Setting up Java

Exilent currently works only with Java 8 (JRE/JDK).

There can be several Java versions installed on a computer at the same time. When you double click a JAR file it will be executed on the Java version which is set as default.

If you get errors about unrecognized option and not being able to create Java Virtual Machine then its possible that you have Java 9+ installed and set as default.

* Java HotSpot(TM) 64-Bit Server VM warning: Option UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in a future release.
* Unrecognized option: -Xincgc
* Error: Could not create the Java Virtual Machine.
* Error: A fatal exception has occurred. Program will exit.

Verify default Java version

Open up a Command Prompt/Terminal and type java -version. This will print out the current default Java version.

1.8.x means Java 8, if you have anything else then you need to follow the next steps.

Removing other Java versions

If you are on Mac you need to remove other versions of Java before installing Java 8.

To do this, navigate to /Library/Java/JavaVirtualMachines in your file explorer and delete the folders which are not Java 8.

Install Java 8

Search for java 8 jdk in Google. It should be the first result (Java SE Development Kit 8).

https://www.google.com/search?q=java+8+jdk

• Accept the License Agreement
• Select the version you need (Linux/Mac/Windows). You should pick the x64 (64 bit) version over the x86 (32 bit).
• Download and install it.
• Restart your computer if it says its required.