MyDemo

import java.awt.*;import java.awt.event.*;import javax.swing.*;public class MyDemo extends JFrame{private JLabel label;private JPanel buttonPanel;private ButtonGroup buttonGroup;private JRadioButton blod,italic;public MyDemo(){super("MyDemo");setSize(300,100);setLocation(350,260);try{UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());}catch(Exception e){}Container container = getContentPane();container.setLayout(new FlowLayout());label = new JLabel("This is test Label!");label.setFont(new Font("Serif",Font.PLAIN,14));container.add(label);buttonGroup = new ButtonGroup();blod = new JRadioButton("粗体",false);italic = new JRadioButton("斜体",false);blod.setFont(new Font("Serif",Font.PLAIN,14));italic.setFont(new Font("Serif",Font.PLAIN,14));buttonGroup.add(blod);buttonGroup.add(italic);RadioButtonHandler handler = new RadioButtonHandler();blod.addItemListener(handler);italic.addItemListener(handler);buttonPanel = new JPanel();buttonPanel.add(blod);buttonPanel.add(italic);container.add(buttonPanel,BorderLayout.SOUTH);setVisible(true);setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);}public static void main(String[] args){MyDemo application = new MyDemo();}private class RadioButtonHandler implements ItemListener{public void itemStateChanged(ItemEvent event){if(blod.isSelected())label.setFont(new Font("Serif",Font.BOLD,14));else if(italic.isSelected())label.setFont(new Font("Serif",Font.ITALIC,14));}}}

2011-02-22  21:38:23