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Message:
Class Loading Problem----Illegal constant pool type & Illegal UTF8 string in constant pool
Posted by Tao Tao on April 29, 2000 at 4:31 PM
Hello, I have a strange problem with my custom remote class loading in my Jini
project. I need to upload some classes to the http server, so the Jini
client can
retrieve those classes via a custom remote class loader. The problem is: Sometimes the classes are downloaded smoothly and the Jini client works
fine,
however, when I run a second time, "Illegal constant pool type" or
"Illegal UTF8
string in constant pool" will appear. Then I run a third time, fail in
the same way,
run a fourth time, fail in the same way, run a fifth time, everything is
fine! Since this problem is so unstable that I have no idea if this is the
problem with
my class loader or this is a problem with file transmission. Attached please find the original error messages. Your help is going to be highly appreciated. Tao
Loading from URL:
http://xxx.xxx.xxx.xxx/info/grads/tyt/classes/jatwing/Wrapper.class
The loaded class is instantiated successfully.
Loading from URL:
http://xxx.xxx.xxx.xxx/info/grads/tyt/classes/cruiser2/Cruiser.class
java.lang.ClassFormatError: cruiser2/Cruiser (Illegal constant pool
type)
at java.lang.ClassLoader.defineClass0(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java, Compiled
Code)
at java.lang.ClassLoader.defineClass(ClassLoader.java, Compiled
Code)
at ...
Loading from URL:
http://xxx.xxx.xxx.xxx/info/grads/tyt/classes/jatwing/Wrapper.class
The loaded class is instantiated successfully.
Loading from URL:
http://xxx.xxx.xxx.xxx/info/grads/tyt/classes/cruiser1/Cruiser.class
java.lang.ClassFormatError: cruiser1/Cruiser (Illegal UTF8 string in
constant pool)
at java.lang.ClassLoader.defineClass0(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java, Compiled
Code)
at java.lang.ClassLoader.defineClass(ClassLoader.java, Compiled
Code)
at ....
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