Java SE (Java Platform, Standard Edition)

I am trying to get my panels set up to where I have one on top with 3 sub-panels, and then the one on the bottom. In the first panel, the middle sub-panel is supposed to extend vertically to its maximum, so that the bottom sub-panel is at the bottom, right on top of the second main panel. But right now, the program is acting like the 3 sub panels are supposed to be together at the top.

An image of what I am looking for is here: http://www.fileden.com/files/2010/3/9/2788777//jtextarea.png. What do I do?

package sscce;

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.GridBagConstraints;
import java.awt.Insets;

import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextArea;
import javax.swing.WindowConstants;

public class SSCCE
{
    public SSCCE()
    {
        final int colsLeft = 5, colsRight = 40 - colsLeft;
        final JFrame f = new JFrame();
        final JPanel p[] = {new JPanel(), new JPanel()};
        final JPanel subp[] = {new JPanel(), new JPanel(), new JPanel()};
        final JTextArea t[] =
            {cTA(colsLeft, "TextArea0"), cTA(colsRight, "TextArea1"),
            cTA(colsLeft, "TextArea2"), cTA(colsRight, "TextArea3"),
            cTA(colsLeft, "TextArea3"), cTA(colsRight, "TextArea4")};
        subp[0].setBackground(Color.RED);
        subp[1].setBackground(Color.GREEN);
        subp[2].setBackground(Color.BLUE);
        subp[0].add(t[0]);
        subp[0].add(t[1]);
        subp[1].add(t[2]);
        subp[1].add(t[3]);
        subp[2].add(t[4]);
        subp[2].add(t[5]);
        addItem("A1", 1, 1, p[0], subp[0], 100, 0);
        addItem("A2", 1, 1, p[0], subp[1], 100, 100);
        addItem("A3", 1, 1, p[0], subp[2], 100, 0);
        addItem("A1", 1, 1, p[1], cTA(15, "This is a textarea."), 0, 0);
        f.setSize(485, 338);
        f.setTitle("SSCCE");
        f.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        f.setLocationRelativeTo(null);
        f.add(p[0], BorderLayout.CENTER);
        f.add(p[1], BorderLayout.SOUTH);
        f.setVisible(true);
    }
    
    private JTextArea cTA(final int cols, final String text) //cTA stands for 
                                                             //"createTextArea"
    {
        final JTextArea t = new JTextArea(text, 1, cols);
        return t;
    }
    
    public static void main(final String[] args)
    {
        new SSCCE();
    }
    
    private void addItem(final String cell, final int colSpan,
        final int rowSpan, final JPanel pan, final JComponent c,
        final int weightx, final int weighty)
    {
        final GridBagConstraints gc =
            new GridBagConstraints(cell.charAt(0) - 65, cell.charAt(1) - 49,
                colSpan, rowSpan, weightx, weighty, GridBagConstraints.EAST,
                GridBagConstraints.VERTICAL, new Insets(0, 0, 0, 0), 0, 0);
        try
        {
            pan.add(c, gc);
            pan.validate();
        }
        catch (final Exception e)
        {
            e.printStackTrace();
            System.exit(0);
        }
        
    }
}

Edited by: Darryl Burke -- broke some extra long code lines

Edited by: ElectrifiedBrain - changed indenting from tabs to 4 spaces, set wrapping length to 80, got rid of unnecessary code.