SBT is a build tool for Scala, Java, and more. It requires Java 1.6 or later.
Installation of SBT
$ mkdir $HOME/bin$ wget http://repo.typesafe.com/typesafe/ivy-releases/org.scala-sbt/sbt-launch/0.13.1/sbt-launch.jar -O $HOME/bin/sbt-launch.jar
$ cat << EOM >> $HOME/bin/sbt
SBT_OPTS="-Xms512M -Xmx1536M -Xss1M -XX:+CMSClassUnloadingEnabled -XX:MaxPermSize=256M"
java $SBT_OPTS -jar $HOME/bin/sbt-launch.jar "$@"
EOM
$ chmod u+x $HOME//bin/sbt
$ echo export PATH=$PATH:$HOME/bin >>$HOME/.bashrc
Create Scala Hello World Program
$ mkdir scala-demo
$ cd scala-demo
$ echo 'object Hi { def main(args: Array[String]) = println("Hello World! Scala") }' > HelloWorld.scala
$ sbt run
output:>> Hello World! Scala
Moreover sbt works purely by convention. sbt will find the following automatically:
- Sources in the base directory
- Sources in src/main/scala or src/main/java
- Tests in src/test/scala or src/test/java
- Data files in src/main/resources or src/test/resources
- jars in lib
Here are some of the most common sbt commands. For a more complete list, see Command Line Reference.
- clean Deletes all generated files (in the target directory).
- compile Compiles the main sources (in src/main/scala and src/main/java directories).
- test Compiles and runs all tests.
- console Starts the Scala interpreter with a classpath including the compiled sources and all dependencies. To return to sbt, type :quit, Ctrl+D (Unix), or Ctrl+Z (Windows).
- run
* Runs the main class for the project in the same virtual machine as sbt. - package Creates a jar file containing the files in src/main/resources and the classes compiled from src/main/scala and src/main/java.
- help
Displays detailed help for the specified command. If no command is