Scala REPL startup error “class file is broken” [duplicate]

Answer 1

Try to select other alternative provider java:

$ sudo update-alternatives --config java

There are some choices for the alternative java (providing /usr/bin/java).

  Selection    Path                                            Priority   Status
------------------------------------------------------------
  0            /usr/lib/jvm/java-8-oracle/jre/bin/java          1071      auto mode
  1            /usr/lib/jvm/java-6-openjdk-amd64/jre/bin/java   1061      manual mode
  2            /usr/lib/jvm/java-7-openjdk-amd64/jre/bin/java   1051      manual mode
* 3            /usr/lib/jvm/java-8-oracle/jre/bin/java          1065      manual mode

Press enter to keep the current choice[*], or type selection number: 

EDITED: Scala is now abailable for Java 8 :-)

see http://www.scala-lang.org/news/2013/09/18/release-notes-v2.10.3-RC2.html