JDK 1.7 Features:----

Handling multiple exceptions in a single catch block

package govind;

public class MultipleExceptionHandleThroughSingleCatch {

           

            public static void main(String[] args) {

                       

                       

                        int x=0;

                        int y[]= {100,200,300,400,500};

                        try

                        {

                                    int c=y[5]/x;    //line 1

                                    //int c=y[4]/x;  //line 2

                        }

                        catch (ArithmeticException|ArrayIndexOutOfBoundsException e) {

                       

                        e.printStackTrace();

                                   

                        }

           

            }

}

o/p:-----------

case :-1

if line 1 is not commented and line 2 is commented then o/p:-

java.lang.ArrayIndexOutOfBoundsException: 5

            at govind.MultipleExceptionHandleThroughSingleCatch.main(MultipleExceptionHandleThroughSingleCatch.java:12)

case :-2

if line 2 is not commented and line 1 is commented then o/p:-

java.lang.ArithmeticException: / by zero

     at govind.MultipleExceptionHandleThroughSingleCatch.main(MultipleExceptionHandleThroughSingleCatch.java:13)

==========================================================================

package govind;

public class MultipleExceptionHandleThroughSingleCatchError {

           

            public static void main(String[] args) {

                       

                        try

                        {

                                    int c=10/0;

                        }

                        catch(ArithmeticException|RuntimeException e)

                        {

                        e.printStackTrace();

                                   

                        }

                       

            }

}

o/p:----------------------

compile time error:------

The exception ArithmeticException is already caught by the alternative RuntimeException

Exception in thread "main" java.lang.Error: Unresolved compilation problem:

            The exception ArithmeticException is already caught by the alternative RuntimeException

                    at govind.MultipleExceptionHandleThroughSingleCatchError.main(MultipleExceptionHandleThroughSingleCatchError.java:11)

Note:--------------

Super class exception must be caught separately (it is a constraint).

So here, in case when your are catching multiple exceptions,

follow the rule of generalized to more specialized. It means that, if you are using

super (general) class, don't use child (specialized) class.