How do I write a complete linked list java program without using java linked listed classes?

Develop a program that maintains a database of 5 students, including their first name, last name, date of birth, and social security number. Currently the database contains data for 4 students in an input file named students.txt. Your program will utilize arrays and linked lists to store information about each student. To maintain a high level of data security, the information will be separated between 2 different servers. Server1 is a linked list that holds the last name and the social security number. Server2 is an array of objects that holds the first name and the date of birth. Your program should prompt the user to add information for one additional student. After that information has been stored, your program should output the contents of the array and the linked list. 3