Ubuntu + scala REPL, Commands not typed on console

Question

I am using Ubuntu 18.04 + Scala 2.11.12 (OpenJDK 64-Bit Server VM, Java 1.8.0_162).

Once I open the scala shell, I am not able to see anything that I type. It gets typed

Answer 1

scala 2.11.12 as described above throws some error before the REPL is started, which is taken care in scala 2.12.x Instead remove Scala and Install the latest scala package with dpkg

sudo apt-get remove scala-library scala
sudo wget www.scala-lang.org/files/archive/scala-2.12.8.deb
sudo dpkg -i scala-2.12.8.deb