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import java.awt.Font;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import javax.swing.JFrame;
import javax.swing.JTextField;
import javax.swing.JCheckBox;
public class CheckBoxFrame extends JFrame {
private final JTextField textField;
private final JCheckBox boldJCheckBox;
private final JCheckBox italicJCheckBox;
public CheckBoxFrame() {
super("JCheckBox Test");
setLayout(new FlowLayout());
textField = new JTextField("Watch the font style change", 20);
textField.setFont(new Font("Serif", Font.PLAIN, 14));
add(textField);
boldJCheckBox = new JCheckBox("Bold");
italicJCheckBox = new JCheckBox("Italic");
add(boldJCheckBox);
add(italicJCheckBox);
CheckBoxHandler handler = new CheckBoxHandler();
boldJCheckBox.addItemListener(handler);
italicJCheckBox.addItemListener(handler);
}
private class CheckBoxHandler implements ItemListener {
@Override
public void itemStateChanged(ItemEvent event) {
Font font = null;
if (boldJCheckBox.isSelected() && italicJCheckBox.isSelected())
font = new Font("Serif", Font.BOLD + Font.ITALIC, 14);
else if (boldJCheckBox.isSelected())
font = new Font("Serif", Font.BOLD, 14);
else if (italicJCheckBox.isSelected())
font = new Font("Serif", Font.ITALIC, 14);
else
font = new Font("Serif", Font.PLAIN, 14);
textField.setFont(font);
}
}
}
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