Scripting for the Java Platform
Scripting for the Java Platform is a framework for embedding scripts into Java source code.
There is no requirement for a given Java Virtual Machine to include any engines by default, but the Oracle JVM includes a JavaScript engine, based on Rhino version 1.6R2 before Java 8, and Nashorn since Java 8.
Scripting for the Java Platform was developed under the Java Community Process as JSR 223. The final release of JSR 223 happened on December 11, 2006. The specification, however, was withdrawn later on December 13, 2016 after a Maintenance Review Ballot, where it was decided that this functionality would be included as an integral part of Java 9 and onward.