encrypt a JTextField

Hi all,
my Question is so simple....
i have a JTextField and i need to encrypt every thing will be written inside (since i use it as the password field)
any SIMPLE idea
Thanks

It doesn't matters from where it comes, you just have to encrypt the string.
And if you don't know how too, google it.

It's your lucky day: A google result

A SIMPLE idea: don't use a JTextField, use a JPasswordField. That's what they're for.

Perfect and soooo simple Solution ... Can i RATE your answer ??!!
Thanks