null pointer exception in java

What is null pointer exception in Java and when it occurs? Show it with an example.
Thanks!

View Answers

November 8, 2011 at 11:54 AM

Ads

Advertisements

Java null pointer exception
Java null pointer exception Hi I've made an array of Book objects that I made, the array is called library and it can hold 100 books, but currently...]!=null){ if(strfield.contains(param)){ result+=library[counter

Java null pointer exception handling
Java null pointer exception handling What... program? Is this extends from exception class of Java? Java null pointer exception handling What is Java NullPointerException? In Java

Null Pointer Exception
Null Pointer Exception whis is the Null Pointer Exception in java? or define Null Pointer Exception with exp? NullPointerException occurs, when you try to implement an application without referencing the object

Httpservletresponse null pointer exception.
Httpservletresponse null pointer exception. What is Httpservletresponse null pointer exception? NullPointerException occurs when we try to implement an application without referencing the object and allocating

NULL POINTER EXCEPTION
NULL POINTER EXCEPTION What is the Root cause for Class caste exception in struts frame work .and how 2 handle that 1 please help me

null pointer exception in jsp
null pointer exception in jsp index.html <html> <...(Exception e) { System.out.println(e); } } %>...); } } catch(Exception e) { out.println(e); } %>

NUll POINTER EXCEPTION
of code i m getting null pointer Exception. can some one please explain what...NUll POINTER EXCEPTION public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException

when do we get null pointer exception in java
when do we get null pointer exception in java can anybody explain me abt null pointer exception? like in wt situation do v get NPE? Are these 2 strings same? String str; String str=null

null pointer exception cannot be removed
null pointer exception cannot be removed class list { public... Exception nothing; public int r; public list() { this(null,null,0); } public list(String e,int i) { this.elem = e; this.next = null

Getting Null pointer Exception in the jsp page
Getting Null pointer Exception in the jsp page I have developed this jsp page to store the data in database.While storing the value of check box in database I am getting null pointer exception in the following code

check null exception java
check null exception java check null exception java - How to check the null exception on Java? The null pointer exception in java occurs... on it. See the example null pointer exception

Handle Null Pointer Exception while text file upload
Handle Null Pointer Exception while text file upload I want the code for handling null pointer exception in jsp page. That is I need an error page for null pointer exception. The cause for null pointer exception is while

null pointer
null pointer dear sir , what is mean by null pointer in c

Null pointer execption
Null pointer execption what is null pointer exception. I am getting the null pointer exception in this line conn= com.mypay.dao.Connection.getConnection(); what is wrong

Clicking F5 and reentering value throws Null pointer exception
Clicking F5 and reentering value throws Null pointer exception Hi, My page performs search operation.Normally when i enter a value and click... refresh my page and enter any value it is throwing Null pointer exception.can

null pointer exceptions
null pointer exceptions import java.util.*; public class employee { static int ch; static int emp[]; String name; int id,age..."); } } } Exception in thread "main" java.lang.NullPointerException at employee.insert

null pointer error
null pointer error Respected sir there is a problem in this code when i add any new record in ms access data base from my code, it gives only null pointer error sir please help me my code are given below compilatation class

pointer error java
pointer error java How to catch null pointer errors in java if the if(value != null) or null

Null pointer exceptation-Java Servlet web application,Problem connecting with MYSQL database
Null pointer exceptation-Java Servlet web application,Problem connecting.... T_T I have develop my java web application in window Environment and now i.... T_T I have develop my java web application in window Environment and now i

is there is pointer in java or not??
is there is pointer in java or not?? is there is pointer in java or not plz tell me this with brief?? thank you

Refresh Button returns null point exception when clicked
Refresh Button returns null point exception when clicked Dear all... button in java. When clicking the button it returns an error "null point exception" Thanks

pointer
pointer CONSTRTUCT A STRUCTURE FOR EMPLOYEE RECORD THAT CONTAINS A PERSON'S NAME, AGE, EMPLOYEE AND SALARY.WRITE A STATEMENT THAT DECLARES A VARIABLE empInfo and a pointer emPtr of type EMPLOYEE.then use the pointer to display

Exception Java
Exception Java Hi, What are the Exception Java? Thanks Hi, Read it at Java Exception. Thanks

List of Java Exception
with the data type of that array Null Pointer Exception These Exception... List of Java Exception Exception in Java are classified on the basis of

Ads