crash.rb

require 'java'
java_import "foo.Crash"

c = Crash.new
c.foo

Crash.scala

package foo
class Crash {

  def foo =
    try
      err
    catch {
      case e:Exception =>
        e.printStackTrace
    }

  def err = error("ouch")
}

stacktrace.txt

java.lang.RuntimeException: ouch
	at scala.sys.package$.error(package.scala:27)
	at scala.Predef$.error(Predef.scala:66)
	at foo.Crash.err(Crash.scala:13)
	at foo.Crash.foo(Crash.scala:6)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:601)
	at org.jruby.javasupport.JavaMethod.invokeDirectWithExceptionHandling(JavaMethod.java:508)
	at org.jruby.javasupport.JavaMethod.invokeDirect(JavaMethod.java:368)
	at org.jruby.java.invokers.InstanceMethodInvoker.call(InstanceMethodInvoker.java:50)
	at org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:292)
	at org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:135)
	at crash.__file__(crash.rb:5)
	at crash.load(crash.rb)
	at org.jruby.Ruby.runScript(Ruby.java:697)
	at org.jruby.Ruby.runScript(Ruby.java:690)
	at org.jruby.Ruby.runNormally(Ruby.java:597)
	at org.jruby.Ruby.runFromMain(Ruby.java:446)
	at org.jruby.Main.doRunFromMain(Main.java:369)
	at org.jruby.Main.internalRun(Main.java:258)
	at org.jruby.Main.run(Main.java:224)
	at org.jruby.Main.run(Main.java:208)
	at org.jruby.Main.main(Main.java:188