doc.FAQ.HowDoIInterpretClasspaths

• Was CLASSPATH set at the time of reported failure? Review the output of set, the Windows autoexec.bat file, or Windows System utility screen-shots for corroboration.
  
• Does CLASSPATH point to a valid .jar file? Review the output of ls or dir in the directory structure for the purpose of corroboration.
  
• Do file or directory permissions issues restrict access to the .jar file?
  
• Does the .jar file JDK version correspond with the client JRE version?
  
• Does CLASSPATH need to be set within application code?