You will. The clue is in the word
ThanglishToTamilGUI tt = new ThanglishToTamilGUI();
String apper = tt.anz;
Since you create a new instance, it will not have the values that the user entered into a different instance!
Try just using the current value! Have a look at this: Transferring information between two forms, Part 1: Parent to Child
(It may be you need one of the other tips in the series - I can't see your code so I can't tell)