Re-set Combobox, radiobutton and checkboxes

How do I re-set the combobox, radiobutton, checkboxes at the click ofclear button?

import java.awt.event.*;

import javax.swing.*;

import java.awt.*;

import java.util.*;

public class WClass extends JFrame implements ActionListener

{

Computer computer = new Computer();

private JPanel P1;

private JPanel P2;

private JButton submit;

private JButton clear;

private JTextArea Out;

private JLabel name;

private JTextField Custname;

private JComboBox processor;

private JComboBox harddrive;

private JRadioButton ram1;

private JRadioButton ram2;

private JRadioButton ram3;

private JPanel radiopanel;

private ButtonGroup radiogroup;

private JComboBox processorsd;

private JLabel L1;

private JCheckBox printer;

private JCheckBox lan;

private JLabel L2;

private JCheckBox fpy;

private JCheckBox dvd;

private JCheckBox cdrw;

private JLabel L3;

private JLabel L4;

private JLabel L5;

private JLabel L6;

private JLabel L7;

private JLabel L8;

private JLabel L9;

private Container c;

int row;

float prncost = 50f;

float wlan = 110f;

float fppy = 110f;

float dvdw = 220f;

float cdw = 20f;

float Ram1 = 0f;

float Ram2 = 60f;

public WClass()

{

super("Laptop Configuration");

P1 = new JPanel();

P1.setLayout(new GridLayout(10,2,5,10));

P2 = new JPanel(new BorderLayout());

name = new JLabel("Customer Name");

P1.add(name);

Custname = new JTextField(10);

Custname.addActionListener(this);

P1.add(Custname);

L3 = new JLabel("Processor");

P1.add(L3);

String p[] = {"Pentium 4", "Celeron", "AMD", "Intel Centrino"};

processor = new JComboBox(p);

processor.setMaximumRowCount(3);

P1.add(processor);

L4 = new JLabel("Hard Disk");

P1.add(L4);

String h[] = {"30 GB", "40 GB", "60 GB"};

harddrive = new JComboBox(h);

harddrive.setMaximumRowCount(2);

P1.add(harddrive);

L5 = new JLabel("RAM");

P1.add(L5);

radiopanel = new JPanel();

radiopanel.setLayout(new GridLayout(1,2));

ram1 = new JRadioButton("256 MB", true);

ram2 = new JRadioButton("512 MB", false);

radiopanel.add(ram1);

radiopanel.add(ram2);

radiogroup = new ButtonGroup();

radiogroup.add(ram1);

radiogroup.add(ram2);

P1.add(radiopanel);

L6 = new JLabel("Processor Speed");

P1.add(L6);

String ps[] = {"1.8 GHz", "2.2 GHz", "2.8 GHz"};

processorsd = new JComboBox(ps);

processorsd.setMaximumRowCount(2);

P1.add(processorsd);

L1 = new JLabel("Additional Accessories");

P1.add(L1);

printer = new JCheckBox("Ink Jet Printer");

lan = new JCheckBox("Inbuilt Wireless LAN");

P1.add(printer);

L7 = new JLabel("");

P1.add(L7);

P1.add(lan);

L2 = new JLabel("Drives");

P1.add(L2);

fpy = new JCheckBox("Floppy(External)");

dvd = new JCheckBox("DVD Writer");

cdrw = new JCheckBox("CD Writer");

P1.add(fpy);

L8 = new JLabel("");

P1.add(L8);

P1.add(dvd);

L9 = new JLabel("");

P1.add(L9);

P1.add(cdrw);

c = getContentPane();

add(P1, BorderLayout.NORTH);

submit = new JButton("Submit");

submit.addActionListener(this);

clear = new JButton("Clear");

clear.addActionListener(this);

Out = new JTextArea(10,5);

P2.add(submit, BorderLayout.WEST);

P2.add(clear, BorderLayout.EAST);

P2.add(Out,BorderLayout.CENTER);

add(P2, BorderLayout.SOUTH);

}

public void actionPerformed(ActionEvent event)

{

if(event.getSource() == submit)

{

computer.setName(Custname.getText());

computer.setProcessor(processor.getSelectedIndex());

computer.setHarddisk(harddrive.getSelectedIndex());

if(ram1.isSelected())

computer.setRam(Ram1);

if(ram2.isSelected())

computer.setRam(Ram2);

computer.setProcessorSpeed(processorsd.getSelectedIndex());

if(printer.isSelected())

computer.setPrinter(prncost);

if(lan.isSelected())

computer.setWireless(wlan);

if(fpy.isSelected())

computer.setFloppy(fppy);

if(dvd.isSelected())

computer.setDVD(dvdw);

if(cdrw.isSelected())

computer.setCdw(cdw);

Out.append("Computer Configuration for " + computer.getName() + "\n\n");

Out.append("Processor:\t\t\t " +computer.getProcessor()+ "\n");

Out.append("HardDisk: \t\t\t" + computer.getHarddisk() + "\n");

Out.append("RAM:\t\t\t" + computer.getRam() + "\n");

Out.append("ProcessorSpeed:\t\t" +computer.getProcessorSpeed() + "\n");

Out.append("Additional Accessories \t\t" + computer.getaa() + "\n");

Out.append("Drives :\t\t\t" + computer.getdrives() + "\n");

Out.append("\n");

Out.append("Total\t\t\t " + computer.getTotal() + "\n");

}

if(event.getSource() == clear)

{

Custname.setText("");

Out.setText("");

}

}

}

[5244 byte] By [leogala] at [2007-10-1 7:35:50]