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Write a Program to perform the basic operations like insert, delete, display and search in a list. List contains String object items where these operations are to be performed.

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 Operations on String List

Write a Program to perform the basic operations like insert, delete, display and search in a list. List contains String object items where these operations are to be performed.

Sample Input and Output: 

1. Insert 
2. Search 
3. Delete 
4. Display 
5. Exit 
Enter your choice: 1 
Enter the item to be inserted: 
Bottle 
Inserted successfully 
1. Insert 
2. Search 
3. Delete 
4. Display 
5. Exit 
Enter your choice: 1 
Enter the item to be inserted: Water 
Inserted successfully 
1. Insert 
2. Search 
3. Delete 
4. Display 
5. Exit 
Enter your choice: 1 
Enter the item to be inserted: Cap 
Inserted successfully 
1. Insert 
2. Search 
3. Delete 
4. Display 
5. Exit 
Enter your choice: 1 
Enter the item to be inserted: Monitor 
Inserted successfully 
1. Insert 
2. Search 
3. Delete 
4. Display 
5. Exit 
Enter your choice: 2 
Enter the item to search : Mouse 
Item not found in the list. 
1. Insert 
2. Search 
3. Delete 
4. Display 
5. Exit 
Enter your choice: 2 
Enter the item to search: Monitor 
Item found in the list. 
1. Insert 
2. Search 
3. Delete 
4. Display 
5. Exit 
Enter your choice : 3 
Enter the item to delete: Mouse 
Item does not exist. 
1. Insert 
2. Search 
3. Delete 
4. Display 
5. Exit 
Enter your choice: 4 
The Items in the list are : Bottle Water Cap Monitor 
1. Insert 
2. Search 
3. Delete 
4. Display 
5. Exit 
Enter your choice : 3 
Enter the item to delete: Cap 
Deleted successfully 
1. Insert 
2. Search 
3. Delete 
4. Display 
5. Exit 
Enter your choice: 4 
The Items in the list are : Bottle Water Monitor 
1. Insert 
2. Search 
3. Delete 
4. Display 
5. Exit 
Enter your choice: 5

Program: 

package com.paagalblogger; //remove this line when copy

import java.util.ArrayList;
import java.util.Collection;
import java.util.Objects;
import java.util.Scanner;

public class Exp2_3 {
    public static void main(String[] args) {

        /*
         * paagalblogger.blogspot.com
         */
        Scanner sc = new Scanner(System.in);
        Collection<String> list = new ArrayList<>();

        while(true){
            System.out.println("1. Insert");
            System.out.println("2. Search");
            System.out.println("3. Delete");
            System.out.println("4. Display");
            System.out.println("5. Exit");

            System.out.print("Enter your choice: ");
            int choice = sc.nextInt();

            switch (choice) {
                case 1 -> {
                    System.out.println("Enter the String to be added");
                    String s = sc.next();
                    list.add(s);
                    System.out.println("String added successfully");
                }
                case 2 -> {
                    System.out.println("Enter the String to be searched: ");
                    String s = sc.next();
                    if(list.contains(s))
                        System.out.println("Item present in the list");
                    else
                        System.out.println("Item not present");
                }
                case 3 -> {

                    if (list.isEmpty()) {
                        System.out.println("Err: List is Empty. Underflow Condition.");
                        break;
                    }
                    System.out.println("Enter the String to be deleted");
                    String s = sc.next();
                    if(list.contains(s)){
                        list.remove(s);
                        System.out.println("Item present in the list");
                    }
                    else
                        System.out.println("Item not present");
                }
                case 4 ->
                    System.out.println(list);

                default -> System.exit(0);
            }
        }
    }
}


Output:



I hope, it helps!!

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