ues java : $1.$ Write a program to create a Singly Linked List of employees where each studentnode contains thefollowing attributes:

Student$\_$Id

Student$\_$Name

Student$\_$GPA

Create following methods for implementation of the list created:

$$ AddFirst$()$ to insert a student at the start of the list.

$$ DeleteFirst$()$ to delete a student from the start of the list.

$$ AddLast$()$ to insert a student at the start of the list.

$$ DeleteLast$()$ to delete a student from the start of the list.

$$ Display$()$ to display the details of all the Students in the list.

$2.$ Define doubly linked list? Write a program to create a doubly linked list containing $5$ node with the values$(20,43,68,79,81).$

$$ Insert node in front of doubly linked list and display the list.

$$ Delete the last element of doubly linked list.

$$ Again insert a new node in front of doubly linked list and display the list.