Concepts of Programming Languages

660 Chapter 14 Exception Handling and Event Handling

italicFont = new Font("Serif", Font.ITALIC, 16);

boldItalicFont = new Font("Serif", Font.BOLD +

Font.ITALIC, 16);

} // End of the constructor for RadioB

// The event handler

public void itemStateChanged (ItemEvent e) {

// Determine which button is on and set the font

// accordingly

if (plain.isSelected())

text.setFont(plainFont);

else if (bold.isSelected())

text.setFont(boldFont);

else if (italic.isSelected())

text.setFont(italicFont);

else if (boldItalic.isSelected())

text.setFont(boldItalicFont);

} // End of itemStateChanged

// The main method

public static void main(String[] args) {

// Create the window frame

JFra me myFrame = new JFrame(" Radio button

example");

// Create the content pane and set it to the frame

JComponent myContentPane = new RadioB();

myContentPane.setOpaque(true);

myFrame.setContentPane(myContentPane);

// Display the window.

myFrame.pack();

myFrame.setVisible(true);

}

} // End of RadioB

The RadioB.java application produces the screen shown in Figure 14.2.

Figure 14.2

Output of
RadioB.java