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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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