0 votes
in Education by (1.3m points)
I am beginner of JAVA and JSP. I am doing semester project on appengine. I have deployed project and there are no compilation or other errors. But when I open my application link it gives an error which is

Error: Server Error

The server encountered an error and could not complete your request.

If the problem persists, please report your problem and mention this error message and the query that caused it.

In my application logs I have seen three types of problems which are

/favicon.ico 404 9ms 0kb

182.177.75.115 - - [19/Dec/2011:05:29:57 -0800] "GET /favicon.ico HTTP/1.1" 404 0 - - "cloudisapp.appspot.com" ms=9 cpu_ms=0 api_cpu_ms=0 cpm_usd=0.000033

No handlers matched this URL.

Uncaught exception from servlet

java.lang.UnsupportedClassVersionError: com/google/mystorage/server/GreetingServiceImpl : Unsupported major.minor version 51.0

java.lang.UnsupportedClassVersionError: com/google/mystorage/server/GreetingServiceImpl : Unsupported major.minor version 51.0

This request caused a new process to be started for your application, and thus caused your application code to be loaded for the first time. This request may thus take longer and use more CPU than a typical request for your application.

JavaScript questions and answers, JavaScript questions pdf, JavaScript question bank, JavaScript questions and answers pdf, mcq on JavaScript pdf, JavaScript questions and solutions, JavaScript mcq Test , Interview JavaScript questions, JavaScript Questions for Interview, JavaScript MCQ (Multiple Choice Questions)

1 Answer

0 votes
by (1.3m points)
The error under 2. means that you are compiling classes under certain JDK version and then trying to run them under the older version of JDK/JRE.

Since AppEngine supports java 5 and 6, I'm guessing that you use Java 7 (OpenJDK)?

Btw, error under 1. is not serious: you are just missing a favicon. See this: http://www.w3.org/2005/10/howto-favicon

Learn More with Blogmepost

blogmepost Online Test

NCERT Questions & Answers

  • NCERT Class 12 Maths Solutions
  • NCERT Class 12 Physics Solutions
  • NCERT Class 12 Chemistry Solutions
  • NCERT Class 12 Biology Solutions
  • NCERT Class 10 Science Solutions
  • NCERT Class 10 Maths Solutions
blogmepost Q&A

CBSE Questions & Answers Portal

  • CBSE Class 12 Maths Questions Answers
  • CBSE Class 12 Physics Questions Answers
  • CBSE Class 12 Chemistry Questions Answers
  • CBSE Class 12 Biology Questions Answers
  • CBSE Class 10 Science Questions Answers
  • CBSE Class 10 Maths Questions Answers
Blogmepost

Learn Math Formula, Revise Notes

  • JEE Crash Course Questions & Answers
  • NCERT Course Questions and Answers
  • CBSE Board Questions Bank
  • ICSE Board Questions Bank
  • Free Study Materials
  • Question & Answers Bank for All Classes
  • Text Book Solutions
  • Previous Year Question Paper
  • NCERT Book Solutions

  • NCERT
  • NCERT Solutions
  • NCERT Solutions for Class 12 Maths
  • NCERT Solutions for Class 12 Physics
  • NCERT Solutions for Class 12 Chemistry
  • NCERT Solutions for Class 12 Biology
  • NCERT Solutions for Class 11 Maths
  • NCERT Solutions for Class 11 Physics
  • NCERT Solutions for Class 11 Chemistry
  • NCERT Solutions for Class 11 Biology
  • NCERT Solutions for Class 10 Maths
  • NCERT Solutions for Class 10 Science
  • NCERT Solutions for Class 9 Maths
  • NCERT Solutions for Class 9 Science
  • CBSE Classes

  • CBSE Class 5 Questions
  • CBSE Class 6 Questions
  • CBSE Class 7 Questions
  • CBSE Class 8 Questions
  • CBSE Class 9 Questions
  • CBSE Class 10 Questions
  • CBSE Class 10 Maths Questions
  • CBSE Class 11 Commerce Questions
  • CBSE Class 11 Engineering Questions
  • CBSE Class 11 Medical Questions
  • CBSE Class 12 Commerce Questions
  • CBSE Class 12 Maths Questions
  • CBSE Class 12 Engineering Questions
  • CBSE Class 12 Medical Questions
  • BOARDS

  • CBSE
  • ICSE
  • NCERT
  • IGCSE
  • Andhra Pradesh
  • Bihar
  • Gujarat
  • Jharkhand
  • Karnataka
  • Kerala
  • Madhya Pradesh
  • Maharashtra
  • Punjab
  • Rajasthan
...