Input parameter of Main method

Main method takes a string array as the input argument. Lets do some experiments with it.

Code:

---

public class MainClass {
  public static void main(String[] args) {
    System.out.println("No. of argumetns are: " + args.length);
      for(int i= 0;i < args.length;i++)
          System.out.println("Argument " + i + " is : " + args[i]);
    }
}

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String delimiter is a space character.

Looking at the code, which I will probably put in several places in my code, I get two questions:
1. Is args[] always non-null/
2. One would expect this code does not drop into the for loop if there are no command line parameters. If so, this would be a handy tool for checking if anything provided on command line.