excption via custom control

scala> import scala.util.control.Exception._
import scala.util.control.Exception._
scala> val numberFormat = catching(classOf[NumberFormatException])
numberFormat: util.control.Exception.Catch[Nothing] = Catch(java.lang.NumberFormatException)
scala> val result = numberFormat opt { "10".toInt }               
result: Option[Int] = Some(10)
scala> result match {
     | case Some(n) => // do something
     | case None => // handle this situation
     |

scala> def catching[T](exceptions: Class[_]*)(body: => T) = {
     | try {                                                 
     | Some (body)                                           
     | } catch {
     | case e if (exceptions contains e.getClass) => None
     | }                
     | }
catching: [T](exceptions: Class[_]*)(body: => T)Option[T]

1. scala> runtime { "".toInt }                                                                          
2. res2: Option[java.lang.Number] = None
4. scala> runtime { "10".toInt }
5. res3: Option[java.lang.Number] = Some(10)
7. scala> runtime { throw new NullPointerException }
8. res6: Option[java.lang.Number] = None
10. scala> runtime { throw new RuntimeException }
11. java.lang.RuntimeException
12.         at $anonfun$1.apply(< console>:10)
13.         at $anonfun$1.apply(< console>:10)
14.         at .catching(< console>:9)
15.         at $anonfun$1.apply(< console>:8)
16.         at $anonfun$1.apply(< console>:8)
17.         at .< init>(< console>:10)
18.         at .< clinit>(< console>)
19.         at RequestResult$.< init>(< console>:4)
20.         at RequestResult$.< clinit>(< console>)
21.         at RequestResult$result(< console>)
22.         ...