scala-start

• 참고 서적 : [Book] 프로그래밍 스칼라 (Programming Scala, ISBN: 9788968489457)

JVM 설치하기

맥북에서 설치하기

• 현재 설치된 JVM 버전 확인하기

java -version

리눅스에서 설치하기

sudo apt-get update
sudo apt-get install default-jdk
java --version

openjdk 11.0.9.1 2020-11-04

install sdkman (for command line cording)

ref. https://sdkman.io/install

  sudo apt-get install zip
  sudo apt-get install unzip
  curl -s "https://get.sdkman.io" | bash
  source "$HOME/.sdkman/bin/sdkman-init.sh"
  sdk version

install

ref. https://www.scala-sbt.org/1.x/docs/Installing-sbt-on-Linux.html

  sdk list java

Use the Identifier for installation: $ sdk install java 11.0.3.hs-adpt

  sdk install java 11.0.3.hs-adpt
  sdk install sbt

run sbt

  sbt

run scala console in sbt cli

  console

scala> writting your scala code

SCALA PRACTICE with sbt cli

exit scala console

  :quit

install scala compiler on ubuntu 20.04

  sudo apt-get install scala
  sudo apt-get remove scala-library scala
  sudo wget https://downloads.lightbend.com/scala/2.12.3/scala-2.12.3.deb
  sudo dpkg -i scala-2.12.3.deb
  scala -version

build test

make scala code file

  scala src/main/scala/progscala2/introscala/upper1.sc

run scala console with $scala

  $scala

SCALA PRACTICE with $scala