NullPointerException in ScalacBackendCompiler$1.processMessageLine(ScalacBackendCompiler.java:205)

I am using IDEA 9.0M1 Build 10372

I downloaded and manually installed the Scala plug-in version 0.2.27038.

I am running under Mac OS/X 10.5.8.

I am trying to add a small amount of Scala code to a large Java project. So far, I am just trying to compile the following Scala object:

package com.mspoke.iris.tools

/**
* Analyzes a specified set of (currently just one) feed(s) to determine that feed's hot topics.
*
* @author Dean Thompson
*/


object HotTopicsInFeeds
{
  def main(args: Array[String]) {
    println("Hello World")
  }
}


I have tried many combinations of adding the Scala facet to a Java module, creating a new module to hold the Scala facet, creating a new module but also adding the Scala facet to the java module, etc.  Whenever I try to compile, the output in the IDEA UI just shows a compiler error saying simply "Error:", with no message.

Through the Mac's built-in console application, I am able to see the following output:

9/18/09 12:23:47 PM [0x0-0xa80a8].com.jetbrains.intellij[1606] java.lang.NullPointerException
9/18/09 12:23:47 PM [0x0-0xa80a8].com.jetbrains.intellij[1606]  at org.jetbrains.plugins.scala.compiler.ScalacBackendCompiler$1.processMessageLine(ScalacBackendCompiler.java:205)
9/18/09 12:23:47 PM [0x0-0xa80a8].com.jetbrains.intellij[1606]  at com.intellij.compiler.impl.javaCompiler.CompilerParsingThread.run(CompilerParsingThread.java:30)
9/18/09 12:23:47 PM [0x0-0xa80a8].com.jetbrains.intellij[1606]  at com.intellij.openapi.application.impl.ApplicationImpl$5.run(ApplicationImpl.java:10)
9/18/09 12:23:47 PM [0x0-0xa80a8].com.jetbrains.intellij[1606]  at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:417)
9/18/09 12:23:47 PM [0x0-0xa80a8].com.jetbrains.intellij[1606]  at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:269)
9/18/09 12:23:47 PM [0x0-0xa80a8].com.jetbrains.intellij[1606]  at java.util.concurrent.FutureTask.run(FutureTask.java:123)
9/18/09 12:23:47 PM [0x0-0xa80a8].com.jetbrains.intellij[1606]  at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:651)
9/18/09 12:23:47 PM [0x0-0xa80a8].com.jetbrains.intellij[1606]  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:676)
9/18/09 12:23:47 PM [0x0-0xa80a8].com.jetbrains.intellij[1606]  at java.lang.Thread.run(Thread.java:613)
9/18/09 12:23:47 PM [0x0-0xa80a8].com.jetbrains.intellij[1606]  at com.intellij.openapi.application.impl.ApplicationImpl$1$1.run(ApplicationImpl.java:10)


With sadness, I will have to give up on Scala again until someone can help me past this.

Dean

1 comment
Comment actions Permalink

Hello Dean,

The latest version of the Scala plugin is only compatible with the latest
Maia EAP build, which you can download from:
http://www.jetbrains.net/confluence/display/IDEADEV/Maia+EAP
Please use this IDEA build instead of the old M1 build.

I am using IDEA 9.0M1 Build 10372

I downloaded and manually installed the Scala plug-in version
0.2.27038.

I am running under Mac OS/X 10.5.8.

I am trying to add a small amount of Scala code to a large Java
project. So far, I am just trying to compile the following Scala
object:

package com.mspoke.iris.tools

/**

  • Analyzes a specified set of (currently just one) feed(s) to

determine that feed's hot topics.
*

  • @author Dean Thompson

*/
object HotTopicsInFeeds
{
def main(args: Array[String]) {
println("Hello World")
}
}
I have tried many combinations of adding the Scala facet to a Java
module, creating a new module to hold the Scala facet, creating a new
module but also adding the Scala facet to the java module, etc.
Whenever I try to compile, the output in the IDEA UI just shows a
compiler error saying simply "Error:", with no message.

Through the Mac's built-in console application, I am able to see the
following output:

9/18/09 12:23:47 PM .com.jetbrains.intellij[1606]
java.lang.NullPointerException 9/18/09 12:23:47 PM
.com.jetbrains.intellij[1606]  at
org.jetbrains.plugins.scala.compiler.ScalacBackendCompiler$1.processMe
ssageLine(ScalacBackendCompiler.java:205) 9/18/09 12:23:47 PM
.com.jetbrains.intellij[1606]  at
com.intellij.compiler.impl.javaCompiler.CompilerParsingThread.run(Comp
ilerParsingThread.java:30) 9/18/09 12:23:47 PM
.com.jetbrains.intellij[1606]  at
com.intellij.openapi.application.impl.ApplicationImpl$5.run(Applicatio
nImpl.java:10) 9/18/09 12:23:47 PM
.com.jetbrains.intellij[1606]  at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:417
) 9/18/09 12:23:47 PM .com.jetbrains.intellij[1606]  at
java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:269)
9/18/09 12:23:47 PM .com.jetbrains.intellij[1606]  at
java.util.concurrent.FutureTask.run(FutureTask.java:123) 9/18/09
12:23:47 PM .com.jetbrains.intellij[1606]  at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecu
tor.java:651) 9/18/09 12:23:47 PM
.com.jetbrains.intellij[1606]  at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.
java:676) 9/18/09 12:23:47 PM
.com.jetbrains.intellij[1606]  at
java.lang.Thread.run(Thread.java:613) 9/18/09 12:23:47 PM
.com.jetbrains.intellij[1606]  at
com.intellij.openapi.application.impl.ApplicationImpl$1$1.run(Applicat
ionImpl.java:10)

With sadness, I will have to give up on Scala again until someone can
help me past this.

Dean

---
Original message URL:
http://www.jetbrains.net/devnet/message/5245500#5245500

--
Dmitry Jemerov
Development Lead
JetBrains, Inc.
http://www.jetbrains.com/
"Develop with Pleasure!"


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