How to check for shortage of command line arguments

Hi, how do I check for a shortage of command line arguments entered, I tried this in main and it works, but is that proper coding technique?
Also, I want to know why it doesn's throw the ArrayIndexOutOfBoundsException to indicate too many command line arguments so how do I
define this, I am confused. Also, please see the commented out if-block, I want to make sure that when user enters
pos integers greater than the supported range for an int in Java, that it should give a user friendly error message but that
if-block doesn't run as I tried to compile it, how do I implement this then? (Note: I noticed that the NumberFormatException seems to catch values exceeding the range for pos integers, but I thought NumberFormatException is to check if in a given string there are non numeric characters...

Btw: the program for the sum method I written (not included) is supposed to sum the three command line arguments and return the int. (the sum method is for adding pos ints only I want)

Code :

---

public static void main(String[] args)
{
  if ( args.length < 3 )
    return;
 
/**HOW DO I CHECK FOR BOUNDARY VALUES THEN IF THE BELOW IF BLOCK DOESN'T WORK...****/
  /if ( Integer.parseInt(args[0]) > Integer.MAX_VALUE | 
   // Integer.parseInt(args[1]) > Integer.MAX_VALUE |	
   // Integer.parseInt(args[2]) > Integer.MAX_VALUE  ) 
   // {
	  // System.out.println("Int inputs too large, not supported");
          // return;
     //}
 
  try
  {
     sum(Integer.parseInt[0]);
     sum(Integer.parseInt[1]);
     sum(Integer.parseInt[2]); 
  }
  catch (java.lang.ArrayIndexOutOfBoundsException exception) 
  {
	System.out.println("T");
   }
  catch (NumberFormatException nfe)//to deal with non-int input
 {
        System.out.println("Inputs cannot be non-integers.");
 }
}

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Any help appreciated.

Quote:

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I tried this in main and it works, but is that proper coding technique?

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Yes, it is.

Quote:

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Also, I want to know why it doesn's throw the ArrayIndexOutOfBoundsException to indicate too many command line arguments so how do I
define this, I am confused.

---

Coz you return it if it has arguments less than 3. Try removing if(args.length<3) and pass two arguments to experience index out of bound exception.