ORA-29521 / Referenced Name Java / Lang / CharSequence Could Not Be Found

I have a java class that I'd like to be able to call from PL/SQL. The class when executed by Java alone works fine. So I'm trying to do a loadjava to get it into the database as an object.

Testing

I run:

loadjava -user myuser/mypass -oci8 -resolve testClass.class

fails with :

errors : class testClass
ORA-29521: referenced name java/lang/CharSequence could not be found
The following operations failed
class testClass: resolution
exiting : Failures occurred during processing

Debug :The same loadjava command works with a simple hello.class that is below:

public class Hello {
public static void main(String[] args) {
System.out.println("hello world");
}
}

Quick thought The other class testClass.class has many imports, so I'm thinking thats the problem, such as:

import java.util.ArrayList;
import java.util.Collections;
import java.util.Enumeration;
import java.util.Hashtable;
import javax.naming.Context;
import javax.naming.NamingEnumeration;
import javax.naming.NamingException;

[code]....

So what do I need to do to use loadjava with a class that uses many imports?