NullPointerException

packageorg.training.exceptions;

public class NullPointer {

      public static void main(String[] args) {

           

            new NullPointer();

      }

     

      public NullPointer(){

     

            Object[] object = {12,25,68,45};

           

            try {

                    for (Object o : object ) {

                          System.out.println(o);

                    }

                    // explicitly dereferencing object array

                    object = null;

                   

                    for (Object o : object ) {

                          System.out.println(o);

                    }

                   

            }catch(NullPointerException nfe) {

                  nfe.printStackTrace();

            }

    }

}

Output:

12

25

68

45

java.lang.NullPointerException

      at org.training.exceptions.NullPointer.<init>(NullPointer.java:21)

      at org.training.exceptions.NullPointer.main(NullPointer.java:7)