Bug ID: JDK-8181033 Confusing message: A JNI error has occurred, please check your installation and try again

Type: Bug
Component: tools
Sub-Component: launcher
Affected Version: 9

Priority: P2
Status: Closed
Resolution: Fixed

Submitted: 2017-05-24
Updated: 2019-03-23
Resolved: 2017-05-25

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JDK 10	JDK 9
10Fixed	9 b172Fixed

Error: A JNI error has occurred, please check your installation and try again
Exception in thread "main" java.security.AccessControlException:
access denied ("java.lang.RuntimePermission"
"accessClassInPackage.com.sun.crypto.provider")

java launcher outputs "Error: A JNI error has occurred, please check your installation and try again", very confusing message.  A few attempts to improve this to catch ClassNotFoundException and LinkageError.   

See example test in [1]

[1] http://mail.openjdk.java.net/pipermail/jigsaw-dev/2017-May/012765.html

This is approved for JDK 9 as the confusing "JNI error" message occurs in more cases with JDK 9 when compared to JDK 8 and people are complaining about it.

25-05-2017

JDK 9 Fix Request: Long standing confusing message emitted by the launcher. This is a simple low risk fix to improve the error message.

24-05-2017

Relates :	JDK-8221368 - Error message when module main class cannot be loaded is missing exception details
Relates :	JDK-8167063 - spurious message "A JNI error has occurred" if start-class cannot be initialized