There's nothing more frustrating than trying to get Minecraft to work when you just want to play. When Minecraft's just not working, an error message will often pop up that gives you a clue concerning what's wrong. Here's the quick fix to get Minecraft up and running again after getting a JNI Error.
Why does JNI Error occur in Minecraft?
The most common reason you'll see the message in Minecraft that says "A JNI Error Has Occurred" is that your Java software is running on an outdated version. This happens because as Minecraft is continuously updated by developers, the game is also updated with newer versions of Java. When you have an older version of Java installed, your game is no longer compatible with your installed software.
How to fix 'A JNI Error Has Occurred' Error in Minecraft
The fix for this error is extremely simple since—all you need to do is install the newest version of Java. To do this, check the Oracle site to see which version of Java is the most current. Use the files at the bottom of the page to download the newest version of Java. Once the installer has finished, you'll be able to restart your Minecraft game and play with no issues.
Want to read more about Minecraft? Check out When does Minecraft The Wild update come out? on Pro Game Guides.