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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.

 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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