java.lang.NullPointerException: null

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    Root Cause Analysis

    1. java.lang.NullPointerException

      null

      at com.example.helloworld.db.PersonDAO.update()
    2. com.example.helloworld
      PersonResource.updatePerson
      1. com.example.helloworld.db.PersonDAO.update(PersonDAO.java:27)
      2. com.example.helloworld.resources.PersonResource.updatePerson(PersonResource.java:46)
      2 frames
    3. Java RT
      DelegatingMethodAccessorImpl.invoke
      1. sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      2. sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
      3. sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
      3 frames