4.a:write a program to demonstrate the method of list interface in java ?

 import java.util.ArrayList;

import java.util.List;

public class ListDemo {

    public static void main(String[] args) {

        // Create a List of Strings

        List<String> fruits = new ArrayList<>();

        // Add elements to the list

        fruits.add("Apple");

        fruits.add("Banana");

        fruits.add("Orange");

        fruits.add("Mango");

        // Print the list

        System.out.println("Fruits List: " + fruits);

        // Accessing elements

        System.out.println("First fruit: " + fruits.get(0));

        System.out.println("Second fruit: " + fruits.get(1));

        // Modifying elements

        fruits.set(2, "Grapes");

        System.out.println("Modified Fruits List: " + fruits);

        // Removing elements

        fruits.remove("Apple");

        System.out.println("Updated Fruits List: " + fruits);

        // Checking if an element exists

        boolean containsMango = fruits.contains("Mango");

        System.out.println("Contains Mango? " + containsMango);

        // Getting the size of the list

        int size = fruits.size();

        System.out.println("Size of Fruits List: " + size);

        // Iterating over the list using a for-each loop

        System.out.println("Iterating over Fruits List:");

        for (String fruit : fruits) {

            System.out.println(fruit);

        }

        // Clearing the list

        fruits.clear();

        System.out.println("Cleared Fruits List: " + fruits);

    }

}