What are Scala standard exceptions?

16.1k Views Asked by At

What are the common standard exceptions in Scala? I am especially interested in how is .Net's NotImplementedException equivalent called?

UPDATE: The answer about the NotImplementedException seems to be org.apache.commons.lang.NotImplementedException

3

There are 3 best solutions below

1
On BEST ANSWER

Almost nothing:

package scala {
  final class MatchError(obj: Any) extends RuntimeException
  final class UninitializedError extends RuntimeException("uninitialized value")
  final case class UninitializedFieldError (msg: String) extends RuntimeException(msg)

  package util.regex {
    class SyntaxError(e: String) extends RuntimeException(e)
  }

  package xml {

    class BrokenException() extends java.lang.Exception
    case class MalformedAttributeException(msg: String) extends RuntimeException(msg)

    package dtd {
      case class ValidationException(e: String) extends Exception(e)
    }

    package include {
      class CircularIncludeException(message: String) extends XIncludeException
      class UnavailableResourceException(message: String) extends XIncludeException(message)
      class XIncludeException(message: String) extends Exception(message)
    }

    package parsing {
      case class FatalError(msg: String) extends java.lang.RuntimeException(msg)
    }
  }
}

The rest comes from Java, which cover pretty much all corners. It begs the question of what these Scala methods throw on other platforms, doesn't it?

0
On

You can just use whatever default already exists in Java. Scala doesn't really add anything to the standard exceptions in Java.

3
On

The NotImplementedException is currently being considered for Scala 2.10, probably. See this thread.