Using java, answer the following questions about the code below. 1) Create a new function or method that checks to see if an int parameter is present in the list. 2) Create a main() method or JUnit tests to show that your list code functions as intended.   (Code) private class Node int data; Node next; Node(int data) { this.data = data; this.next = null; } } private Node first; private Node last;  public void addToEnd(int data){  Node newNode = new Node(data); if (first == null){ first = newNode; last = newNode; } else { last.next = newNode; last = newNode; } } public void printList(){  Node current = first; while (current != null){ System.out.print(current.data + " "); current = current.next; } System.out.println(); } public static void main(String[] args){ node list = new node(); list.addToEnd(2); list.addToEnd(4); list.addToEnd(6); list.printList(); } }

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
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Using java, answer the following questions about the code below.

1) Create a new function or method that checks to see if an int parameter is present in the list.

2) Create a main() method or JUnit tests to show that your list code functions as intended.

 

(Code)

private class Node
int data;
Node next;

Node(int data) {
this.data = data;
this.next = null;
}
}
private Node first;
private Node last; 

public void addToEnd(int data){ 
Node newNode = new Node(data);
if (first == null){
first = newNode;
last = newNode;
} else {
last.next = newNode;
last = newNode;
}
}
public void printList(){ 
Node current = first;
while (current != null){
System.out.print(current.data + " ");
current = current.next;
}
System.out.println();
}
public static void main(String[] args){
node list = new node();
list.addToEnd(2);
list.addToEnd(4);
list.addToEnd(6);

list.printList();
}
}
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