complete the code where it says // your code here package cp213;

import java.awt.GridLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.ItemEvent; import java.awt.event.ItemListener; import java.text.DateFormatSymbols; import java.util.ArrayList; import java.util.Arrays;

import javax.swing.BorderFactory; import javax.swing.ButtonGroup; import javax.swing.JButton; import javax.swing.JCheckBox; import javax.swing.JLabel; import javax.swing.JPanel; import javax.swing.JRadioButton; import javax.swing.JSeparator; import javax.swing.JSlider; import javax.swing.JSpinner; import javax.swing.JTextField; import javax.swing.SpinnerListModel; import javax.swing.SwingConstants; import javax.swing.event.ChangeEvent; import javax.swing.event.ChangeListener;

/** * Uses GUI widgets and listeners to illustrate the use of inner classes. * * @author your name here * @version 2022-07-09 */ @SuppressWarnings("serial") public class InnerClassPanel extends JPanel {

/** * An inner class that accesses the button. */ private class ButtonListener implements ActionListener {

@Override public void actionPerformed(final ActionEvent e) { final JButton source = (JButton) e.getSource(); InnerClassPanel.this.buttonPush = source.getText(); InnerClassPanel.this.label.setText(InnerClassPanel.this.buttonPush); System.out.println(InnerClassPanel.this.buttonPush); } }

/** * An inner class that accesses the check boxes. Updates the checkBoxesSelected * ArrayList depending on whether the matching check box is checked or not. * Requires examining the state change of the ItemEvent was SELECTED or * DESELECTED. Selected items are added to the checkBoxesSelected ArrayList, * deselected items are removed from the checkBoxesSelected ArrayList. */ private class CheckBoxListener implements ItemListener {

@Override public void itemStateChanged(final ItemEvent e) { // your code here

} }

/** * An inner class that accesses the check boxes. */ private class RadioButtonListener implements ActionListener {

@Override public void actionPerformed(final ActionEvent e) {

// your code here

} }

/** * An inner class that accesses the slider. */ private class SliderListener implements ChangeListener {

@Override public void stateChanged(final ChangeEvent e) { final JSlider source = (JSlider) e.getSource();

if (!source.getValueIsAdjusting()) { // Verifies that the slider has stopped moving.

// your code here

} } }

/** * An inner class that accesses the spinner. */ private class SpinnerListener implements ChangeListener {

@Override public void stateChanged(final ChangeEvent e) {

// your code here

} }

/** * An inner class that accesses the text field. */ private class TextFieldListener implements ActionListener {

@Override public void actionPerformed(final ActionEvent e) {

// your code here

} }

// Constants private static final int START = 0; private static final int END = 100; private static final int INC = 5; private static final String[] MONTH_STRINGS = new DateFormatSymbols().getMonths(); private static final SpinnerListModel MONTH_MODEL = new SpinnerListModel(MONTH_STRINGS);

// Attributes private String buttonPush = ""; private String radioButtonSet = ""; private int sliderSet = START; private String spinnerSet = ""; private String textEntry = "";

// GUI elements private final JButton button = new JButton("Push Me"); private final ArrayList checkBoxesSelected = new ArrayList<>(); private final JCheckBox ketchup = new JCheckBox("Ketchup"); private final JLabel label = new JLabel(); private final JCheckBox mustard = new JCheckBox("Mustard"); private final JCheckBox onions = new JCheckBox("Onions"); private final JSlider slider = new JSlider(JSlider.HORIZONTAL, START, END, INC); private final JSpinner spinner = new JSpinner(MONTH_MODEL); private final ButtonGroup starGroup = new ButtonGroup(); private final JRadioButton starTrek = new JRadioButton("Star Trek"); private final JRadioButton starWars = new JRadioButton("Star Wars"); private final JTextField textField = new JTextField();

/** * The panel constructor. Lays out the GUI elements then applies their * listeners. */ public InnerClassPanel() { this.layoutView(); this.registerListeners(); }

/** * Lays out the panel GUI widgets in order from top to bottom. */ private void layoutView() { // Add the radio buttons to the same button group. // This is a logical grouping, not a visible grouping. this.starGroup.add(this.starTrek); this.starGroup.add(this.starWars); // Define the panel border. this.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10)); // Uses the GridLayout to place the GUI widgets in 17 rows and 1 column. this.setLayout(new GridLayout(17, 1, 5, 5)); // Add the individual widgets to the panel. this.add(new JLabel("Button")); this.add(this.button); this.add(new JLabel("Slider")); this.add(this.slider); this.add(new JLabel("Text Field")); this.add(this.textField); this.add(new JLabel("Spinner")); this.add(this.spinner); this.add(new JLabel("Radio Buttons")); this.add(this.starTrek); this.add(this.starWars); this.add(new JLabel("Check Boxes")); this.add(this.mustard); this.add(this.onions); this.add(this.ketchup); this.add(new JSeparator(SwingConstants.HORIZONTAL)); this.add(this.label); }

/** * Assigns listeners to the panel GUI widgets. Each listener is an instantiation * of an inner class. */ private void registerListeners() { this.button.addActionListener(new ButtonListener());

// your code here

}

/** * @return a String version of the checkBoxesSelected ArrayList attribute */ public String CheckBoxesSelectedToString() { return Arrays.toString(this.checkBoxesSelected.toArray()); }

/** * @return this.buttonPush */ public String getButtonPush() { return this.buttonPush; }

/** * @return this.checkBoxesSelected */ public ArrayList getCheckBoxesSelected() { return this.checkBoxesSelected; }

/** * @return this.radioButtonSet */ public String getRadioButtonSet() { return this.radioButtonSet; }

/** * @return this.sliderSet */ public int getSliderSet() { return this.sliderSet; }

/** * @return this.spinnerSet */ public String getSpinnerSet() { return this.spinnerSet; }

/** * @return this.textEntry */ public String getTextEntry() { return this.textEntry; }

}

Answer rating: 100% (QA)

Heres the completed code with explanations for each listener 1 CheckBoxListener Override public void itemStateChangedItemEvent e JCheckBox source JChe... View the full answer