Overlap of components in the panel

Question

This is for an application which computes the total cost of configured laptop.
The main window has 2 panels. The top panel should have a label, and textfield. 3 comboboxes, radiobuttton group, 2 check boxes. I am not able to display the components next to each other. They overlap in the top panel.(This panel has a GridLayout) The code is as follows(does not have all the components yet)
The 2nd panel has a 2 buttons and textarea. Can anybody please help.
import java.awt.event.*;
import javax.swing.*;
import java.awt.*;
import java.util.*;
public class WClass extends JFrame implements ActionListener
     private Container pane;
     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;
     int row;
     public WClass()
          super("Laptop Computer Configuration");
          P1 = new JPanel();
          P1.setLayout(new GridLayout(2,4));
          P2 = new JPanel(new BorderLayout());
          name = new JLabel("Customer Name");
          add(name);
          Custname = new JTextField(10);
          Custname.addActionListener(this);
          add(Custname);
          String p[] = {"Pentium 4", "Celeron", "AMD", "Intel Centrino"};
          processor = new JComboBox(p);
          processor.setMaximumRowCount(3);
          processor.addItemListener(
                         new ItemListener()
               public void itemStateChanged(ItemEvent e)
                    if(e.getStateChange() == ItemEvent.SELECTED)
                    row = processor.getSelectedIndex();
          add(processor);
          String h[] = {"30 GB", "40 GB", "60 GB"};
          harddrive = new JComboBox(h);
          harddrive.setMaximumRowCount(2);
          harddrive.addItemListener(
                         new ItemListener()
               public void itemStateChanged(ItemEvent e)
                    if(e.getStateChange() == ItemEvent.SELECTED)
                    row = harddrive.getSelectedIndex();
          add(harddrive);
     add(P1, BorderLayout.NORTH);
          submit = new JButton("Submit");
          clear = new JButton("Clear");
          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)
import javax.swing.JFrame;
public class Win
     public static void main(String args[])
          WClass window = new WClass();
          window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE );
          window.setSize( 500,400);
          window.setVisible( true);
}

Answer 1

It is not easy to read your code due to lack of formatting. When you post code you should highlight it and click the "code" button. This preserves the formatting.
I see some lines that say "add(whatever)". Shouldn't these be "P1.add(whatever)". In other words you want to be adding components to a panel rather than the base JFrame if I understand your requirement..