NullPointerException when selecting a JMenuItem

I'm getting an error that I just can't figure out. Here's the error:
Exception occurred during event dispatching:
java.lang.NullPointerException
at ANClient.actionPerformed(Unknown Source)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1450)
at... (Snipped to save space ;-) )
And here's the code:
public class MyClass extends JFrame implements ActionListener {
JMenuItem printItem = new JMenuItem("Print");
// SNIP
public MyClass() {
printItem.addActionListener(this);
// SNIP
public void actionPerformed(ActionEvent e) {
// SNIP
} else if (eventSource == printItem) {
/./ Do Some Stuff
Now here's the part that gets me, I've done the same thing to all of the other JMenuItems I have, and in the same places, and they work just fine.
Any ideas?
Thanks in Advance...

Not exactally sure what you mean, but I have tried every JMenuItem and JButton in my app. This is the only one that throws this error, and it throws it everytime.

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VI2.vi ‏5 KB

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