Java by API/javax.swing/JMenu

Содержание

1 JMenu: add(Component c)
2 JMenu: add(JMenuItem menuItem)
3 JMenu: addMenuListener(MenuListener l)
4 JMenu: addSeparator()
5 JMenu: add(String text)
6 JMenu: getMenuComponentCount()
7 JMenu: setMnemonic(KeyEvent.VK_O)
8 new JMenu(String s)

JMenu: add(Component c)

   <source lang="java">

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");
   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);
 }
 public static void main(String arg[]) {
   new Main();
 }

}

 </source>

JMenu: add(JMenuItem menuItem)

   <source lang="java">

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");
   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);
 }
 public static void main(String arg[]) {
   new Main();
 }

}

 </source>

JMenu: addMenuListener(MenuListener l)

   <source lang="java">

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.MenuEvent; import javax.swing.event.MenuListener; 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);
   fileMenu.addMenuListener(new MenuListener() {
     public void menuSelected(MenuEvent e) {
       System.out.println("menuSelected");
     }
     public void menuDeselected(MenuEvent e) {
       System.out.println("menuDeselected");
     }
     public void menuCanceled(MenuEvent e) {
       System.out.println("menuCanceled");
     }
   });
   // File->New, N - Mnemonic
   JMenuItem newMenuItem = new JMenuItem("New");
   fileMenu.add(newMenuItem);
   frame.setJMenuBar(menuBar);
   frame.setSize(350, 250);
   frame.setVisible(true);
 }

}

 </source>

JMenu: addSeparator()

   <source lang="java">

import java.awt.Event; import javax.swing.ButtonGroup; import javax.swing.JCheckBoxMenuItem; import javax.swing.JFrame; import javax.swing.JMenu; import javax.swing.JMenuBar; import javax.swing.JMenuItem; import javax.swing.JRadioButtonMenuItem; import javax.swing.KeyStroke; public class MainClass extends JFrame {

 public MainClass() {
   setDefaultCloseOperation(EXIT_ON_CLOSE);
   setJMenuBar(menuBar);
   JMenu fileMenu = new JMenu("File");
   JMenu elementMenu = new JMenu("Elements");
   fileMenu.setMnemonic("F");
   elementMenu.setMnemonic("E");
   // Construct the file pull down menu
   newItem = fileMenu.add("New");
   openItem = fileMenu.add("Open");
   closeItem = fileMenu.add("Close");
   fileMenu.addSeparator();
   saveItem = fileMenu.add("Save");
   saveAsItem = fileMenu.add("Save As...");
   JMenu colorMenu = new JMenu("Color");
   fileMenu.addSeparator();
   printItem = fileMenu.add("Print");
   newItem.setAccelerator(KeyStroke.getKeyStroke("N", Event.CTRL_MASK));
   openItem.setAccelerator(KeyStroke.getKeyStroke("O", Event.CTRL_MASK));
   saveItem.setAccelerator(KeyStroke.getKeyStroke("S", Event.CTRL_MASK));
   printItem.setAccelerator(KeyStroke.getKeyStroke("P", Event.CTRL_MASK));
   elementMenu.add(lineItem = new JRadioButtonMenuItem("Line", true));
   elementMenu
       .add(rectangleItem = new JRadioButtonMenuItem("Rectangle", false));
   elementMenu.add(circleItem = new JRadioButtonMenuItem("Circle", false));
   elementMenu.add(curveItem = new JRadioButtonMenuItem("Curve", false));
   ButtonGroup types = new ButtonGroup();
   types.add(lineItem);
   types.add(rectangleItem);
   types.add(circleItem);
   types.add(curveItem);
   lineItem.setAccelerator(KeyStroke.getKeyStroke("L", Event.CTRL_MASK));
   rectangleItem.setAccelerator(KeyStroke.getKeyStroke("E", Event.CTRL_MASK));
   circleItem.setAccelerator(KeyStroke.getKeyStroke("I", Event.CTRL_MASK));
   curveItem.setAccelerator(KeyStroke.getKeyStroke("V", Event.CTRL_MASK));
   elementMenu.addSeparator();
   elementMenu.add(colorMenu); // Add the sub-menu
   colorMenu.add(redItem = new JCheckBoxMenuItem("Red", false));
   colorMenu.add(yellowItem = new JCheckBoxMenuItem("Yellow", false));
   colorMenu.add(greenItem = new JCheckBoxMenuItem("Green", false));
   colorMenu.add(blueItem = new JCheckBoxMenuItem("Blue", true));
   // Add element color accelerators
   redItem.setAccelerator(KeyStroke.getKeyStroke("R", Event.CTRL_MASK));
   yellowItem.setAccelerator(KeyStroke.getKeyStroke("Y", Event.CTRL_MASK));
   greenItem.setAccelerator(KeyStroke.getKeyStroke("G", Event.CTRL_MASK));
   blueItem.setAccelerator(KeyStroke.getKeyStroke("B", Event.CTRL_MASK));
   menuBar.add(fileMenu);
   menuBar.add(elementMenu);
 }
 private JMenuBar menuBar = new JMenuBar();
 // File menu items
 private JMenuItem newItem, openItem, closeItem, saveItem, saveAsItem,
     printItem;
 // Element menu items
 private JRadioButtonMenuItem lineItem, rectangleItem, circleItem, curveItem,
     textItem;
 private JCheckBoxMenuItem redItem, yellowItem, greenItem, blueItem;
 public static void main(String[] args) {
   JFrame aWindow = new MainClass();
   aWindow.setSize(200,200);
   aWindow.setVisible(true);
 }

}

 </source>

JMenu: add(String text)

   <source lang="java">

import java.awt.Event; import javax.swing.ButtonGroup; import javax.swing.JCheckBoxMenuItem; import javax.swing.JFrame; import javax.swing.JMenu; import javax.swing.JMenuBar; import javax.swing.JMenuItem; import javax.swing.JRadioButtonMenuItem; import javax.swing.KeyStroke; public class MainClass extends JFrame {

 public MainClass() {
   setDefaultCloseOperation(EXIT_ON_CLOSE);
   setJMenuBar(menuBar);
   JMenu fileMenu = new JMenu("File");
   JMenu elementMenu = new JMenu("Elements");
   fileMenu.setMnemonic("F");
   elementMenu.setMnemonic("E");
   // Construct the file pull down menu
   newItem = fileMenu.add("New");
   openItem = fileMenu.add("Open");
   closeItem = fileMenu.add("Close");
   fileMenu.addSeparator();
   saveItem = fileMenu.add("Save");
   saveAsItem = fileMenu.add("Save As...");
   JMenu colorMenu = new JMenu("Color");
   fileMenu.addSeparator();
   printItem = fileMenu.add("Print");
   newItem.setAccelerator(KeyStroke.getKeyStroke("N", Event.CTRL_MASK));
   openItem.setAccelerator(KeyStroke.getKeyStroke("O", Event.CTRL_MASK));
   saveItem.setAccelerator(KeyStroke.getKeyStroke("S", Event.CTRL_MASK));
   printItem.setAccelerator(KeyStroke.getKeyStroke("P", Event.CTRL_MASK));
   elementMenu.add(lineItem = new JRadioButtonMenuItem("Line", true));
   elementMenu
       .add(rectangleItem = new JRadioButtonMenuItem("Rectangle", false));
   elementMenu.add(circleItem = new JRadioButtonMenuItem("Circle", false));
   elementMenu.add(curveItem = new JRadioButtonMenuItem("Curve", false));
   ButtonGroup types = new ButtonGroup();
   types.add(lineItem);
   types.add(rectangleItem);
   types.add(circleItem);
   types.add(curveItem);
   lineItem.setAccelerator(KeyStroke.getKeyStroke("L", Event.CTRL_MASK));
   rectangleItem.setAccelerator(KeyStroke.getKeyStroke("E", Event.CTRL_MASK));
   circleItem.setAccelerator(KeyStroke.getKeyStroke("I", Event.CTRL_MASK));
   curveItem.setAccelerator(KeyStroke.getKeyStroke("V", Event.CTRL_MASK));
   elementMenu.addSeparator();
   elementMenu.add(colorMenu); // Add the sub-menu
   colorMenu.add(redItem = new JCheckBoxMenuItem("Red", false));
   colorMenu.add(yellowItem = new JCheckBoxMenuItem("Yellow", false));
   colorMenu.add(greenItem = new JCheckBoxMenuItem("Green", false));
   colorMenu.add(blueItem = new JCheckBoxMenuItem("Blue", true));
   // Add element color accelerators
   redItem.setAccelerator(KeyStroke.getKeyStroke("R", Event.CTRL_MASK));
   yellowItem.setAccelerator(KeyStroke.getKeyStroke("Y", Event.CTRL_MASK));
   greenItem.setAccelerator(KeyStroke.getKeyStroke("G", Event.CTRL_MASK));
   blueItem.setAccelerator(KeyStroke.getKeyStroke("B", Event.CTRL_MASK));
   menuBar.add(fileMenu);
   menuBar.add(elementMenu);
 }
 private JMenuBar menuBar = new JMenuBar();
 // File menu items
 private JMenuItem newItem, openItem, closeItem, saveItem, saveAsItem,
     printItem;
 // Element menu items
 private JRadioButtonMenuItem lineItem, rectangleItem, circleItem, curveItem,
     textItem;
 private JCheckBoxMenuItem redItem, yellowItem, greenItem, blueItem;
 public static void main(String[] args) {
   JFrame aWindow = new MainClass();
   aWindow.setSize(200,200);
   aWindow.setVisible(true);
 }

}

 </source>

JMenu: getMenuComponentCount()

   <source lang="java">

import java.awt.ruponent; import java.awt.ruponentOrientation; import java.awt.Container; import java.awt.FlowLayout; import java.awt.event.WindowAdapter; import java.awt.event.WindowEvent; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JMenu; public class MainClass extends JFrame {

 public MainClass() {
   super("MainClass");
   Container contentPane = getContentPane();
   contentPane.setLayout(new FlowLayout());
   contentPane.add(new JButton("OK"));
   contentPane.add(new JButton("Cancel"));
   applyOrientation(this, ComponentOrientation.RIGHT_TO_LEFT);
 }
 public static void main(String[] argv) {
   JFrame frame = new MainClass();
   frame.addWindowListener(new WindowAdapter() {
     public void windowClosing(WindowEvent e) {
       System.exit(0);
     }
   });
   frame.pack();
   frame.setVisible(true);
 }
 private void applyOrientation(Component c, ComponentOrientation o) {
   c.setComponentOrientation(o);
   if (c instanceof JMenu) {
     JMenu menu = (JMenu) c;
     int ncomponents = menu.getMenuComponentCount();
     for (int i = 0; i < ncomponents; ++i) {
       applyOrientation(menu.getMenuComponent(i), o);
     }
   } else if (c instanceof Container) {
     Container container = (Container) c;
     int ncomponents = container.getComponentCount();
     for (int i = 0; i < ncomponents; ++i) {
       applyOrientation(container.getComponent(i), o);
     }
   }
 }

}

 </source>

JMenu: setMnemonic(KeyEvent.VK_O)

   <source lang="java">

import java.awt.event.KeyEvent; import javax.swing.ButtonGroup; import javax.swing.JFrame; import javax.swing.JMenu; import javax.swing.JMenuBar; import javax.swing.JRadioButtonMenuItem; public class MainClass {

 public static void main(String args[]) {
   JFrame f = new JFrame("JRadioButtonMenuItem Sample");
   f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   JMenuBar bar = new JMenuBar();
   JMenu menu = new JMenu("Options");
   menu.setMnemonic(KeyEvent.VK_O);
   ButtonGroup group = new ButtonGroup();
   JRadioButtonMenuItem menuItem = new JRadioButtonMenuItem("A");
   group.add(menuItem);
   menu.add(menuItem);
   menuItem = new JRadioButtonMenuItem("B");
   group.add(menuItem);
   menu.add(menuItem);
   menuItem = new JRadioButtonMenuItem("C");
   group.add(menuItem);
   menu.add(menuItem);
   bar.add(menu);
   f.setJMenuBar(bar);
   f.setSize(300, 200);
   f.setVisible(true);
 }

}

 </source>

new JMenu(String s)

   <source lang="java">

import java.awt.event.KeyEvent; 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);
   
   frame.setJMenuBar(menuBar);
   frame.setSize(350, 250);
   frame.setVisible(true);
 }

}

 </source>

Java by API/javax.swing/JMenu

Содержание

JMenu: add(Component c)

JMenu: add(JMenuItem menuItem)

JMenu: addMenuListener(MenuListener l)

JMenu: addSeparator()

JMenu: add(String text)

JMenu: getMenuComponentCount()

JMenu: setMnemonic(KeyEvent.VK_O)

new JMenu(String s)

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