length () error !!!

Hi

when i clicked an exit button inside ActionListener the program will automatically quits...

Ok , i add a JTextArea in main function did so...

String textenter = textarea.getText();//textarea object of JTextArea

int len = textenter.length();

i calculates the length of textarea...

and when user clicks exit button..

class ExitListenerimplements ActionListener

{

publicvoid actionPerformed(ActionEvent evtexit)

{

if(len >=1)

{

System.out.println("Success " + len);

}

}

}

But i am getting errors its not calculating length at runtime....

Would anybody help me...

[1094 byte] By [Reona] at [2007-11-27 2:25:57]