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Java Java Objects (Retired) Delivering the MVP Arrays and Command Line Arguments

Posted by Tony Brackins
Tony Brackins
28,766 Points

passing in args[0]

I don't understand how we can pass into our objects "args[0]" and "args[1]".

Where is that coming from? The main method? Even if we did pass it in, is there actually any data in "args[0]" and "args[1]" ??

1 Answer

Robert Richey
Robert Richey
Courses Plus Student 16,352 Points

Hi Tony,

args take on the value of the arguments passed in, via command line, when the program is executed.

For example, java MyProgram foo bar baz has three command line arguments being passed into the program and will be available from the args variable at run time.

public static void main(String[] args) {
  // args[0] == 'foo';
  // args[1] == 'bar';
  // args[2] == 'baz';
}

Hope this helps,

Cheers

Tony Brackins
Tony Brackins
28,766 Points

That helps thanks!