Action when user press "Cancel"

try{

String string_months = JOptionPane.showInputDialog("Enter number of months:");

// return if user press cancel.

months = Integer.valueOf(string_months).intValue();

}catch (NumberFormatException f){

JOptionPane.showMessageDialog(null,"Only numbers allowed!");

this.getInput();

}

This code will never terminate. Is there someway to catch if the user press cancel?

[673 byte] By [fedevapsa] at [2007-11-27 4:20:41]