What is NullPointerException in Java how to deal

Top Tutorials

New Tutorials

Submit

Login

Register

Tutorial Detail

• Total Hits: 6332

• Average Rating :
  

•  

• Total Votes: 42 votes

• Category: JAVA/Core JAVA

• Submitted on: 2012-09-22 08:32:16

• Submitted By: Javin Paul

• Set as Favorite

Description:

Java.lang.NullPointerException comes when we try to access any field or method on Object which is null. Its come mainly due to programming mistake and breaking of contract between different part of application but there are few cases where you can avoid NullPointerException in Java by carefully coding like instead of object.equals("apple) you can call "apple".equals(object) which will not throw NullPointerException.    More detail...

Rating Detail

Stars	Percentage	Total Vote
	9.52%	4
	9.52%	4
	30.95%	13
	16.67%	7
	23.81%	10

Caste Your Vote

Rating	Selection	Guidelines
Poor:		Very disappointing, useless.
Fair:		Below average, disappointing but not useless.
Good:		About average in its class.
Very Good:		Above average for its category.
Excellent:		One of the best Tutorials in its category.

---