Notes

FIG:12.15
##ButtonFrame

import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JOptionPane;

public class ButtonFrame extends JFrame {

private final JButton plainButton;
private final JButton fancyButton;

public ButtonFrame() {
super("Testing Buttons");
setLayout(new FlowLayout());

plainButton = new JButton("Plain Button");
add(plainButton);

Icon bug1 = new ImageIcon(getClass().getResource("bug1.gif"));
Icon bug2 = new ImageIcon(getClass().getResource("bug2.gif"));
fancyButton = new JButton("Fancy Button", bug1);
fancyButton.setRolloverIcon(bug2);
add(fancyButton);

ButtonHandler handler = new ButtonHandler();
fancyButton.addActionListener(handler);
plainButton.addActionListener(handler);
}

private class ButtonHandler implements ActionListener {

@Override
public void actionPerformed(ActionEvent event) {
JOptionPane.showMessageDialog(ButtonFrame.this, String.format(
"You pressed: %s", event.getActionCommand()));
}
}
}


FIG:12.16
##ButtonTest

import javax.swing.JFrame;

public class ButtonTest {

public static void main(String[] args) {
ButtonFrame buttonFrame = new ButtonFrame();
buttonFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
buttonFrame.setSize(275, 110);
buttonFrame.setVisible(true);

}
}


FIG:12.17
##CheckBoxFrame

import java.awt.Font;
import java.awt.FlowLayout;
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("CheckBox 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);
}
}
}



FIG:12.18
##CheckBoxTest

import javax.swing.JFrame;

public class CheckBoxTest {

public static void main(String[] args) {
CheckBoxFrame checkBoxFrame = new CheckBoxFrame();
checkBoxFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
checkBoxFrame.setSize(275, 100);
checkBoxFrame.setVisible(true);
}
}


FIG:12.19
##RadioButtonFrame

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.JRadioButton;
import javax.swing.ButtonGroup;

public class RadioButtonFrame extends JFrame {

private final JTextField textField;
private final Font plainFont;
private final Font boldFont;
private final Font italicFont;
private final Font boldItalicFont;
private final JRadioButton plainJRadioButton;
private final JRadioButton boldJRadioButton;
private final JRadioButton italicJRadioButton;
private final JRadioButton boldItalicJRadioButton;
private final ButtonGroup radioGroup;

public RadioButtonFrame() {
super("RadioButton Test");
setLayout(new FlowLayout());

textField = new JTextField("Watch the font style change", 25);
add(textField);

plainJRadioButton = new JRadioButton("Plain", true);
boldJRadioButton = new JRadioButton("Bold", false);
italicJRadioButton = new JRadioButton("Italic", false);
boldItalicJRadioButton = new JRadioButton("Bold/Italic", false);
add(plainJRadioButton);
add(boldJRadioButton);
add(italicJRadioButton);
add(boldItalicJRadioButton);
radioGroup = new ButtonGroup();
radioGroup.add(plainJRadioButton);
radioGroup.add(boldJRadioButton);
radioGroup.add(italicJRadioButton);
radioGroup.add(boldItalicJRadioButton);

plainFont = new Font("Serif", Font.PLAIN, 14);
boldFont = new Font("Serif", Font.BOLD, 14);
italicFont = new Font("Serif", Font.ITALIC, 14);
boldItalicFont = new Font("Serif", Font.BOLD + Font.ITALIC, 14);
textField.setFont(plainFont);
plainJRadioButton.addItemListener(
new RadioButtonHandler(plainFont));
boldJRadioButton.addItemListener(
new RadioButtonHandler(boldFont));
italicJRadioButton.addItemListener(
new RadioButtonHandler(italicFont));
boldItalicJRadioButton.addItemListener(
new RadioButtonHandler(boldItalicFont));
}

private class RadioButtonHandler implements ItemListener {

private Font font;

public RadioButtonHandler(Font f) {
font = f;
}

@Override
public void itemStateChanged(ItemEvent event) {
textField.setFont(font);
}
}
}


FIG:12.20

##RadioButtonTest

import javax.swing.JFrame;

public class RadioButtonTest {

public static void main(String[] args) {
RadioButtonFrame radioButtonFrame = new RadioButtonFrame();
radioButtonFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
radioButtonFrame.setSize(300, 100);
radioButtonFrame.setVisible(true);
}
}




FIG:12.21
##ComboBoxFrame

import java.awt.FlowLayout;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;

public class ComboBoxFrame extends JFrame {

private final JComboBox<String> imagesJComboBox;
private final JLabel label;

private static final String[] names
= {"bug1.gif", "bug2.gif", "travelbug.gif", "buganim.gif"};
private final Icon[] icons = {
new ImageIcon(getClass().getResource(names[0])),
new ImageIcon(getClass().getResource(names[1])),
new ImageIcon(getClass().getResource(names[2])),
new ImageIcon(getClass().getResource(names[3]))};

public ComboBoxFrame() {
super("Testing JComboBox");
setLayout(new FlowLayout());

imagesJComboBox = new JComboBox<String>(names);
imagesJComboBox.setMaximumRowCount(3);

imagesJComboBox.addItemListener(
new ItemListener() {
@Override
public void itemStateChanged(ItemEvent event) {
if (event.getStateChange() == ItemEvent.SELECTED) {
label.setIcon(icons[imagesJComboBox.getSelectedIndex()]);
}
}
}
);

add(imagesJComboBox);
label = new JLabel(icons[0]);
add(label);
}
}


FIG:12.22
##ComboBoxFrameTest

import javax.swing.JFrame;

public class ComboBoxTest {

public static void main(String[] args) {
ComboBoxFrame comboBoxFrame = new ComboBoxFrame();
comboBoxFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
comboBoxFrame.setSize(350, 150);
comboBoxFrame.setVisible(true);
}
}


FIG:12.23
##ListFrame