Question

team, create a Java program that adds or removes entries from a linked list based on user input. You can use the index of the entry as the key to identify the record for addition or deletion. The program can be as simple as you like but must add an entry to the list based on the user input and also must delete the proper item in the list based on the index entered by the user Display your list contents after each operation. Note: Please choose one of the following themes for your program Students/Classroom Sports Scores/Teams Passengers/Travel

Answer 1

import java.util.LinkedList;

import java.util.Scanner;

public class StudentsList {

public static void main(String[] args) {

LinkedList<String> student = new LinkedList<>();

while(true){

System.out.println("1.Add Student to the List\n2.Remove Student from the list\n3.Display the list\n4.Exit");

Scanner sc=new Scanner(System.in);

System.out.print("Enter Your Choice :");

int choice=sc.nextInt();

switch(choice){

case 1:

//to adding in the list

System.out.println();

System.out.print("Enter Student ID to add in the list :");

String id=sc.next();

student.add(id);

System.out.println();

break;

case 2:

//to removie from the list

System.out.println();

System.out.println("Enter Student ID to remove from the list:");

id=sc.next();

student.remove(id);

System.out.println();

break;

case 3:

//to display the list

if(student.size()==0) System.out.println("\nList is Empty\n");

else{

System.out.println("\nStudent ID List");

for(String i:student) System.out.println(i);

System.out.println();

}

break;

case 4:

//to exit from the loop

System.out.println();

System.out.println("Thank You");

System.exit(0);

break;

default:

//other than this

System.out.println("Enter correct choice");

break;

}

}

}

}