Java Command Line argument

Write a program that reads an unspecified number of integer arguments from the command line and adds them together to print the result.

For example, suppose that you enter the following:
java Adder 1 3 2 10

The program should display 16 and then exit. The program should display an error message if the user enters only one argument.

Solution:

 public class CommandLineReader {

public static void main(String args[]){

  <//Checking the number of received arguments.
  
if(args.length<2){
  System.out.println("Please input more then one argument.");
  return;
  }

 //Adding the arguments.
  
int sum=0;
 for(int i=0;i<args.length;i++){
   sum+=Integer.parseInt(args[i]);
 }
  
  //Printing the result.
  System.out.println("Sum: "+sum);
 }
}