package checkboxtest;
import java.awt.FlowLayout;
import java.awt.Font;
import java.awt.event.ItemListener;
import java.awt.event.ItemEvent;
import javax.swing.JFrame;
import javax.swing.JTextField;
import javax.swing.JCheckBox;

public class CheckBoxFrame extends JFrame {
    private JTextField textField;
    private JCheckBox boldJCheckBox;
    private 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{
        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 );

        }
    }
}