Class bytecode version number

[Andrew Thompson]

How do I ascertain the 'class format' of classes supplied
by the user? As in, the string/number that represents the
Java version that was specified as the -target at time of
compilation.

(I want to add the information into Appleteer's report.)

 

[Roedy Green]

How do I ascertain the 'class format' of classes supplied
by the user? As in, the string/number that represents the
Java version that was specified as the -target at time of
compilation.

You can study the first few bytes of the class file.

see the source code at http://mindprod.com/products1.html#JARCHECK
--
Roedy Green Canadian Mind Products
http://mindprod.com
PM Steven Harper is fixated on the costs of implementing Kyoto, estimated as high as 1% of GDP.
However, he refuses to consider the costs of not implementing Kyoto which the
famous economist Nicholas Stern estimated at 5 to 20% of GDP

 

[Daniel Pitts]

How do I ascertain the 'class format' of classes supplied
by the user? As in, the string/number that represents the
Java version that was specified as the -target at time of
compilation.

(I want to add the information into Appleteer's report.)

It's actually quite simple:
<http://java.sun.com/docs/books/jvms/second_edition/html/ClassFile.doc.html>