import java.awt.*; import java.awt.event.*; import javax.swing.*;

public class CheckBoxTest extends JFrame { private JTextField field; private JCheckBox bold , italic; public CheckBoxTest(){ super("JCheckBox Test"); Container container = getContentPane(); container.setLayout(new FlowLayout()); field = new JTextField("Watch the font style change ", 20); field.setFont(new Font("Serif", Font.PLAIN,14)); container.add(field); bold = new JCheckBox("Bold"); container.add(bold); italic = new JCheckBox("Italic"); container.add(italic); CheckBoxHandler handler = new CheckBoxHandler(); bold.addItemListener(handler); italic.addItemListener(handler); setSize(275,100); setVisible(true); } public static void main(String args[]){ CheckBoxTest application = new CheckBoxTest(); application.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); } private class CheckBoxHandler implements ItemListener{ private int valBold = Font.PLAIN; private int valItalic = Font.PLAIN; public void itemStateChanged(ItemEvent event) { if( event.getSource() == bold) valBold = bold.isSelected() ? Font.BOLD : Font.PLAIN; if ( event.getSource() == italic ) valItalic = italic.isSelected() ? Font.ITALIC : Font.PLAIN; field.setFont ( new Font("Serif", valBold + valItalic , 14)); } } } [/CODE]