javax.servlet.ServletException: Customer ID is invalid

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via Coderanch by Piotr Nowicki, 1 year ago
Customer ID is invalid
javax.servlet.ServletException: Customer ID is invalid
at com.example.ocmjd.BookServlet.doGet(BookServlet.java:22)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)

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