What's nature of final constants

shyam_oec · #1 02-Mar-2008, 13:20

It's well known that ihis code will generate error

JAVA Code:


short a=5;
short b=6;
short c=a+b;
OR
short c=a+5;

because a+b OR a+5 is implecitely converted to int type,and this value is being assigned to short type.
Look at the code below

JAVA Code:


final short a=5;
short b=6;
short c=a+5;

this code works fine.can anyone explain what's going within jre when a+5 is encountered here.Is a+5 not imlecitely converted to int,if not why?and how the code worked?

JustinFox · #2 25-Apr-2008, 13:23

Quote:

Originally Posted by shyam_oec

It's well known that ihis code will generate error

JAVA Code:


short a=5;
short b=6;
short c=a+b;
OR
short c=a+5;

because a+b OR a+5 is implecitely converted to int type,and this value is being assigned to short type.
Look at the code below

JAVA Code:


final short a=5;
short b=6;
short c=a+5;

this code works fine.can anyone explain what's going within jre when a+5 is encountered here.Is a+5 not imlecitely converted to int,if not why?and how the code worked?

When you use the final keyword, it prevents the variable from being changed, in either type or value throughout the rest of the program.

Justin Fox

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What's nature of final constants

Re: What's nature of final constants