CODEWITHSUNDEEP
scalainstallation
0mcg0
0mcg0

Reputation: 451

Scala: packages cannot be represented as URI

I have openjdk, scala and sbt, all installed via brew. I'm trying to get setup to work on the scala track on exercism. I'm having no troubles with Java or anything that uses the JVM like clojure, but when I try to test my installation of scala by running the test for the exercism hello example:

$ sbt test

I get a bunch of errors that seem to start with this:

java.io.IOError: java.lang.RuntimeException: /packages cannot be represented as URI

My installed versions are as follows:

$ java --version
openjdk 13.0.1 2019-10-15
OpenJDK Runtime Environment AdoptOpenJDK (build 13.0.1+9)
OpenJDK 64-Bit Server VM AdoptOpenJDK (build 13.0.1+9, mixed mode, sharing)

$ scala -version
Scala code runner version 2.13.1 -- 

$ sbt --version
sbt version in this project: 1.3.8
sbt script version: 1.3.8

I've looked and seen this error in a few questions but not seen a way to fix it.

Upvotes: 44

Views: 37794

Answers (10)

Maaddhu Mikkili
Maaddhu Mikkili

Reputation: 1

XWZ's answer helped me too. Thanks.

Thought it was worth adding the compatibility chart here: https://docs.scala-lang.org/overviews/jdk-compatibility/overview.html#scala-compatibility-table

I was using Scala 2.13.0, but using JDK 17, so got the error. Once I switched to JDK 8, REPL worked fine.

Upvotes: 0

Jacen Barefoot
Jacen Barefoot

Reputation: 11

What helped me here was:

File > Settings > Build, Execution, Deployment > Compiler > Scala Compile Server

Beside JDK, I set it to 1.8, built the application, issue was resolved.

Upvotes: 1

Peerachai Deesongkram
Peerachai Deesongkram

Reputation: 1

In my case, it is related to Intellij's Scala compile server settings.

go to settings -> Build, Exec... -> Compiler -> Scala Compile Server

uncheck use compile server

this solved the issue for me

Upvotes: 0

zcenao21
zcenao21

Reputation: 1

Settings -> Build, Execution, Deployment -> Scala Compiler -> Scala Compile Server work for me

Upvotes: 0

Thammarith
Thammarith

Reputation: 772

I found this S/O answer solves my issue:

This is a Scala compiler bug. Please upgrade to the latest Scala point release, 2.12.16.

Upvotes: 1

Jirayu S
Jirayu S

Reputation: 391

IntelliJ:

  • Go to File -> Settings -> Build, Execution, Deployment -> Build Tools -> sbt
  • Make sure Use sbt shell for build is checked

Upvotes: 0

Ram Ghadiyaram
Ram Ghadiyaram

Reputation: 29237

Intellij :

open Settings -> Build, Execution, Deployment -> Scala Compiler -> Scala Compile Server, then change the JDK to the one your project used. This solution solved my problem.

Upvotes: 4

David Procházka
David Procházka

Reputation: 117

In my case, in Intellij IDEA, I had JAVA_HOME as well as sbt JRE from the previous answer set to 1.8, but I completely forgot about the Project SDK, which was set to an incompatible version.

Ctrl + Alt + Shift + S > Project Settings > Project > Project SDK

Setting this to 1.8 as well as language levels of modules to 8 fixed my issues.

Upvotes: 6

pin
pin

Reputation: 111

I've got the same issue on IntelliJ IDEA and solved it with

Settings > Build, Exec... > Build Tools > sbt > JRE > set to 1.8.

JAVA_HOME has not resolve it in my case

Upvotes: 11

XWZ
XWZ

Reputation: 763

I solved the issue by installing a java version of 1.8 and set JAVA_HOME towards this version.

export JAVA_HOME="/Library/Java/JavaVirtualMachines/jdk1.8.0_251.jdk/Contents/Home"

Upvotes: 61

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