Win a copy of Terraform in Action this week in the Cloud forum!
  • 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 Pie Elite all forums
this forum made possible by our volunteer staff, including ...
Marshals:
  • Tim Cooke
  • Campbell Ritchie
  • Paul Clapham
  • Ron McLeod
  • Liutauras Vilda
Sheriffs:
  • Jeanne Boyarsky
  • Rob Spoor
  • Bear Bibeault
Saloon Keepers:
  • Jesse Silverman
  • Tim Moores
  • Stephan van Hulst
  • Tim Holloway
  • Carey Brown
Bartenders:
  • Piet Souris
  • Al Hobbs
  • salvin francis

can we store an integer in a byte array

 
Greenhorn
Posts: 4
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
I want to transform an integer to a byte array of size 4.
Can we do that?
 
Ranch Hand
Posts: 3851
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
int i[]={1,3,5,7};
byte b[]= new byte[i.length];

for(int j=0; j<i.length; j++) {
b[j] = (byte)i[j];
System.out.println(b[j]);//optional
}

Try , it may help you ...
 
Ranch Hand
Posts: 1970
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator

Originally posted by zheng da:
I want to transform an integer to a byte array of size 4.
Can we do that?



Yes. This should do it, I think. Run the loop the other way to swap between big-endian and little-endian.
 
author and iconoclast
Posts: 24203
44
Mac OS X Eclipse IDE Chrome
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
If you need to do a lot of these, it may make sense to use a ByteArrayOutputStream fed by a DataOutputStream.

reply
    Bookmark Topic Watch Topic
  • New Topic