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Displaying a Return Value  RSS feed

 
Kelli Cain
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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!

 
Bear Bibeault
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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.
 
Campbell Ritchie
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And welcome to the Ranch
 
Ron McLeod
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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
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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...
 
It is sorta covered in the JavaRanch Style Guide.
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