I currently have Scala 2.12.3 installed and wish to switch it to 2.10. How would I go about doing this in Eclipse? I could not find any guides on it.
Its in eclipse's settings -> Scala Compiler.
You can try this link,
http://scala-ide.org/blog/scala-installations.html
You can change the scala version used for any project by
right click on project->scala->set the scala installation
you will get list of scala versions supported
Related
I am using eclipse with m2eclipse-scala plugin. Currently, I get the following error message:
exampleA_2.10-2.0.1.jar of module build path is cross-compiled with an incompatible version of Scala (2.10.0). In case this report is mistaken, this check can be disabled in the compiler preference page
It looks like the versions of extracted Scala and Scala IDE match. I just wanted to make sure that this is a "false-negative" as described here and can be safely turned off.
As #The Archetypal Paul suggested, it was because I was using wrong Scala library.
If you are using Scala 2.11 (check at About Scala IDE -> installation details), you can downgrade by following instruction here. It's a lot easier than uninstalling and re-installing Scala IDE as other Stackoverflow posts recommend.
I also faced the same issue->
I am trying to use casbah jar in scala to integrate with mongodb.
After analyzing the problem i found that ->
i am trying to use casbah 2.9.1 version and my scala version is 2.11.8
Root-Cause of such error is : your jar is compiled in 2.9.0 version and you are using scala 2.11.8 version
So, to resolve that i use the jar that is compiled into 2.11 scala version-
<groupId>org.mongodb</groupId>
<artifactId>casbah-core_2.11</artifactId>
<version>3.1.1</version>
I was facing similar issue in Eclipse IDE where I had built a Spark scala project in Maven. The scala version was set to 2.11.
Later, I upgraded Scala-Ide plugin in Eclipse after which my project marked below errors,
exampleA_2.10-2.0.1.jar of module build path is cross-compiled with an incompatible version of Scala (2.10.0). In case this report is mistaken, this check can be disabled in the compiler preference page
Right click project folder > scala > set scala version. Here my scala version was displayed as 2.10. I selected 2.11 and removed all the error messages.
I installed scalaIDE on ubuntu. as installed, it has both scala 2.11.6 and 2.10.5 build in. The version I need is 2.10.4. How do I add that version into scalaIDE?
Window -> Preferences -> Scala -> Installations
Click Add. Probably you will already have the version of scala you need in ~/.sbt/boot. Just choose, name it and click Ok.
Reference: BYOS (Bring Your Own Scala)
I have en error with java annotation on scala enums. This scala bug seems to be fixed, but Inteliij Idea shows an error. So how I can ensure that intellij Idea scala plugin uses actual scala version?
You can check the Scala compiler and language level of your project under your project options from File > Project Structure... > Modules > Scala
I don't know if this has been updated by IntelliJ (currently on 2020.02 version) or not, but it was under:
File > Project Structure > Platform Settings (left tab) > Global Libraries > Scala version"
I've got the newest Scala IDE (3.0.2) and I want to compile my stuff with Scala 2.9.3. I've added that version of Scala as a Maven dependency and removed the default 2.10.0 that the IDE bundles with the new project (not my system Scala version, by the way!). The IDE then tells me Scala is not on the build path, even when I add in the jars to the build path. When I try to add a "Scala Library" through that dialogue, it doesn't give me any options and adds 2.10.0. I've gone through the project settings, and would have expected to see a "Scala version" option, but there isn't (only a "Java version" option.)
My question is this:
How do I add a different version of Scala as the Scala library in Scala IDE 3.0.2 ?
Thanks!
I asked a similar question a while back. Short answer is, you can't.
My post:
Scala-IDE 3.0: 2.9.2 -> 2.10.0
I am building my first Scala/Play application and after I create and import an eclipse project from the Play shell, I get 17 errors.
akka-actor_2.10.jar is cross compiled with an incompatible version of Scala (2.10)
akka-slf4j_2.10.jar is cross compiled with an incompatible version of Scala (2.10)
anorm_2.10.jar ...
play_2.10.jar ...
play_iterates_2.10.jar ...
The list goes on to include the Scala jars, scalaz jars, etc...
I am using:
Eclipse 4.2.2
Scala ide 3.0.0.nightly-2_09
Scala 2.10
Play 2.1
Has someone experienced the same thing?
Is it possible you are using Scala IDE built for for Scala 2.9.x ?
Make sure you use the one for 2.10.x:
http://download.scala-ide.org/sdk/e38/scala210/dev/site/