Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

Java Java Basics Perfecting the Prototype Conditional ints

Timothy Van Cauwenberge
Timothy Van Cauwenberge
8,958 Points

One question about code

Hi, I know the code is correct but I have one question. This might be dumb to ask but how come you need the 0 in System.exit() for the code to work?

int numberOfPeople = 3;
if(numberOfPeople < 4)
  console.printf("Your table is ready");

1 Answer

Justin Horner
Justin Horner
Treehouse Guest Teacher

Hello Timothy,

The reason you need to provide the zero as an argument to the exit method is because it's a required parameter called status that indicates if the exit is normal or abnormal. Here's a link to the documentation but I've included a excerpt from it below.

The argument serves as a status code; by convention, a nonzero status code indicates abnormal termination.

I hope this helps.