private JMenuBar menuBar;

private JLabel Lbl1;

private JLabel Lbl2;

private JLabel RedLbl;

private JLabel GreenLbl;

private JLabel BlueLbl;

private JTextField RGBTxtField;

private JPanel Cpanel;

public JSlider RSlider;

public JSlider GSlider;

public JSlider BSlider;

static int R = 214;

static int G = 217;

static int B = 223;

// Constructor

public Preferences() {

this.setTitle("Preferences");

this.setSize(400, 200);

// menu generate method

generateMenu();

this.setJMenuBar(menuBar);

// pane with null layout

JPanel contentPane = new JPanel(null);

contentPane.setPreferredSize(new Dimension(400, 200));

contentPane.setBackground(new Color(192, 192, 192));

// adding components to contentPane panel

// adding panel to JFrame and setting of window position and close

// operation

getContentPane().add(contentPane);

contentPane.setLayout(null);

Cpanel = new JPanel();

Cpanel.setBounds(287, 51, 103, 87);

Cpanel.setBackground(new Color(R, G, B));

contentPane.add(Cpanel);

Cpanel.setVisible(false);

RGBTxtField = new JTextField();

RGBTxtField.setBounds(287, 11, 103, 40);

RGBTxtField.setFont(new Font("Consolas", Font.PLAIN, 12));

RGBTxtField.setToolTipText("RGB");

RGBTxtField.setEditable(false);

RGBTxtField.setText("(" + R + "," + G + "," + B + ")");

contentPane.add(RGBTxtField);

RGBTxtField.setColumns(10);

RGBTxtField.setVisible(false);

Lbl1 = new JLabel("This is the Preferences Frame");

Lbl1.setBounds(29, 76, 360, 40);

Lbl1.setFont(new Font("Consolas", Font.PLAIN, 20));

// Lbl1.

contentPane.add(Lbl1);

Lbl1.setVisible(true);

Lbl2 = new JLabel("This changes the color of the background");

Lbl2.setBounds(0, 0, 319, 40);

Lbl2.setFont(new Font("Consolas", Font.PLAIN, 12));

contentPane.add(Lbl2);

Lbl2.setVisible(false);

RedLbl = new JLabel("Red");

RedLbl.setBounds(19, 60, 32, 14);

contentPane.add(RedLbl);

RedLbl.setVisible(false);

GreenLbl = new JLabel("Green");

GreenLbl.setBounds(10, 90, 41, 14);

contentPane.add(GreenLbl);

GreenLbl.setVisible(false);

BlueLbl = new JLabel("Blue");

BlueLbl.setBounds(19, 124, 32, 14);

contentPane.add(BlueLbl);

BlueLbl.setVisible(false);

RSlider = new JSlider(JSlider.HORIZONTAL, 0, 255, 0);

RSlider.setBounds(61, 51, 200, 23);

contentPane.add(RSlider);

RSlider.setVisible(false);

RSlider.setValue(R); // set the current R value of the slider to the R

// value of the background

RSlider.addChangeListener(new ChangeListener() {

public void stateChanged(ChangeEvent event) {

// SliderAction();

JSlider source = (JSlider) event.getSource();

R = (int) source.getValue();

// System.out.println("Red = " + R);// for debugging

Cpanel.setBackground(new Color(R, G, B)); // preview pane

MyProject2.contentPane.setBackground(new Color(R, G, B)); // change

// the

// background

// color

// of

// the

// contentPane

// of

// the

// Main

// class

RGBTxtField.setText("(" + R + "," + G + "," + B + ")");

}

});

GSlider = new JSlider(JSlider.HORIZONTAL, 0, 255, 0);

GSlider.setBounds(61, 81, 200, 23);

contentPane.add(GSlider);

GSlider.setVisible(false);

GSlider.setValue(G); // set the current G value of the slider to the G

// value of the background

GSlider.addChangeListener(new ChangeListener() {

public void stateChanged(ChangeEvent event) {

JSlider source = (JSlider) event.getSource();

G = (int) source.getValue();

// System.out.println("Green = " + G); // for debugging

Cpanel.setBackground(new Color(R, G, B)); // preview pane

MyProject2.contentPane.setBackground(new Color(R, G, B)); // change

// the

// background

// color

// of

// the

// contentPane

// of

// the

// Main

// class

RGBTxtField.setText("(" + R + "," + G + "," + B + ")");

}

});

BSlider = new JSlider(JSlider.HORIZONTAL, 0, 255, 0);

BSlider.setBounds(61, 115, 200, 23);

contentPane.add(BSlider);

BSlider.setVisible(false);

BSlider.setValue(B); // set the current B value of the slider to the B

// value of the background

BSlider.addChangeListener(new ChangeListener() {

public void stateChanged(ChangeEvent event) {

JSlider source = (JSlider) event.getSource();

B = (int) source.getValue();

// System.out.println("Blue = " + B);// for debugging

Cpanel.setBackground(new Color(R, G, B)); // preview pane

MyProject2.contentPane.setBackground(new Color(R, G, B)); // change

// the

// background

// color

// of

// the

// contentPane

// of

// the

// Main

// class

RGBTxtField.setText("(" + R + "," + G + "," + B + ")");

}

});

this.setDefaultCloseOperation(JFrame.HIDE_ON_CLOSE);

this.setResizable(false);

this.setLocationRelativeTo(null);

this.pack();

this.setVisible(true);

}

// method for generate menu

public void generateMenu() {

menuBar = new JMenuBar();

JMenu Background = new JMenu("Background");

JMenuItem Color = new JMenuItem("Color");

Color.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent bc) {

Lbl1.setVisible(false); // make this 'disapear' when the

// menuItem is clicked

Lbl2.setVisible(true);

RedLbl.setVisible(true);

GreenLbl.setVisible(true);

BlueLbl.setVisible(true);

Cpanel.setVisible(true);

RGBTxtField.setVisible(true);

RSlider.setVisible(true);

GSlider.setVisible(true);

BSlider.setVisible(true);

}

});

// add menuItems to menus

Background.add(Color);

menuBar.add(Background);

}

}