I need to write a java program that will read data from a file. The data is:

John Doe 75
Joe Blow 65
Mary Smith 80
John Green 82
Jill White 97

The program is suppose to read into three separate arrays: firstname array, lastname array, and a score array. The output should be the initials followed by the score in a bubble sort from top score to lowest score.
(It will look like this:
JW 97
JG 82
MS 80
JD 75
JB 65 )

I DON'T KNOW WHERE TO START! Please help me ):