Find the average, sum, min and max of the N numbers Using user Input in Java.

import java.util.*;
class Average {
 public static void main(String args[]) {
  Scanner sc = new Scanner(System.in);   // to take user input
  int choice;
  int a = 0, min = 0, max = 0, x;
  int n = args.length;
  System.out.println("1-sum");
  System.out.println("2-Average");
  System.out.println("3-Minimum");
  System.out.println("4-Maximum");
  System.out.println("Enter Ur Choice : ");
  choice = sc.nextInt();
  for (int i = 0; i < n; i++) {
   a += Integer.parseInt(args[i]);  //to convert string into Integer
  }
  switch (choice) {
   case 1:
    System.out.println("The sum is : " + a);
    break;
   case 2:
    System.out.println("The Average is : " + a / n);
    break;
   case 3:
    for (int i = 0; i < n - 1; i++) {
     x = Integer.parseInt(args[i]);
     if (x < Integer.parseInt(args[i + 1]))
      min = x;
     else min = Integer.parseInt(args[i + 1]);
    }
    System.out.println("The minimum is : " + min);
    break;
   case 4:
    for (int i = 0; i < n - 1; i++) {
     x = Integer.parseInt(args[i]);
     if (x > Integer.parseInt(args[i + 1]))
      max = x;
     else
      max = Integer.parseInt(args[i + 1]);
    }
    System.out.println("The maximum is : " + max);
    break;
  }
 }
}