null pointer

Home Answers Viewqa Java-Beginners null pointer

QuestionAsk Questions?

Srinivasan

null pointer
1 Answer(s) a year and 11 months ago
Posted in : Java Beginners

dear sir ,

what is mean by null pointer in c ?

View Answers

June 13, 2011 at 5:30 PM

Literal meaning of NULL pointer is a pointer which is pointing to nothing. NULL pointer points the base address of segment.

Examples of NULL pointer:

int *ptr=(char *)0;
float *ptr=(float *)0;
char *ptr=(char *)0;
double *ptr=(double *)0;
char *ptr=?\0?;
int *ptr=NULL;

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

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

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 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

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

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

null pointer exceptions
null pointer exceptions import java.util.*; public class employee { static int ch; static int emp[]; String name; int id,age; float sal; void insert() { employee[] emp=new employee[90]; Scanner r

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

Null Pointer Exception - Java Beginners
Null Pointer Exception How Can I Handle NullPoiniterException without using try/catch mechanism

Null pointer exception in hibernate - Hibernate
Null pointer exception in hibernate Hi i am getting null pointer exception.while running the program in hibernate... is compiled successfully but while running the program i am getting null ponter

Java null pointer exception handling
Java null pointer exception handling What... of modifying null value or obtaing a null value in an arrray. To handle null pointer... program? Is this extends from exception class of Java? Java 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

Null Pointer Exception
Null Pointer Exception Null pointer exceptions are the most common run time .... Normally, the latter one is more common. Rule for Debugging Null Pointer

Why the null Pointer exception is comming? - Java Beginners
Why the null Pointer exception is comming? My code is given below...")); String []oldOne = null; String[]newOne; int i = 0...}; String line; String line1; String[] tokens = null

Null pointer exception error in Jsp - JSP-Servlet
Null pointer exception error in Jsp Hi i write a login page. when i validate the login value then the nullpointer exception error is occured. my..." attributes in the input tag So id,userpwd gives null pointer exception

Null pointer exception error in Jsp - JSP-Servlet
Null pointer exception error in Jsp Expert:Majid Hi i write a login page. when i validate the login value then the nullpointer exception error..." attributes in the input tag So id,userpwd gives null pointer exception. Thanks

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

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

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

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

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

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

Null pointer exceptation-Java Servlet web application,Problem connecting with MYSQL database
Null pointer exceptation-Java Servlet web application,Problem connecting... { private static ConnectionPool pool = null; private static DataSource dataSource = null; private ConnectionPool

how to move pointer in Textfield to newline
how to move pointer in Textfield to newline consider my case...); add(l4); add(tf1); add(tf2); add(tf3); setSize(400,600); setLayout(null...); setLayout(null); setVisible(true

Pointer a variable
Pointer a variable hii, Pointer is a variable or not ? hello, Yes, a pointer is a variable

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

pointer to a reference
pointer to a reference pointer to a reference in C++ #include <iostream> using namespace std; void foo1(int& x) { int* p = &x; *p = 123; } void foo2(int* x) { int

Function pointer in c
Function pointer in c What is the difference between function call with function pointer and without function pointer(normal function call

c-language pointer functions
c-language pointer functions what is the execution process of character pointer functions with example

Null value when i set interface object in form controller - Spring
got NULL pointer exception ... please guide me if any one know ...it is very...Null value when i set interface object in form controller Hi all, i am very new about spring and hibernate. i got null value when i set

incomplete pointer type NSMutableDictionary
incomplete pointer type NSMutableDictionary My iphone app is throwing the "incomplete pointer type NSMutableDictionary" issue on running the iphone app. What is this issue and how can i remove it. NSMutableDictionary *dict

Pointer in java - JSP-Servlet
Pointer in java Hello ! All i know that java has no pointer type facility. but i have a problem to related pointer. Actually m using a dll and in that dll there is function that rec add of byte type variables address

java.lang.NumberFormatException: null
java.lang.NumberFormatException: null I get org.apache.jasper.JasperException: java.lang.NumberFormatException: null exception when i submit the form plz help me regarding

null interface
null interface what is the null interface and what is the use of it in real java project ? Hi Friend, A null interface is an interface without any methods.Is also known as Marker interface. Null interfaces are used

C Structure Pointer
C Structure Pointer This section illustrates you the concept of Structure Pointer in C. You... through structure pointer. For that, we declare the structure type st consisting

Pointer Example
Pointer Example ... are trying to create a pointer which location is based on the screen touch pointer. The source code for this small example of touch screen application

Pointer in C
About Pointer A pointer is a variable which contain the memory address...; used when dealing with pointer. 1 & ... operator 3 -> structure pointer

What is a pointer and does Java support pointers?
What is a pointer and does Java support pointers? Hi, What is a pointer and does Java support pointers? Thanks Hi, Pointer.... for more related to [Java Pointer][1] [1]http://www.roseindia.net

javascript null mean
javascript null mean What does javascript null mean

disallow NULL values in a table.
disallow NULL values in a table. How do I disallow NULL values in a table

array_merge null - PHP
array_merge null i am using the array_merge and getting the unusual null error...any help

What is NOT NULL Constraint?
What is NOT NULL Constraint? What is NOT NULL Constraint? Hi, The NOT NULL constraint enforces a column to NOT accept NULL values.The NOT NULL constraint enforces a field to always contain a value. This means

if variable is null php
if variable is null php How to check if submitted variable is null in PHP? Thanks! Check if Variable is NULL in PHP You can use isset($var) to check if the variable is not defined or null in PHP. and after setting

comparison with null - Framework
comparison with null String value = txtfld.getText(); if (value == null) ----- failing step----control goes to else part { // some code... friend, if (value == null) works properly for comparision For any more

Ask Questions?

If you are facing any programming issue, such as compilation errors or not able to find the code you are looking for.

Ask your questions, our development team will try to give answers to your questions.

Tutorial Topics