• Post Reply Bookmark Topic Watch Topic
  • New Topic
programming forums Java Mobile Certification Databases Caching Books Engineering Micro Controllers OS Languages Paradigms IDEs Build Tools Frameworks Application Servers Open Source This Site Careers Other all forums
this forum made possible by our volunteer staff, including ...
Marshals:
  • Campbell Ritchie
  • Liutauras Vilda
  • Jeanne Boyarsky
  • Devaka Cooray
  • Paul Clapham
Sheriffs:
  • Tim Cooke
  • Knute Snortum
  • Bear Bibeault
Saloon Keepers:
  • Ron McLeod
  • Tim Moores
  • Stephan van Hulst
  • Piet Souris
  • Ganesh Patekar
Bartenders:
  • Frits Walraven
  • Carey Brown
  • Tim Holloway

Displaying a Return Value

 
Greenhorn
Posts: 4
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
I am working on a program to have a user input two positive integers and then finding the greatest common denominator between the two. My problem is, I don't know how to display the number (num2) that is returned after the method. Putting a simple System.out.println gives me the error "unreachable code". Any thoughts would be greatly appreciated. Thank you in advance!

 
Sheriff
Posts: 67266
170
Mac Mac OS X IntelliJ IDE jQuery Java
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Code after a return cannot be executed. That's what return means: stop the method and return the value. That's why code placed after it cannot be reached.

So, either move the display code to before the return, or in the calling method after the method call.
 
Marshal
Posts: 64642
225
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
And welcome to the Ranch
 
Saloon Keeper
Posts: 2613
329
Android Eclipse IDE Angular Framework MySQL Database TypeScript Redhat Java Linux
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
You have a method to determine the largest common denominator, but are never calling it. Also, you should be printing the result from the main method, not the method running the algorithm. For example:

 
Kelli Cain
Greenhorn
Posts: 4
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Thank you all, got it! Now once I figure out how to validate whether or not the entered values are integers and not doubles/other characters I'll be good to go! Off to search...
 
With a little knowledge, a cast iron skillet is non-stick and lasts a lifetime.
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
Boost this thread!