Scala Try Catch Finally

Posted 2020-10-22 AK47Sonic

Scala Try Catch Finally:

在Java中返回值优先级顺序：finally最高， try，catch 选其一，try中抛异常，返回catch，不抛异常，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)
}

运行结果：3

在Scala中返回值优先级顺序：try，catch 选其一，try中抛异常，返回catch，不抛异常，返回try，finally最低

object ExceptionCatchDemo extends App {

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

  println(testTryCatchFinally)


}

运行结果：2