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ClassCastException: oracle.ojc.compiler.AutoBoxingExpression JDeveloper 10.3

Posted on 2014-02-03
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Last Modified: 2014-02-12
I'm getting an odd exception using JDeveloper 10.3 compiling with JDK 1.5.

ClassCastException: oracle.ojc.compiler.AutoBoxingExpression

Anybody run across this before?
I'm mostly an Eclipse guy, so is there something with JDev or the internal OC4J server I'm missing? I haven't started the server.
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Question by:MehtaJasmin
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Expert Comment

by:krakatoa
ID: 39829463
Probably to do with Generics. These days you need to tell the compiler what sort of objects are involved.

Previously : Vector v = new Vector();

with generics:

Vector<String> v = new Vector<String>();

etc.
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LVL 86

Expert Comment

by:CEHJ
ID: 39829501
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Author Comment

by:MehtaJasmin
ID: 39829522
Sure, that makes sense, but the class that's throwing the exception is in the oracle libraries. Maybe my .jars are out of date.

I'll credit for correct response if that's what it turns out to be. Thanks.
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Author Comment

by:MehtaJasmin
ID: 39829536
Here's the full error message:

java.lang.ClassCastException: oracle.ojc.compiler.AutoBoxingExpression
      at oracle.ojc.compiler.ClassFileWriter.createClassFile(ClassFileWriter.java:1224)
      at oracle.ojc.compiler.RawClassSymbol.generateClass(Symbol.java:7217)
      at oracle.ojc.compiler.Parser.resolveMethodBodies(Parser.java:8397)
      at oracle.ojc.compiler.Parser.parse(Parser.java:7823)
      at oracle.ojc.compiler.Compiler.main_internal(Compiler.java:978)
      at oracle.ojc.compiler.Compiler.main(Compiler.java:745)
      at oracle.jdeveloper.compiler.Ojc.translate(Ojc.java:1486)
      at oracle.jdeveloper.compiler.UnifiedBuildSystem$CompileThread.buildGraph(UnifiedBuildSystem.java:300)
      at oracle.jdeveloper.compiler.UnifiedBuildSystem$CompileThread.buildProjectFiles(UnifiedBuildSystem.java:515)
      at oracle.jdeveloper.compiler.UnifiedBuildSystem$CompileThread.buildProject(UnifiedBuildSystem.java:608)
      at oracle.jdeveloper.compiler.UnifiedBuildSystem$CompileThread.buildAll(UnifiedBuildSystem.java:665)
      at oracle.jdeveloper.compiler.UnifiedBuildSystem$CompileThread.run(UnifiedBuildSystem.java:893)
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LVL 86

Expert Comment

by:CEHJ
ID: 39829664
Sure, that makes sense, but the class that's throwing the exception is in the oracle libraries.
Yes, but it's important to see it anyway. Unfortunately the authors of the code have not seen fit to show the problematic source (of course i'm assuming the error IS caused by a problem in compiling the source) so it makes it difficult to correct.

What i would do in this case is start updating stuff. You should in any case be using a 1.7 compiler (even if you compile to target 1.5). Also update the JDeveloper version if possible.

If that doesn't cure it, let us know
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Author Comment

by:MehtaJasmin
ID: 39839658
I've requested that this question be deleted for the following reason:

Problem was solved along with my other question by the credited solution on that thread.
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LVL 86

Expert Comment

by:CEHJ
ID: 39839659
Before you close this, please state the solution here that explains how to get JDeveloper working correctly. It should not be necessary to use a different compiler
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Accepted Solution

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MehtaJasmin earned 0 total points
ID: 39839830
When I selected "use javac" in the JDeveloper compiler properties, both errors (this and the class format error in my other thread) resolved. The reason for two threads was that the class format error was discovered before db connection was established, so I hadn't tried to run at that point.
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Author Closing Comment

by:MehtaJasmin
ID: 39852787
The answer from another thread also corrected this. It was credited and graded A there.
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