Java 1.5 Class Version

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soup_or_power@yahoo.com - 21 Feb 2006 22:00 GMT

Can someone please tell me the version of class files generated from
JVM 1.5. In the class file I see the first 8 bytes in hex
cafebabe0003002d. Does this mean version 48?

Thanks for your help.

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Ben Caradoc-Davies - 21 Feb 2006 22:44 GMT

> Can someone please tell me the version of class files generated from
> JVM 1.5.

49.0

> In the class file I see the first 8 bytes in hex
> cafebabe0003002d. Does this mean version 48?

0x3 = 3, and 0x2d = 45, so this class file is version 45.3 (compatible
with JDK 1.0.2).

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

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Ben Caradoc-Davies <ben@wintersun.org>
http://wintersun.org/
"Those who deny freedom to others deserve it not for themselves."
- Abraham Lincoln

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Roedy Green - 24 Feb 2006 20:25 GMT

On 21 Feb 2006 14:00:39 -0800, "soup_or_power@yahoo.com"
<soup_or_power@yahoo.com> wrote, quoted or indirectly quoted someone
who said :

>Can someone please tell me the version of class files generated from
>JVM 1.5. In the class file I see the first 8 bytes in hex
>cafebabe0003002d. Does this mean version 48?

Either use JarCheck or look inside at the source code. It has a table
of JVM version vs internal version number.

see http://mindprod.com/products1.html#JARCHECK

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Canadian Mind Products, Roedy Green.
http://mindprod.com Java custom programming, consulting and coaching.

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Java 1.5 Class Version

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