import java.util.*;

class ArrayExample{

    public static void main(String[] args) {
        int largest = 0;
        Scanner input = new Scanner(System.in);
        System.out.print("How many numbers you want to display: ");
        int n=input.nextInt();
        System.out.println("Enter array values: ");
        int arr[] = new int[n];
        int sum=0;
        for(int i = 0; i < arr.length; i++) {
            arr[i] = input.nextInt();
            if (largest < arr[i]) {
                largest = arr[i];
            }
            sum+=arr[i];
        }
        System.out.println("Largest number is: " + largest);
        System.out.println("Sum of array values: " + sum);
    }
}

Thanks a lot for the code.... :) it helps me a lot.... :) ^_^