Build a JavaFX 8 app with sbt

Sbt is a simple build tool from the scala community. It is a great tool to build java and scala project.

The basic configuration of a sbt project is written in the build.sbt.

With the version 8 of Java and JavaFX, an important fact is that the jfxrt.jar (javafx library) moved to “$JAVA_HOME/jre/lib/ext/jfxrt.jar” with Java8 (from “$JAVA_HOME/jre/lib/jfxrt.jar” with Java7). With sbt, you have to define the path of this jar file.

Example of build.sbt file for a simple Java8 and Javafx8 project:

organization := "Francois Cabrol"

name := "My app"

version := "0.0.1"

autoScalaLibrary := false

//Define the java version to use
javacOptions ++= Seq("-source", "1.8", "-target", "1.8")

//Add Javafx8 library
unmanagedJars in Compile += Attributed.blank(file(System.getenv("JAVA_HOME") + "/jre/lib/ext/jfxrt.jar"))

// Define all libraries to get from maven repository
// JUnit Interface 0.10
libraryDependencies ++= Seq(
   "com.novocode" % "junit-interface" % "0.10" % "test"
)

Note that the same following line should be needed in any ScalaFx8 project:

//Add Javafx8 library
unmanagedJars in Compile += Attributed.blank(file(System.getenv("JAVA_HOME") + "/jre/lib/ext/jfxrt.jar"))

Hope this will be useful!