On Sun, 14 Feb 1999, alexander lang wrote:
> Hi all.
>
> Does anyone know if one is allowed to initialize static final variables
> within the "try" clause of a static initializer block?
>
> (eg.
> static final int x;
> static{
> try
> {
> x = 5;
> }
> catch(exception e)
> {...and so on ..}
> )
>
> I am working on a software project which has code like this. I am
> getting compile - time error messages which state that I am NOT allowed
> to fo this. Are there some tricks one can use to "trick" the compiler.
> I am assuming that the code previously worked(?). I am using
> jdk1.1.5-glibc.
>
> Any assistance would be high ly appreciated.
>
> Thank YOU!
>
> ______________________________________________________
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>
Hello,
I do not think that would be allowed. I just tried to compile this class
with the JDK 1.2 compiler and the jikes compiler and they do not accept it.
public class TryInStaticInit {
static final boolean cond;
static {
try
{
cond = true;
}
catch(Exception e) {
// do nothing
}
}
}
with javac from JDK 1.2
TryInStaticInit.java:3: Blank final variable 'cond' may not have been initialized. It
must be assigned a value in an initializer, or in every constructor.
static final boolean cond;
^
with jikes
Found 1 semantic error and issued 2 warnings compiling "TryInStaticInit.java":
3. static final boolean cond;
<-->
*** Error[116]: A blank class final variable must be initialized in a static
initializer block. It is assumed to be initialized
10. catch(Exception e) {
<--------->
*** Caution[ 186]: This catch block may be unreachable because there is no exception
whose type is assignable to "java/lang/Exception" that can be thrown during execution
of the body of the try block
I hope that helps
Mo DeJong
dejong at cs.umn.edu
