Java Project Using Linked List

My furniture business requires that the following Java program be coded using a linked list. Write a program called SubsetTarget in Java that reads in a text file, [login to view URL], that contains a list of positive and negative integers (duplicates are possible) separated by spaces. Zero may be included. You should read the integers into a singly linked list in the same order in which they appear in the input file. In other words, you may not rearrange the integers as you read them in nor may you rearrange them after you have read them in. The singly linked list must remain immutable throughout the programs run after reading in the integers. Your program should print YES if there exists two subsets of integers such that the individual sum of the subsets are equal to a value in the other subset. All integers must be used and can only belong to a single subset but not both at the same time. If there are no such subsets then only print NO. I've attached a sample [login to view URL] file.