Scala example source code file (except.scala)

This example Scala source code file (except.scala) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Scala tags/keywords

array, console, exception, exceptions, hi, hi, hiexception, hiexception, int, int, lo, lo, loexception, we

The Scala except.scala source code

/* The Computer Language Shootout 
   http://shootout.alioth.debian.org/
   contributed by Isaac Gouy (Scala novice)
*/

object except {

   var Lo = 0;
   var Hi = 0;

   def main(args: Array[String]) = {
      val n = toPositiveInt(args);

      for (val i <- Iterator.range(0,n)) 
         someFunction(i);

      Console print("Exceptions: HI=" + Hi);
      Console println(" / LO=" + Lo);
   }


   def blowup(n: Int) = {
      if ((n % 2) == 0)
         throw new LoException();
      else 
         throw new HiException();   }


   def loFunction(n: Int) = {
      try { blowup(n); } 
      catch { case _: LoException => Lo = Lo + 1; }
   }


   def hiFunction(n: Int) = {
      try { loFunction(n); } 
      catch { case _: HiException => Hi = Hi + 1; }
   }


   def someFunction(n: Int) = {
      try { hiFunction(n); } 
      catch { case e: Exception =>  
         Console println("We shouldn't get here: " + e);
      }
   }


   def toPositiveInt(s: Array[String]) = {
      val i = 
         try { Integer.parseInt(s(0)); } 
         catch { case _ => 1 }
      if (i>0) i; else 1;
   }

}

private class LoException extends Exception {}
private class HiException extends Exception {}