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 More »

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 More »

 

What happens when you call Hashmap.put() and Hashmap.get() method in Java ?

Howhashmapworksinjava

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 ?

java-logo-370x229

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 ?

Learning Extjs

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 ?

stacktrace-sybase

  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

Singleton

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

Learning Extjs

  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)

Learning Extjs

  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 ? )

Learning Extjs

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

Singleton

  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

Singleton

    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