenuItem; 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("New", KeyEvent.VK_N); fileMenu.add(newMenuItem); JCheckBoxMenuItem caseMenuItem = new JCheckBoxMenuItem("Case Sensitive"); caseMenuItem.setMnemonic(KeyEvent.VK_C); fileMenu.add(caseMenuItem); ActionListener aListener = new ActionListener() { public void actionPerformed(ActionEvent event) { AbstractButton aButton = (AbstractButton) event.getSource(); boolean selected = aButton.getModel().isSelected(); String newLabel; Icon newIcon; if (selected) { newLabel = "A"; } else { newLabel = "B"; } aButton.setText(newLabel); } }; caseMenuItem.addActionListener(aListener); frame.setJMenuBar(menuBar); frame.setSize(350, 250); frame.setVisible(true); } } |
Output:
