Java Practical Exam

I recently faced Java Practical Exam. The problem given this time was:

Make a Java applet program to meet following requirements:

(I have made a untidy sketch. Refer to it.)

• Keep two multiple choice lists.
• keep four buttons ">",">>","<","<<" between lists.
• When ">" button is pressed, the All selected items from Multiple choice list 1 should be moved from Multiple choice list 2.
• When ">>" button is pressed, All items from Multiple choice list 1 should be moved to list 2.
• When "<" button is pressed, the All selected items from Multiple choice list 2 should be moved from Multiple choice list 1.
• When "<<" button is pressed, All items from Multiple choice list 2 should be moved to list 1.
• There should be a text box to enter items.
• Keep add button besides text box so that when button is pressed text entered in text box should be entered as element in list 1.
• If entry in textbox is same as another entry in List 1, it should not be added to list.(duplicates not allowed).
• Everytime user presses Add button, Text box should be cleared to blank.
• The items in both lists should be sorted at all the time. Two radio buttons "Ascending" and "descending" should decide the elements to be sorted in Ascending or descending order.
• Even while inserting element in list, it should be inserted at proper position so that list remains sorted after insertion.

Well I had the whole program done and HERE is the link.