I am trying to enhance a class at build time, but I get an error message.

Here is my command line:

  [exec] C:\document\eclipse350\webJava\OpenJpaNys>java -cp
src\java;build;lib\openjpa-2.0.0-beta2.jar;lib\openjpa-all-2.0.0-beta2.jar
org.apache.openjpa.enhance.PCEnhancer com.aurigen.openjpanys.Message.java

Here is the error I am getting:

  [exec] Exception in thread "main"
org.apache.commons.lang.exception.NestableRuntimeException: Error extracting
class information from "com.aurigen.openjpanys.Message.java".
  [exec]  at
org.apache.openjpa.lib.meta.ClassArgParser.parseTypeNames (ClassArgParser.java:226)
  [exec]  at
org.apache.openjpa.lib.meta.ClassArgParser.parseTypes (ClassArgParser.java:161)
  [exec]  at
org.apache.openjpa.enhance.PCEnhancer.run (PCEnhancer.java:4638)
  [exec]  at
org.apache.openjpa.enhance.PCEnhancer.run (PCEnhancer.java:4601)
  [exec]  at
org.apache.openjpa.enhance.PCEnhancer$1.run(PCEnhancer.java:4571)
  [exec]  at
org.apache.openjpa.lib.conf.Configurations.launchRunnable (Configurations.java:725)
  [exec]  at
org.apache.openjpa.lib.conf.Configurations.runAgainstAllAnchors (Configurations.java:715)
  [exec]  at
org.apache.openjpa.enhance.PCEnhancer.run (PCEnhancer.java:4566)
  [exec]  at
org.apache.openjpa.enhance.PCEnhancer.main (PCEnhancer.java:4557)
  [exec] Caused by: java.io.FileNotFoundException:
com.aurigen.openjpanys.Message.java (The system cannot find the file
specified)
  [exec]  at java.io.FileInputStream.open(Native Method)
  [exec]  at java.io.FileInputStream.<init>(Unknown Source)
  [exec]  at java.io.FileReader.<init>(Unknown Source)
  [exec]  at
org.apache.openjpa.lib.meta.ClassArgParser.getFromJavaFile (ClassArgParser.java:339)
  [exec]  at
org.apache.openjpa.lib.meta.ClassArgParser.parseTypeNames (ClassArgParser.java:219)
  [exec]  ... 8 more

Can anyone tell me what is wrong?

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