Question

我正在尝试使用以下步骤在Scala解释器中编写一些Scala代码。我正在使用Windows。

打开命令提示符并转到项目根目录
键入sbt然后控制台以启动Scala REPL
以下面的消息打开Scala REPL

消息：

D:\example\example>sbt
"C:\Users\rajnish.kumar\.sbt\preloaded\org.scala-sbt\sbt\"1.0.4"\jars\sbt.jar"
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=256m; support was removed in 8.0
[info] Loading project definition from D:\example\example\project
[info] Set current project to bigdata-example (in build file:/D:/example/example/)

> console
[info] Starting scala interpreter...
[info]
[ERROR] Terminal initialization failed; falling back to unsupported
java.lang.NoClassDefFoundError: Could not initialize class scala.tools.fusesource_embedded.jansi.internal.Kernel32
        at scala.tools.fusesource_embedded.jansi.internal.WindowsSupport.getConsoleMode(WindowsSupport.java:50)
        at scala.tools.jline_embedded.WindowsTerminal.getConsoleMode(WindowsTerminal.java:204)
        at scala.tools.jline_embedded.WindowsTerminal.init(WindowsTerminal.java:82)
        at scala.tools.jline_embedded.TerminalFactory.create(TerminalFactory.java:101)
        at scala.tools.jline_embedded.TerminalFactory.get(TerminalFactory.java:158)
        at scala.tools.jline_embedded.console.ConsoleReader.<init>(ConsoleReader.java:229)
        at scala.tools.jline_embedded.console.ConsoleReader.<init>(ConsoleReader.java:221)
        at scala.tools.jline_embedded.console.ConsoleReader.<init>(ConsoleReader.java:209)
        at scala.tools.nsc.interpreter.jline_embedded.JLineConsoleReader.<init>(JLineReader.scala:62)
        at scala.tools.nsc.interpreter.jline_embedded.InteractiveReader.<init>(JLineReader.scala:34)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
        at scala.tools.nsc.interpreter.ILoop$$anonfun$scala$tools$nsc$interpreter$ILoop$$instantiater$1$1.apply(ILoop.scala:858)
        at scala.tools.nsc.interpreter.ILoop$$anonfun$scala$tools$nsc$interpreter$ILoop$$instantiater$1$1.apply(ILoop.scala:855)
        at scala.tools.nsc.interpreter.ILoop.scala$tools$nsc$interpreter$ILoop$$mkReader$1(ILoop.scala:862)
        at scala.tools.nsc.interpreter.ILoop$$anonfun$21$$anonfun$apply$9.apply(ILoop.scala:873)
        at scala.tools.nsc.interpreter.ILoop$$anonfun$21$$anonfun$apply$9.apply(ILoop.scala:873)
        at scala.util.Try$.apply(Try.scala:192)
        at scala.tools.nsc.interpreter.ILoop$$anonfun$21.apply(ILoop.scala:873)
        at scala.tools.nsc.interpreter.ILoop$$anonfun$21.apply(ILoop.scala:873)
        at scala.collection.immutable.Stream$$anonfun$map$1.apply(Stream.scala:418)
        at scala.collection.immutable.Stream$$anonfun$map$1.apply(Stream.scala:418)
        at scala.collection.immutable.Stream$Cons.tail(Stream.scala:1233)
        at scala.collection.immutable.Stream$Cons.tail(Stream.scala:1223)
        at scala.collection.immutable.Stream.collect(Stream.scala:435)
        at scala.tools.nsc.interpreter.ILoop.chooseReader(ILoop.scala:875)
        at scala.tools.nsc.interpreter.ILoop$$anonfun$process$1$$anonfun$apply$mcZ$sp$2.apply(ILoop.scala:914)
        at scala.tools.nsc.interpreter.ILoop$$anonfun$process$1.apply$mcZ$sp(ILoop.scala:914)
        at scala.tools.nsc.interpreter.ILoop$$anonfun$process$1.apply(ILoop.scala:909)
        at scala.tools.nsc.interpreter.ILoop$$anonfun$process$1.apply(ILoop.scala:909)
        at scala.reflect.internal.util.ScalaClassLoader$.savingContextLoader(ScalaClassLoader.scala:97)
        at scala.tools.nsc.interpreter.ILoop.process(ILoop.scala:909)
        at scala.tools.nsc.interpreter.ILoop.main(ILoop.scala:934)
        at xsbt.ConsoleInterface.run(ConsoleInterface.scala:62)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at sbt.compiler.AnalyzingCompiler.call(AnalyzingCompiler.scala:101)
        at sbt.compiler.AnalyzingCompiler.console(AnalyzingCompiler.scala:76)
        at sbt.Console.sbt$Console$$console0$1(Console.scala:22)
        at sbt.Console$$anonfun$apply$2$$anonfun$apply$1.apply$mcV$sp(Console.scala:23)
        at sbt.Console$$anonfun$apply$2$$anonfun$apply$1.apply(Console.scala:23)
        at sbt.Console$$anonfun$apply$2$$anonfun$apply$1.apply(Console.scala:23)
        at sbt.Logger$$anon$4.apply(Logger.scala:85)
        at sbt.TrapExit$App.run(TrapExit.scala:248)
        at java.lang.Thread.run(Thread.java:748)

Welcome to Scala 2.11.8 (Java HotSpot(TM) 64-Bit Server VM, Java 1.8.0_151).
Type in expressions for evaluation. Or try :help.

scala>

现在，当我输入任何内容（例如val s = 30）时，它不会出现在命令窗口中。但是当我点击输入时会显示scala> s: Int = 30

我的Scala版本是2.11.8。

REPL不显示输入

0 个答案: