try-2.scala

JAVA 语言的函数式编程扩展

/*
 * Test different variants of the try-catch block.
 *
 * $Id: try-2.scala 14389 2008-03-16 03:01:18Z mcdirmid $
 */


object Test {


  def tryAllUnit: Unit = 
    try {
      throw new Error();
    }
    catch {
      case _ => Console.println("exception happened\n");
    }

  def tryUnitAll: Unit = 
    try {
      Console.println("Nothin");
    } catch {
      case _ => error("Bad, bad, lama!");
    }

  def tryAllAll: Unit = 
    try {
      throw new Error();
    } catch {
      case _ => error("Bad, bad, lama!");
    }

  def tryUnitUnit: Unit = 
    try {
      Console.println("Nothin");
    } catch {
      case _ => Console.println("Nothin");
    }

  def tryIntUnit: Unit = 
    try {
      10;
    } catch {
      case _ => Console.println("Huh?");
    }


  def execute(f: => Unit) = try {
    f;
  } catch {
    case _ => ();
  }


  def main(args:Array[String]): Unit = {
    execute(tryAllUnit);
    execute(tryUnitAll);
    execute(tryAllAll);
    execute(tryUnitUnit); 
    execute(tryIntUnit);
 }
}