Simple question with a button action

Im having some slight problems setting up my script so that when you click on the button a method is performed called encrypt().
I have...
public class Easy_Encrypt {
public static void main(String[] args) {
..Class stuff
JButton convert = new JButton("convert text");
encrypt() { ..stuff inside }
How do I make it so when you press convert it does the function encrypt() Ive searched through java's documentaries but every script does'nt work.....

try this:
convert.addActoinListener(new
ActionListener()
public void actionPerformed(ActionEvent event)
encrypt()

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