how is this possible??--Help Wanted

[prash fresh]

when i ran the following program, I got the output as 100.My question is: how did the int value of "i" get typecasted to byte??
class Nq
{
public static void main(String args[])
{
final int i=100;
byte b=i;
System.out.println(b);
}
}

[Albert Gray]

Interesting though, but java Bible says that final variable may be assigned to a wider variable. If you delete the final and compile, you will get an error.
Albert

Originally posted by prash fresh:
when i ran the following program, I got the output as 100.My question is: how did the int value of "i" get typecasted to byte??
class Nq
{
public static void main(String args[])
{
final int i=100;
byte b=i;
System.out.println(b);
}
}

[Tamanna Mittal]

Hi,
There is a simple explanation to it. That 100 can easily fir inro byte's 7 bits. so it soes not give any error even i u r not type casting the value to byte. where as if u put the value of ini variable as 256 or something more. The program will not compile and will give u an error
possible loss of precision
found : int
required: byte
byte b=i;
^
1 error
I hope i made my point clear.
------------------
Cheers
Tamanna :-)

[prash fresh]

Albert,
Your reply seems ok but when we replace int declaration of "i" to long, the program does not work even though it is still final. Why is it so?
-Prash

[Jane Griscti]

Hi,
See JLS §5.2 Assignment Conversion. It explains what your seeing.
Hope that helps.
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Jane Griscti
Sun Certified Programmer for the Java� 2 Platform