How do you check if the input is empty?

Hello,
I am asked to write a program which gets as input in the command line a number of strings, and is to print out the first of these string.
but if the input is empty it must print our an error message.
how do i check if the input is empty?
i guessed
public static void main (String[] args){
if (args == null)
........but thats wrong.
Thanks,
iris

If no arguments were passed, it means that there are zero arguments entered. So the args array will have a length of zero.

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