com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.

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    com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.

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    Root Cause Analysis

    1. com.mysql.jdbc.exceptions.jdbc4.CommunicationsException

      Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.

      at sun.reflect.NativeConstructorAccessorImpl.newInstance0()
    2. Java RT
      DelegatingConstructorAccessorImpl.newInstance
      1. sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)[na:1.8.0_101]
      2. sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)[na:1.8.0_101]
      3. sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)[na:1.8.0_101]
      3 frames