IntelliJ IDEA 13 Scala插件和Eclipse Kepler编译错误

Question

Code :

import com.google.common.base.Joiner
import scala.collection.JavaConverters._

object MainJ extends App {
   val fantasyGeneres = Array("Space Opera", "Horror", "Magic realism", "Religion")
   val joined = Joiner.on(',').join(fantasyGeneres.toIterable.asJava)
println(joined)
}

IntelliJ IDEA Error :

scala: error while loading Joiner, class file 'C:\guava-    15.0.jar(com/google/common/base/Joiner.class)' is broken
(class java.lang.RuntimeException/bad constant pool tag 9 at byte 10)

Scala Plugin Version :

Scala -> 0.26.318
Version: 0.26.318
Date: 2013-12-04 10:46
Since: 133.124
Until: 134.0
Size: 25346.32 Kb

Eclipse Error :

Description Resource    Path    Location    Type
error while loading Joiner, class file 'C:\guava-15.0.jar(com/google/common/base/Joiner.class)' is broken (class java.lang.RuntimeException/bad constant pool tag 9 at byte 10) Scala       Unknown Scala Problem

please see above images, I wrote a program with Guava library and scala language

WHEN I use Eclipse IDE with Scala Plugin & IntelliJ IDEA with Scala Plugin above error shows and I cant compile it

Can anyone help me ?

Answer 1

This is not a fault of IDE. In fact it is how Scala compiler works. Unlike Java compiler, Scala compiler needs all the annotations for all libraries directly used by your code. Guava depends on JSR-305 annotations, so you must include corresponding JAR into your build.

See here and here for more information. This is Maven dependency descriptor, copied from here :

<dependency>
    <groupId>com.google.code.findbugs</groupId>
    <artifactId>jsr305</artifactId>
    <version>2.0.2</version>
</dependency>