“java.lang.SecurityException: Prohibited package name: java.sql” error happen only when executing outside of Eclipse

Question

I am writing a Topic Modeling program using Apache Tika to extract the text contents from other file type. Actually It run perfectly on Eclipse. But when I export to JAR fil

Answer 1

The 'prohibited package name' is thrown, when you are using a class of a package starting with 'java.' that is not found in your rt.jar. Either you created such a class yourself, or you have a .jar file containing such a class in your classpath.

If it's the former, put the class in another package. If it's the latter, try to find the .jar file containing this class (e.g. print out the classpath found in the system property java.class.path)

Answer 2

Ran into this issue when creating a Runnable JAR via Eclipse (Mars).

In the Jar generator I was setting the library handling option to

Package required libraries into generated JAR

but switching to

Extract required libaries

solved the issue