Rewrite the following C++ classes in Java and compare the result with the C++ version in terms of readability and writability. Hint: Both stack_2 and queue_2 are private subclasses. 

class single linked list f private: class node f public nod link int contents; node ead. public single linked list. thead 0 void insert at head (int) void insert at tail (int) int remove at head int empty class stack 2 private single linked list public stack 2 void push (int value) single linked list insert at head (value) int pop return single linked list remove at head single linked list empty class queue 2 private single linked list f public queue 2 void enqueue (int value) single linked list insert at tail (value) int de queue single linked list. remove at head single linked list empty