Bugs item #1201699, was opened at 2005-05-13 17:36
Message generated for change (Tracker Item Submitted) made by Item Submitter
You can respond by visiting:
https://sourceforge.net/tracker/?func=detail&atid=438935&aid=1201699&group_id=44253
Category: Interactions
Group: Annoying
Status: Open
Resolution: None
Priority: 5
Submitted By: rlh (rhalterman)
Assigned to: Nobody/Anonymous (nobody)
Summary: final instance constants not constant
Initial Comment:
DrJava 20050519-0024
Windows, Linux, and Mac OS X versions
Create this class and compile it:
public class FinalTest {
public final double PI = 3.14159;
}
The following Interactions sequence behaves consistently on all
the platforms:
> FinalTest f = new FinalTest();
> f.PI = 2.5;
> f.PI
2.5
But, DrJava's compiler correctly disallows the following code:
public class TestFinalTest {
public static void main(String[] args) {
FinalTest f = new FinalTest();
f.PI = 2.5;
}
}
1 error found:
File: TestFinalTest.java [line: 4]
Error: cannot assign a value to final variable PI
Note: If the constant is static (which is ordinarily how constants
are handled), the interactions pane WILL throw an exception about
the field being final:
public class FinalTest {
public static final double PI = 3.14159;
}
> FinalTest f = new FinalTest();
> f.PI = 2.5;
IllegalAccessException: Field is final
at sun.reflect. ... (exception report continues)
DrJava 20050519-0024
Linux (Debian Woody) and Windows (XP Professional, SP2):
java version "1.5.0_03"
Java(TM) 2 Runtime Environment, Standard Edition (build
1.5.0_03-b07)
Java HotSpot(TM) Client VM (build 1.5.0_03-b07, mixed mode,
sharing)
Mac OS X (Tiger--10.4):
java version "1.5.0_02"
Java(TM) 2 Runtime Environment, Standard Edition (build
1.5.0_02-56)
Java HotSpot(TM) Client VM (build 1.5.0_02-36, mixed mode,
sharing)
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https://sourceforge.net/tracker/?func=detail&atid=438935&aid=1201699&group_id=44253
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