What happens when you call Hashmap.put() and Hashmap.get() method in Java ?
What happens when you call Hashmap.put() and Hashmap.get() method in Java ? HashMap: HashMap is a HashTable based implementation of Map interface. This implementation gives you some basic operations like get and put methods. Put and get methods are
How to access private constructor’s or private methods in Java ?
We all know we cannot access a private constructor outside the class . So in singleton design pattern also object is created once, by private constructor i.e, once invocation and is called or used by its public static getter method.
How to create a Form Panel in Exjts 4.2 MVC ?
How to create a Form Panel in extjs 4.2 MVC ? In this post we will discuss about how to create a Form Panel in extjs 4.2 MVC. Pre Requisites: 1) Sencha Extjs 4.2 SDK. 2) Apache Tomcat Server. 3)
What is @@sqlstatus in sysbase and what does it do ?
Before explaning about @@sqlstatus lets have a breif introduction about Sybase Global Variables <h3> Global Variables </h3> Global variables are system-defined variables updated by Adaptive Server while the system is running. Some global variables are session-specific, while others are
Alternatives for Singleton Class in Java
Alternate to Singleton class in Java: As we have seen problems with singleton class. So in this post we will discuss about the alternatives of the singleton class. 1) Using dependency injection to avoid singleton’s : For any application testing
sencha Extjs component model
Extjs Component Model. An Extjs application UI is made up of one or many components. All componets are subclasses of Ext.Component . Once you create a componet it will automatically participate in automated lifecycle management which includes different
Sencha Extjs MVC Tutorial – 3 ( Extjs Data Package)
Sencha Extjs MVC Tutorial -2 In this post we will discuss about following things. 1) Insight of Data package. 2) Store 3) Model 4) Proxies 5) Some sample code. Insight of Data Package : In Extjs MVC one of
Sencha Extjs MVC Tutorial – 2 (Why we need MVC ? )
Sencha Exjts Tutorial -2 In this post we will look into following points. Insight to MVC architecture Component Query Viewport MVC demo app If you don’t know what is MVC please refer to Extjs 4.x documentation . Why we need
Problems with Singleton Class
Problems with Singleton class :- Though Singleton may seem like a good approach from the start, it usually always leads to poor design and hard to maintain code down the line. In this post lets discuss
SingleTon class Part-2
Different ways of implementing Singleton class in java :- In the previous post we have seen what is singleton class which is commonly know as Eager loading of singleton , purpose and one example of implementing singleton class in
