Thread: Problem with CardLayout

Hey guys I'm trying to make a GUI which can navigate through JTextAreas when a Next or Previous button is pushed. I'm using CardLayout to switch between the JTextArea. I can get the program to compile but every time I push the next or previous button I always get a NullPointerException. I don't know why the CardLayout object is null in the next and previous methods and its making me really confused. Any help is appreciated thx guys!

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.io.*;

/**
*The AsciiCanvas class creates the text area for the ascii animation
*/

public class AsciiCanvas extends JTextArea
{
private JPanel jp1;
private JPanel jp2;
private JPanel jp3;
private JPanel jp4;
private JPanel jp5;
private JPanel jp6;
private JPanel jp7;
private JPanel jp8;
private JPanel jp9;
private JPanel jp10;
private JTextArea text1;
private JTextArea text2;
private JTextArea text3;
private JTextArea text4;
private JTextArea text5;
private JTextArea text6;
private JTextArea text7;
private JTextArea text8;
private JTextArea text9;
private JTextArea text10;

private JPanel cardPanel;
private CardLayout cl;
private int currentCard = 1;

private JFileChooser fc;


public AsciiCanvas()
{
Font mono = new Font("Monospaced", Font.PLAIN, 12);

cardPanel = new JPanel();
CardLayout cl = new CardLayout();
cardPanel.setLayout(cl);


JTextArea text1 = new JTextArea();
JTextArea text2 = new JTextArea();
JTextArea text3 = new JTextArea();
JTextArea text4 = new JTextArea();
JTextArea text5 = new JTextArea();
JTextArea text6 = new JTextArea();
JTextArea text7 = new JTextArea();
JTextArea text8 = new JTextArea();
JTextArea text9 = new JTextArea();
JTextArea text10 = new JTextArea();



JPanel jp1 = new JPanel();
JPanel jp2 = new JPanel();
JPanel jp3 = new JPanel();
JPanel jp4 = new JPanel();
JPanel jp5 = new JPanel();
JPanel jp6 = new JPanel();
JPanel jp7 = new JPanel();
JPanel jp8 = new JPanel();
JPanel jp9 = new JPanel();
JPanel jp10 = new JPanel();

jp1.add(text1);
jp2.add(text2);
jp3.add(text3);
jp4.add(text4);
jp5.add(text5);
jp6.add(text6);
jp7.add(text7);
jp8.add(text8);
jp9.add(text9);
jp10.add(text10);

cardPanel.add(jp1, "1");
cardPanel.add(jp2, "2");
cardPanel.add(jp3, "3");
cardPanel.add(jp4, "4");
cardPanel.add(jp5, "5");
cardPanel.add(jp6, "6");
cardPanel.add(jp7, "7");
cardPanel.add(jp8, "8");
cardPanel.add(jp9, "9");
cardPanel.add(jp10, "10");

setBorder(BorderFactory.createTitledBorder("Animat ion here"));
setFont(mono);

fc = new JFileChooser();
}


public void Next()
{
if(currentCard < 10)
{

currentCard +=1;
cl.show(cardPanel, "" + (currentCard));
}


}

public void Previous()
{
if(currentCard > 1)
{
currentCard -= 1;
cl.show(cardPanel, "" + (currentCard));


}
}




Error Message*******

Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
at AsciiCanvas.Next(AsciiCanvas.java:108)
at AsciiArt$btnOneListener.actionPerformed(AsciiArt.j ava:72)
at javax.swing.AbstractButton.fireActionPerformed(Abs tractButton.java:2018)
at javax.swing.AbstractButton$Handler.actionPerformed (AbstractButton.java:2341)
at javax.swing.DefaultButtonModel.fireActionPerformed (DefaultButtonModel.java:402)
at javax.swing.DefaultButtonModel.setPressed(DefaultB uttonModel.java:259)
at javax.swing.plaf.basic.BasicButtonListener.mouseRe leased(BasicButtonListener.java:252)
at java.awt.Component.processMouseEvent(Component.jav a:6504)
at javax.swing.JComponent.processMouseEvent(JComponen t.java:3321)
at java.awt.Component.processEvent(Component.java:626 9)
at java.awt.Container.processEvent(Container.java:222 9)
at java.awt.Component.dispatchEventImpl(Component.jav a:4860)
at java.awt.Container.dispatchEventImpl(Container.jav a:2287)
at java.awt.Component.dispatchEvent(Component.java:46 86)
at java.awt.LightweightDispatcher.retargetMouseEvent( Container.java:4832)
at java.awt.LightweightDispatcher.processMouseEvent(C ontainer.java:4492)
at java.awt.LightweightDispatcher.dispatchEvent(Conta iner.java:4422)
at java.awt.Container.dispatchEventImpl(Container.jav a:2273)
at java.awt.Window.dispatchEventImpl(Window.java:2713 )
at java.awt.Component.dispatchEvent(Component.java:46 86)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.j ava:707)
at java.awt.EventQueue.access$000(EventQueue.java:101 )
at java.awt.EventQueue$3.run(EventQueue.java:666)
at java.awt.EventQueue$3.run(EventQueue.java:664)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPri vilege(ProtectionDomain.java:76)
at java.security.ProtectionDomain$1.doIntersectionPri vilege(ProtectionDomain.java:87)
at java.awt.EventQueue$4.run(EventQueue.java:680)
at java.awt.EventQueue$4.run(EventQueue.java:678)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPri vilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java: 677)
at java.awt.EventDispatchThread.pumpOneEventForFilter s(EventDispatchThread.java:211)
at java.awt.EventDispatchThread.pumpEventsForFilter(E ventDispatchThread.java:128)
at java.awt.EventDispatchThread.pumpEventsForHierarch y(EventDispatchThread.java:117)
at java.awt.EventDispatchThread.pumpEvents(EventDispa tchThread.java:113)
at java.awt.EventDispatchThread.pumpEvents(EventDispa tchThread.java:105)
at java.awt.EventDispatchThread.run(EventDispatchThre ad.java:90)