多層的異常捕獲

CatchWho.Java

源代碼：

public class CatchWho { 

    public static void main(String[] args) { 

        try { 

            try { 

                throw new ArrayIndexOutOfBoundsException(); //要處理的問題

             } 

            catch(ArrayIndexOutOfBoundsException e) { 

               System.out.println("ArrayIndexOutOfBoundsException"+  "/內層try-catch"); 

            } 

            throw new ArithmeticException(); 

        } 

        catch(ArithmeticException e) { 

            System.out.println("發生ArithmeticException"); 

        } 

        catch(ArrayIndexOutOfBoundsException e) { System.out.println("ArrayIndexOutOfBoundsException" + "/外層try-catch"); 

        } 

    } 

}

預測程序運行結果：ArrayIndexOutOfBoundsException/外層try-catch

                     發生ArithmeticException

                     ArrayIndexOutOfBoundsException/外層try-catch

實際運行結果截圖：

 

源代碼：

public class CatchWho2 { 

    public static void main(String[] args) { 

        try {

            try { 

                throw new ArrayIndexOutOfBoundsException(); 

            } 

            catch(ArithmeticException e) { 

                System.out.println( "ArrayIndexOutOfBoundsException" + "/內層try-catch"); 

            }

            throw new ArithmeticException(); 

        } 

        catch(ArithmeticException e) { 

            System.out.println("發生ArithmeticException"); 

        } 

        catch(ArrayIndexOutOfBoundsException e) { 

            System.out.println( "ArrayIndexOutOfBoundsException" + "/外層try-catch"); 

        } 

    } 

}

預測程序運行結果：ArrayIndexOutOfBoundsException/內層try-catch

               發生ArithmeticException

                  ArrayIndexOutOfBoundsException/外層try-catch

 

實際運行結果截圖：