Experiment- 2.
Student Name: Sumit UID: 21BCS10075
Branch: BE-CSE Section/Group: KRG_SC_1
Semester: 6th Date of Performance: 07/03/2024
Subject Name: Project Based Learning in Java Subject Code: 21CSH-319
1. Aim: Write a Program to perform the basic operations like insert, delete, display and
search in list. List contains String object items where these operations are to be
performed.
2. Objective:
• To learn about concept of ArrayList.
• To learn about various methods of List.
3. Script and Output:
import java.util.ArrayList;
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
ArrayList<String> stringList = new ArrayList<>();
Scanner scanner = new Scanner(System.in);
while (true) {
System.out.println("\nSelect operation:");
System.out.println("1. Insert");
System.out.println("2. Delete");
System.out.println("3. Display");
System.out.println("4. Search");
System.out.println("5. Exit");
int choice = scanner.nextInt();
scanner.nextLine();
switch (choice) {
case 1:
System.out.print("Enter string to insert: ");
String insertString = scanner.nextLine();
insert(stringList, insertString);
break;
case 2:
System.out.print("Enter string to delete: ");
String deleteString = scanner.nextLine();
delete(stringList, deleteString);
break;
case 3:
display(stringList);
break;
case 4:
System.out.print("Enter string to search: ");
String searchString = scanner.nextLine();
search(stringList, searchString);
break;
case 5:
System.out.println("Exiting program.");
System.exit(0);
break;
default:
System.out.println("Invalid choice. Please try again.");
break;
}
}
}
private static void insert(ArrayList<String> list, String item) {
list.add(item);
System.out.println("String '" + item + "' inserted successfully.");
}
private static void delete(ArrayList<String> list, String item) {
if (list.contains(item)) {
list.remove(item);
System.out.println("String '" + item + "' deleted successfully.");
} else {
System.out.println("String '" + item + "' not found in the list.");
}
}
private static void display(ArrayList<String> list) {
if (list.isEmpty()) {
System.out.println("List is empty.");
} else {
System.out.println("String list:");
for (String item : list) {
System.out.println(item);
}
}
}
private static void search(ArrayList<String> list, String item) {
if (list.contains(item)) {
System.out.println("String '" + item + "' found in the list.");
} else {
System.out.println("String '" + item + "' not found in the list.");
}
}
}
Output:
