JRadioButtonMenuItem: setSelected(boolean b) : JRadioButtonMenuItem « javax.swing « Java by API

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

JRadioButtonMenuItem: setSelected(boolean b)

  
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.ButtonGroup;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JRadioButtonMenuItem;

public class Main extends JFrame {
  public static final String FontName[] = { "Serif", "SansSerif", "Courier" };
  private Font[] fonts = new Font[FontName.length];
  protected JMenuItem[] fontMenus;
  public Main() {
    super();
    setSize(450, 350);    
    for (int k = 0; k < FontName.length; k++)
      fonts[k] = new Font(FontName[k], Font.PLAIN, 12);

    JMenuBar menuBar = createMenuBar();
    setJMenuBar(menuBar);

    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    setVisible(true);
  }

  protected JMenuBar createMenuBar() {
    final JMenuBar menuBar = new JMenuBar();

    JMenu mFont = new JMenu("Font");
    mFont.setMnemonic('o');

    ButtonGroup group = new ButtonGroup();
    fontMenus = new JMenuItem[FontName.length];
    for (int k = 0; k < FontName.length; k++) {
      int m = k + 1;
      fontMenus[k] = new JRadioButtonMenuItem(m + " " + FontName[k]);
      boolean selected = (k == 0);
      fontMenus[k].setSelected(selected);
      fontMenus[k].setMnemonic('1' + k);
      fontMenus[k].setFont(fonts[k]);
      fontMenus[k].addActionListener(new ActionListener() {

        public void actionPerformed(ActionEvent arg0) {
          System.out.println(((JComponent) arg0.getSource())
              .getFont());

        }

      });
      group.add(fontMenus[k]);
      mFont.add(fontMenus[k]);
    }

    menuBar.add(mFont);

    return menuBar;
  }

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

   
    
  

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