October 2012 3
Java : Null Pointer Exception
What is a Null Pointer Exception? Thrown when an application attempts to use null in a case where an object is required. These are the common scenarios where one can confront with a null pointer exception:- Obtaining the length of such object as an array which is null. Invoking an instance method of a object […]
Web Page Performance
Why web Page Performance?In the present time of IT industries business, performance of a particular application is so much important. As performance is directly proportional to the number of user using that application.Main factors affecting web page performance:- Blocking JavaScript. No of http Calls What is Blocking JavaScript? For Every Browser we have a rendering […]
Garbage Collection in java
What is garbage? In oop programming when an object is not referred in a program at present or in future that object is called garbage. What is garbage collection? The process of Collecting all the memories occupied by these garbage objects are called garbage collection. Generally this process happens in two steps:- […]