如何在 Java 11 中运行 Scala REPL？

huangapple
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英文:

How to run scala repl with java 11?

问题

我已经在我的Ubuntu 20.04上安装了Java 11；

Java版本：

  1. $ java -version
  2. openjdk version "11.0.8" 2020-07-14
  3. OpenJDK Runtime Environment (build 11.0.8+10-post-Ubuntu-0ubuntu120.04)
  4. OpenJDK 64-Bit Server VM (build 11.0.8+10-post-Ubuntu-0ubuntu120.04, mixed mode, sharing)

Scala版本：

  1. $ scala -version
  2. Scala代码运行器版本 2.11.12 -- 版权所有 2002-2017，LAMP/EPFL

当我尝试运行Scala REPL时，我遇到了以下错误：

  1. 欢迎使用Scala 2.11.12 (OpenJDK 64-Bit Server VM，Java 11.0.8)。
  2. 键入表达式进行评估。或尝试 :help。
  3. 主线程中的异常 "main" java.lang.NoClassDefFoundError: javax/script/Compilable
  4. 	at scala.tools.nsc.interpreter.ILoop.createInterpreter(ILoop.scala:118)
  5. 	at scala.tools.nsc.interpreter.ILoop$$anonfun$process$1$$anonfun$startup$1$1$$anonfun$apply$1.apply(ILoop.scala:971)
  6. 	...

如果我尝试使用Java 8运行（使用update-alternatives --config java更改版本），它可以正常工作：

REPL：

  1. $ scala
  2. cat: /usr/lib/jvm/java-8-openjdk-amd64/jre/release: 文件或目录不存在
  3. 欢迎使用Scala 2.11.12 (OpenJDK 64-Bit Server VM，Java 1.8.0_265)。
  4. 键入表达式进行评估。或尝试 :help。

如何让Scala REPL在Java 11中正常工作？我还每次在切换Java 8和11之间时更改了我的.zshrc文件中的JAVA_HOME。

英文:

I've installed java 11 on my ubuntu 20.04;

The java version:

  1. $ java -version
  2. penjdk version "11.0.8" 2020-07-14
  3. OpenJDK Runtime Environment (build 11.0.8+10-post-Ubuntu-0ubuntu120.04)
  4. OpenJDK 64-Bit Server VM (build 11.0.8+10-post-Ubuntu-0ubuntu120.04, mixed mode, sharing)

The scala version:

  1. $ scala -version
  2. Scala code runner version 2.11.12 -- Copyright 2002-2017, LAMP/EPFL

When i try to run the scala repl i got the error:

  1. Welcome to Scala 2.11.12 (OpenJDK 64-Bit Server VM, Java 11.0.8).
  2. Type in expressions for evaluation. Or try :help.
  3. Exception in thread "main" java.lang.NoClassDefFoundError: javax/script/Compilable
  4. 	at scala.tools.nsc.interpreter.ILoop.createInterpreter(ILoop.scala:118)
  5. 	at scala.tools.nsc.interpreter.ILoop$$anonfun$process$1$$anonfun$startup$1$1$$anonfun$apply$1.apply(ILoop.scala:971)
  6. 	at scala.tools.nsc.interpreter.ILoop$$anonfun$process$1$$anonfun$startup$1$1$$anonfun$apply$1.apply(ILoop.scala:971)
  8. scala> 	at scala.tools.nsc.interpreter.ILoop.savingReader(ILoop.scala:96)
  9. 	at scala.tools.nsc.interpreter.ILoop$$anonfun$process$1$$anonfun$startup$1$1.apply(ILoop.scala:970)
  10. 	at scala.tools.nsc.interpreter.ILoop$$anonfun$process$1.apply$mcZ$sp(ILoop.scala:990)
  11. 	at scala.tools.nsc.interpreter.ILoop$$anonfun$process$1.apply(ILoop.scala:891)
  12. 	at scala.tools.nsc.interpreter.ILoop$$anonfun$process$1.apply(ILoop.scala:891)
  13. 	at scala.reflect.internal.util.ScalaClassLoader$.savingContextLoader(ScalaClassLoader.scala:97)
  14. 	at scala.tools.nsc.interpreter.ILoop.process(ILoop.scala:891)
  15. 	at scala.tools.nsc.MainGenericRunner.runTarget$1(MainGenericRunner.scala:74)
  16. 	at scala.tools.nsc.MainGenericRunner.run$1(MainGenericRunner.scala:87)
  17. 	at scala.tools.nsc.MainGenericRunner.process(MainGenericRunner.scala:98)
  18. 	at scala.tools.nsc.MainGenericRunner$.main(MainGenericRunner.scala:103)
  19. 	at scala.tools.nsc.MainGenericRunner.main(MainGenericRunner.scala)
  20. [ERROR] Failed to disable litteral next character
  21. java.lang.InterruptedException
  22. 	at java.base/java.lang.Object.wait(Native Method)
  23. 	at java.base/java.lang.Object.wait(Object.java:328)
  24. 	at java.base/java.lang.ProcessImpl.waitFor(ProcessImpl.java:495)
  25. 	at jline.internal.TerminalLineSettings.waitAndCapture(TerminalLineSettings.java:339)
  26. 	at jline.internal.TerminalLineSettings.exec(TerminalLineSettings.java:311)
  27. 	at jline.internal.TerminalLineSettings.stty(TerminalLineSettings.java:282)
  28. 	at jline.internal.TerminalLineSettings.undef(TerminalLineSettings.java:158)
  29. 	at jline.UnixTerminal.disableLitteralNextCharacter(UnixTerminal.java:194)
  30. 	at jline.console.ConsoleReader.readLine(ConsoleReader.java:2450)
  31. 	at jline.console.ConsoleReader.readLine(ConsoleReader.java:2373)
  32. 	at jline.console.ConsoleReader.readLine(ConsoleReader.java:2361)
  33. 	at scala.tools.nsc.interpreter.jline.InteractiveReader.readOneLine(JLineReader.scala:59)
  34. 	at scala.tools.nsc.interpreter.InteractiveReader$class.readLine(InteractiveReader.scala:38)
  35. 	at scala.tools.nsc.interpreter.jline.InteractiveReader.readLine(JLineReader.scala:27)
  36. 	at scala.tools.nsc.interpreter.SplashReader.readLine(InteractiveReader.scala:142)
  37. 	at scala.tools.nsc.interpreter.SplashLoop.run(InteractiveReader.scala:71)
  38. 	at java.base/java.lang.Thread.run(Thread.java:834)

If i try to run using java8 (changing the version using update-alternatives --config java) it works:

Repl:

  1. $ scala
  2. cat: /usr/lib/jvm/java-8-openjdk-amd64/jre/release: Arquivo ou diretório não encontrado
  3. Welcome to Scala 2.11.12 (OpenJDK 64-Bit Server VM, Java 1.8.0_265).
  4. Type in expressions for evaluation. Or try :help.
  6. scala>

How can i get scala repl to work along java 11? i've also changed the JAVA_HOME on my .zshrc file everytime i change between java8 and 11.

答案1

得分: 4

Scala 2.11.12 应当与 JDK 11 兼容，参见 版本兼容性表

  1. ## 版本兼容性表
  3. | JDK 版本   | 最低 Scala 版本                 | 推荐 Scala 版本                                           |
  4. |:----------:|:-------------------------------|:---------------------------------------------------------|
  5. | 13, 14     | 2.13.2, 2.12.11                | 2.13.3, 2.12.12                                          |
  6. | 12         | 2.13.1, 2.12.9                 | 2.13.3, 2.12.12                                          |
  7. | 11         | 2.13.0, 2.12.4, 2.11.12        | 2.13.3, 2.12.12, 2.11.12                                 |
  8. | 8          | 2.13.0, 2.12.0, 2.11.0, 2.10.2 | 2.13.3, 2.12.12, 2.11.12, 2.10.7                         |
  9. | 6, 7       | 2.11.0, 2.10.0                 | 2.11.12, 2.10.7                                          |

在我的机器上执行

  1. scala --scala-version 2.11.12 -C--jvm=11

使用 scala-runners 没有报错

  1. ➜  ~ scala --scala-version 2.11.12 -C--jvm=11
  2. 欢迎使用 Scala 2.11.12 (OpenJDK 64-Bit Server VM, Java 11.0.7)。
  3. 输入表达式以进行评估。或者尝试使用 :help。
  5. scala> sys.props("java.specification.version")
  6. res0: String = 11
  8. scala> util.Properties.versionString
  9. res1: String = version 2.11.12
  11. scala>

注意 -C--jvm=11 参数指定了由 coursier 下载的 JDK 版本。

英文:

Scala 2.11.12 should be compatible with JDK 11 according to Version compatibility table

  1. ## Version compatibility table
  3. | JDK version | Minimum Scala versions           | Recommended Scala versions                                 |
  4. |:-----------:|:---------------------------------|:-----------------------------------------------------------|
  5. | 13, 14      | 2.13.2, 2.12.11                  | 2.13.3, 2.12.12                                            |
  6. | 12          | 2.13.1, 2.12.9                   | 2.13.3, 2.12.12                                            |
  7. | 11          | 2.13.0, 2.12.4, 2.11.12          | 2.13.3, 2.12.12, 2.11.12                                   |
  8. | 8           | 2.13.0, 2.12.0, 2.11.0, 2.10.2   | 2.13.3, 2.12.12, 2.11.12, 2.10.7                           |
  9. | 6, 7        | 2.11.0, 2.10.0                   | 2.11.12, 2.10.7                                            |

On my machine executing

  1. scala --scala-version 2.11.12 -C--jvm=11

with scala-runners gives no error

  1. ➜  ~ scala --scala-version 2.11.12 -C--jvm=11
  2. Welcome to Scala 2.11.12 (OpenJDK 64-Bit Server VM, Java 11.0.7).
  3. Type in expressions for evaluation. Or try :help.
  5. scala> sys.props("java.specification.version")
  6. res0: String = 11
  8. scala> util.Properties.versionString
  9. res1: String = version 2.11.12
  11. scala>

Note the -C--jvm=11 argument specifies JDK version which is downloaded by coursier.

huangapple
  • 本文由 发表于 2020年10月6日 23:43:38
  • 转载请务必保留本文链接：https://go.coder-hub.com/64229275.html
  • java
  • scala
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