In Java:

Problem 2[50 pts]: The input to this problem will be 3 filenames. The program must read from each of them. All of the input files will have the same format: A sequence of lines each containing an integer which may be positive or negative. Some of the integers may repeat. The files can be pretty long. You must consider all the integers belonging to the first of the files as those belonging to a set A (recall sets do not repeat elements), those from the second belong to B, and those from the third belonging to C. The output should be the answer to the following, each an integer on a different line. JAUBUCI