While singly-linked lists have many uses, they also present some restrictions. For one thing, singly-linked lists restrict node traversal to a single direction: you can’t traverse a singly-linked list ...
In this example, Employee is a self-referential class because its next field has type Employee. This field is an example of a link field because it can store a reference to another object of its class ...
As to the use of java, for most data structures none of the OO aspects will be remotely relevant so really it boils down to writing C like code on a platform with array bounds checking and null ...