After LOADing .jar file in to the oracle database some classes r invalid

Hi I have a .jar file to load it into the oracle database 11g.
I use load java to load the .jar file.... I dont mention any resolver so I assume that all the .class files inside .jar are loaded as the schema user objects . Eg: if my schema is SCOTT they are loaded as SCOTT objects .. correct me if iam wrong because i see these lines on a site
Many Java classes contain references to other classes, which is the essence of reusing code. A conventional Java virtual machine searches for classes, ZIP, and JAR files within the directories specified in the CLASSPATH. In contrast, the Oracle Java virtual machine searches database schemas for class objects. With Oracle, you load all Java classes within the database, so you might need to specify where to find the dependent classes for your Java class within the database.
All classes loaded within the database are referred to as class schema objects and are loaded within certain schemas. All JVM classes, such as java.lang., are loaded within PUBLIC. If your classes depend upon other classes you have defined, you will probably load them all within your own schema. For example, if your schema is SCOTT, the database resolver (the database replacement for CLASSPATH) searches the SCOTT schema before PUBLIC. The listing of schemas to search is known as a resolver spec. Resolver specs are for each class, whereas in a classic Java virtual machine, CLASSPATH is global to all classes.*
When locating and resolving the interclass dependencies for classes, the resolver marks each class as valid or invalid, depending on whether all interdependent classes are located. If the class that you load contains a reference to a class that is not found within the appropriate schemas, the class is listed as invalid. Unsuccessful resolution at runtime produces a "class not found" exception. Furthermore, runtime resolution can fail for lack of database resources if the tree of classes is very large.
Now my question is that.... why are some of the classes becoming invalid... ?
Edited by: learning_man on Mar 4, 2010 10:26 AM

after loading class i see some additional characers prior to class name when i query user_objects and object_type='JAVA CLASS'

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