@cen: wrong again! hehehe it isnt PrintForm, its PrintWriter anyway, i got hold of my problem. so, the step would be reading now the file. how do you delimit using three characters - "[", ",", and "]"?
ill be using FileReader to "read" out the data then probably use StringTokenizer to delimit those three characters.
next would be compare two arrays...
Binary Search Tree...
AVL Tree...
Hash Table...
Linked List..
and more...
im getting 3 hours of sleep every night