Java Programming Question?

Using a jFrame:

1. Tell the user to put the winning scores in the past week's sporting events (of the same sport) along with the name of the sport, in a file and save it to the desktop. Put each score on its own line. Put the sport name on a line under the last score.

Ex:

4
3
12
Baseball

2. Prompt the user for a file name from the file located on the desktop.

3. Find the mean, median, and mode of the scores (use arrays).

4. Display the results to the user on the jFrame.

input: file name
output: mean, median, and mode of scores

Any help would be appreciated....I really suck at Java so a step-by-step explanation or something would be great :-)