Win a copy of Head First Go this week in the Go forum!
    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 ...
  • Campbell Ritchie
  • Liutauras Vilda
  • Bear Bibeault
  • Paul Clapham
  • Jeanne Boyarsky
  • Devaka Cooray
  • Junilu Lacar
  • Tim Cooke
Saloon Keepers:
  • Tim Moores
  • Ron McLeod
  • Tim Holloway
  • Claude Moore
  • Stephan van Hulst
  • Winston Gutkowski
  • Carey Brown
  • Frits Walraven

Initializing my long array with prime numbers  RSS feed

Posts: 25
  • Mark post as helpful
  • send pies
  • Report post to moderator

    Hi, I'm having a hard time figuring out how to initialize my array with prime numbers using the method I created. I keep getting this error: "incompatible types: possible lossy conversion from long to int" for the line
primes[number] = number;
How do I fix this? Here is what I wrote:

Posts: 6595
BSD Linux Mac OS X VI Editor
  • Mark post as helpful
  • send pies
  • Report post to moderator
Welcome to the Ranch.

You probably know that array indices start counting from zero. Looking to your code, you start filling an array from position 2 (at best), which is the 3rd element in an array - probably it isn't what you want.

You correctly identified that you need a method which defines if number is a prime one. Is that method correct? Have you tested, verified that?

Going back to the loop within the main method, in order to fill in an array fully, you need to iterate over each its element position, that means starting from index 0 each time increasing it by 1, until condition 'index < primes.length' fails.
Posts: 23816
C++ Chrome Eclipse IDE Firefox Browser Java jQuery Linux VI Editor Windows
  • Likes 1
  • Mark post as helpful
  • send pies
  • Report post to moderator
Yeah. Let's stay with the original topic.

If I'd had more time, I would have written a shorter letter. -T.S. Eliot such a short, tiny ad:
Become a Java guru with IntelliJ IDEA
    Bookmark Topic Watch Topic
  • New Topic
Boost this thread!