File APIs for Java Developers
Manipulate DOC, XLS, PPT, PDF and many others from your application.
http://aspose.com/file-tools
The moose likes Programmer Certification (SCJP/OCPJP) and the fly likes Final variable Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login
JavaRanch » Java Forums » Certification » Programmer Certification (SCJP/OCPJP)
Bookmark "Final variable" Watch "Final variable" New topic
Author

Final variable

Lata Bagga
Ranch Hand

Joined: Jun 13, 2007
Posts: 35
Hello,



By running the above code, the compiler gives error in "line 1" saying that "cannot convert from int to byte". It's fine, but when I compile the other way as:


Now it is not giving any error. I can't understand why its not giving any error here. Please help me.

Regards,
Lata
Jesus Angeles
Ranch Hand

Joined: Feb 26, 2005
Posts: 2053


Here, the compiler doesnt know what value will be put in the int, a value which can be greater than 127, which cannot be automatically assigned to a byte.



In this one, the compiler knows that 'i' will have 127 always. The compiler allowed the assignment into b because he knows 127 fits into a byte.
Jesus Angeles
Ranch Hand

Joined: Feb 26, 2005
Posts: 2053
Try use 128 and both codes will give error.
 
 
subject: Final variable