ava. Refer to screenshot. There is starter code for this question. public class LinkedList { Node head; Node tail; protected class Node{ String data; Node next; } public String removeFirst(){ //Complete the implementation of removeFirst } public String toString(){ String result = ""; Node n = head; while(n != null){ result += n.data + " -> "; n = n.next; } return result; } }

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Java. Refer to screenshot. There is starter code for this question. 

public class LinkedList {
Node head;
Node tail;

protected class Node{
String data;
Node next;
}


public String removeFirst(){
//Complete the implementation of removeFirst
}

public String toString(){

String result = "";

Node n = head;
while(n != null){
result += n.data + " -> ";
n = n.next;
}

return result;
}


}

Now, you will implement the remove first method.
The method will remove the first element from the list and return the data stored in the node. If the list is empty the method should return null
Mimir will use a subclass of linked list with a working version of add last.
Example
Output
Alice ->
Alice -> Bob ->
Alice -> Bob -> Eve ->
Removed: Alice
Bob -> Eve -> Jake ->
Input
4 false Alice false Bob false Eve true Jake
Removed: null
Mike ->
1 true Mike
Transcribed Image Text:Now, you will implement the remove first method. The method will remove the first element from the list and return the data stored in the node. If the list is empty the method should return null Mimir will use a subclass of linked list with a working version of add last. Example Output Alice -> Alice -> Bob -> Alice -> Bob -> Eve -> Removed: Alice Bob -> Eve -> Jake -> Input 4 false Alice false Bob false Eve true Jake Removed: null Mike -> 1 true Mike
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