Setting up Java
From Exilent
Install Java
Exilent currently works only with Java 8.
http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html
Default Java version
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.
In order to run Exilent you have to make sure you have Java 8 set as default.
See also: Resolving Java problems