79 lines
1.9 KiB
Java
79 lines
1.9 KiB
Java
import java.awt.*;
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import java.awt.event.*;
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import javax.swing.*;
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/**
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* @version 1.33 2007-06-12
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* @author Cay Horstmann
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*/
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public class CheckBoxTest
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{
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public static void main(String[] args)
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{
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EventQueue.invokeLater(new Runnable()
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{
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public void run()
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{
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CheckBoxFrame frame = new CheckBoxFrame();
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frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
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frame.setVisible(true);
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}
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});
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}
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}
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/**
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* A frame with a sample text label and check boxes for selecting font attributes.
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*/
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class CheckBoxFrame extends JFrame
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{
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public CheckBoxFrame()
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{
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setTitle("CheckBoxTest");
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setSize(DEFAULT_WIDTH, DEFAULT_HEIGHT);
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// add the sample text label
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label = new JLabel("The quick brown fox jumps over the lazy dog.");
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label.setFont(new Font("Serif", Font.PLAIN, FONTSIZE));
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add(label, BorderLayout.CENTER);
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// this listener sets the font attribute of
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// the label to the check box state
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ActionListener listener = new ActionListener()
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{
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public void actionPerformed(ActionEvent event)
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{
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int mode = 0;
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if (bold.isSelected()) mode += Font.BOLD;
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if (italic.isSelected()) mode += Font.ITALIC;
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label.setFont(new Font("Serif", mode, FONTSIZE));
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}
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};
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// add the check boxes
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JPanel buttonPanel = new JPanel();
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bold = new JCheckBox("Bold");
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bold.addActionListener(listener);
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buttonPanel.add(bold);
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italic = new JCheckBox("Italic");
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italic.addActionListener(listener);
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buttonPanel.add(italic);
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add(buttonPanel, BorderLayout.SOUTH);
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}
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public static final int DEFAULT_WIDTH = 300;
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public static final int DEFAULT_HEIGHT = 200;
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private JLabel label;
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private JCheckBox bold;
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private JCheckBox italic;
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private static final int FONTSIZE = 12;
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}
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