You deploy your custom Java application to Google App Engine. It fails to deploy and gives you the following stack trace. What should you do?

The correct answer is B. Digitally sign all of your JAR files and redeploy your application. Signing the JAR files grants it permissions. https://docs.oracle.com/javase/tutorial/deployment/jar/signindex.html

Submitted by katya_ua· Mar 30, 2026Managing implementation

Question

You deploy your custom Java application to Google App Engine. It fails to deploy and gives you the following stack trace. What should you do?

Exhibit

Options

AUpload missing JAR files and redeploy your application.
BDigitally sign all of your JAR files and redeploy your application
CRecompile the CLoakedServlet class using and MD5 hash instead of SHA1

How the community answered

(28 responses)

A
4% (1)
B
93% (26)
C
4% (1)

Explanation

Signing the JAR files grants it permissions. https://docs.oracle.com/javase/tutorial/deployment/jar/signindex.html

Topics

#App Engine#Java deployment#JAR signing#application deployment

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