Scala Try Catch Finally:

在Java中返回值優先級順序：finally最高， try，catch 選其一，try中拋異常，返回catch，不拋異常，返回try，。

public class ExceptionDemo {

    public static void main(String[] args) {
        System.out.println(callMD());

    }

    public static int callMD() {
        try {
//            throw new Exception();
 

            return 1;
        } catch (Exception e) {
            return 2;
        } finally {
            return 3;
        }
    }

}

Scala模仿Java:

object ExceptionCatchDemo extends App {

  def testTryCatchFinally: Int = {
    try { throw new Exception();} catch { case _ => return 2 } finally { return 3 }
  }


  println(testTryCatchFinally)
}

運行結果：3

在Scala中返回值優先級順序：try，catch 選其一，try中拋異常，返回catch，不拋異常，返回try，finally最低

object ExceptionCatchDemo extends App {

  def testTryCatchFinally: Int = {
    try { throw new Exception() } catch { case _ => 2 } finally { 3 }
  }

  println(testTryCatchFinally)


}

運行結果：2

Scala Try Catch Finally