import java.util.Scanner;

/**
 * This program demonstrates command line argument input.
*/
public class InputTest2
{
   public static void main(String[] args)
   {
      if (args.length<2) {
	System.out.println("Correct Usage is InputTest2 name age");
	System.exit(0);
      } 

      // get first input
      String name = args[0];

      // get second input
      int age = Integer.parseInt(args[1]);

      // display output on console
      System.out.println("Hello, " + name + ". Next year, you'll be " + (age + 1));
   }
}

Results

No arguments

C:\ece538\class3\InputTest>java InputTest2
Correct Usage is InputTest2 name age

Correct arguments

C:\ece538\class3\InputTest>java InputTest2 John 35
Hello, John. Next year, you'll be 36

Can not have spaces in argument:

C:\ece538\class3\InputTest>java InputTest2 John Loomis 42
Exception in thread "main" java.lang.NumberFormatException: For input string: "L
oomis"
        at java.lang.NumberFormatException.forInputString(NumberFormatException.
java:65)
        at java.lang.Integer.parseInt(Integer.java:492)
        at java.lang.Integer.parseInt(Integer.java:527)
        at InputTest2.main(InputTest2.java:19)

unless you enclose it in quotes:

C:\ece538\class3\InputTest>java InputTest2 "John Loomis" 42
Hello, John Loomis. Next year, you'll be 43