Can anyone recommend a source for information on debug symbols?

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markscottwright - 19 Sep 2005 00:16 GMT

I'm curious how the jdk embeds debug symbols in .class files. Can
anyone recommed a good resource for that, either on the web or in book
form? Is there a standard API for determining things like "which ctor
is being called on line X, col Y of file Z.java?"

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Thomas Hawtin - 19 Sep 2005 00:26 GMT

> I'm curious how the jdk embeds debug symbols in .class files. Can
> anyone recommed a good resource for that, either on the web or in book

It's all in the JVM spec.

http://java.sun.com/docs/books/vmspec/2nd-edition/html/ClassFile.doc.html#79868

> form? Is there a standard API for determining things like "which ctor
> is being called on line X, col Y of file Z.java?"

Not as far as I know. Editors tend to do that sort of thing without full
compilation. I'm sure it'd be quite easy to do from class files with,
say, ObjectWeb ASM.

Tom Hawtin

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Roedy Green - 19 Sep 2005 00:40 GMT

>I'm curious how the jdk embeds debug symbols in .class files. Can
>anyone recommed a good resource for that, either on the web or in book
>form? Is there a standard API for determining things like "which ctor
>is being called on line X, col Y of file Z.java?"

check out JPDA. It in an interface for people want to write source
code debuggers.

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Canadian Mind Products, Roedy Green.
http://mindprod.com Again taking new Java programming contracts.

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Can anyone recommend a source for information on debug symbols?

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