GUI Font

/*

Chapter 7 Sample Program: Creating buttons w/ Button Handler using 2 classes.

*/

import javax.swing.*;

import java.awt.*;

import java.awt.event.*;

class ChangeFont extends JFrame implements ActionListener

{

private static final int FRAME_WIDTH = 300;

private static final int FRAME_HEIGHT = 200;

private static final int FRAME_X_ORIGIN = 150;

private static final int FRAME_Y_ORIGIN = 250;

private static final int BUTTON_WIDTH = 80;

private static final int BUTTON_HEIGHT = 50;

private JButton okButton;

private JLabel promptText1;

public ChangeFont( )

{

setTitle("Sample Frame with Button Events");

setSize(FRAME_WIDTH, FRAME_HEIGHT);

setLocation(FRAME_X_ORIGIN, FRAME_Y_ORIGIN);

setResizable(false);

Container contentPane = getContentPane();

contentPane.setLayout(null);

contentPane.setBackground(Color.white);

okButton = new JButton("Ok");

okButton.setBounds(110, 100, BUTTON_WIDTH, BUTTON_HEIGHT);

okButton.setFont(new Font("Serif", Font.PLAIN, 18));

contentPane.add(okButton);

promptText1 = new JLabel();

promptText1.setText("Code:");

promptText1.setBounds(20, 20, 150, 50); // 30 from left, 20 from top, 150 length, 25 height

promptText1.setFont(new Font("Serif", Font.BOLD, 48));

promptText1.setForeground(Color.red);

contentPane.add(promptText1);

okButton.addActionListener(this);

setDefaultCloseOperation(EXIT_ON_CLOSE);

}

public void actionPerformed(ActionEvent event)

{

JButton clickedButton = (JButton) event.getSource();

String buttonText = clickedButton.getText();

setTitle("You clicked " + buttonText);

}

public static void main(String[] args)

{

ChangeFont frame = new ChangeFont();

frame.setVisible(true);

}

} // End of class