hi i'm a first year student of bachelor networking but i don't have basic in java..i need to use 2D array to key in input subject code,credit,marks,grade,points and CALCULATE total credit,total point,GPA and CGPA...i have no idea what to do..if using method i can probably do it but 2D array screwed me...i've been in front of my lappy for 4 hours...help me please :(