protected boolean isClassExempt(String name, String[] includedClassPrefixes) {
    if (includedClassPrefixes != null) {
      for (String clsName : includedClassPrefixes) {
        if (name.startsWith(clsName)) {
          return false;
        }
      }
    }
    for (String exemptPrefix : CLASS_PREFIX_EXEMPTIONS) {
      if (name.startsWith(exemptPrefix)) {
        return true;
      }
    }
    return false;
  }
Determines whether the given class should be exempt from being loaded by this ClassLoader.
@param name the name of the class to test.
@return true if the class should *not* be loaded by this ClassLoader; false otherwise.
hbase-common/src/main/java/org/apache/hadoop/hbase/util/CoprocessorClassLoader.java