Question: Implement a singly-linked list in Java , add four methods of it: (1) boolean add (int e): appends the specified node to the end of

Implement a singly-linked list in Java, add four methods of it: (1) boolean add (int e): appends the specified node to the end of this list if e is not present in the list; returns true if a node is added to this list, false otherwise.

(2) boolean remove (int e): removes the first occurrence of the specified element from this list, if it is present; returns true if a node is removed from this list, false otherwise.

(3) int size(): returns the number of elements in this list.

(4) boolean equals(Object obj): returns true if the input object represents the same linked list, false otherwise.

Write test cases to test your implementation of the singly-linked list and its methods

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