how to create a singly linked list without using in-built functions?

Write a program in Java that reads a text file, "in.txt", that contains a list of integers separated by spaces. After reading the integers, the program stores them into a singly linked list and prints out the smallest integer in the list using the following recursive algorithm:
1. Divide the list into two halves(if the list contains odd number of elements the halves will be of approximately the same length).
2. Find the smallest integer in each of the two halves recursively.
3. The smallest integer in the entire list will be the smaller of these two integers.