java.lang.NullPointerException: This exception has no message.

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java.lang.NullPointerException:
at controller.BlogService.InitExamples(BlogService.java:60)
at controller.BlogService.(BlogService.java:29)
at controller.BlogController.init(BlogController.java:38)
at javax.servlet.GenericServlet.init(GenericServlet.java:244)

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