Explain about MVC 1 & MVC 2. what is the difference between MVC 1 & MVC 2?
Latest Answer: actually MVC 1 is a misnomer. is also called Model 1 architecture, this refersto the ancient archetecture :) wer ppl had vereything stuffed into servlet ( view and business logic related code ) and a simple java bean did the job of talking to DB and persisting ...
1. Some websites will have hierarchical display of items. (For eg, on click of a ‘+’ symbol, all items under this item gets listed.). How do you store such structure in database (Note: You can store as XML object. But how do you store in database tables without using XML) ?2. explain 3GL ?
Latest Answer: Two Phase protocol : http://en.wikipedia.org/wiki/Two-phase_commitThree Phase protocol : http://en.wikipedia.org/wiki/Three-phase_commit_protocol ...
What is the difference between session entity and message driven beans ? why beans concept is required?
Latest Answer: Session Bean :- Used to encapsulate the business dataEntity bean :- Represents the shared business dataMessage driven Bean:- Used for Asynchronus Communication ...
Latest Answer: to check wheather it is SLSB/SFSB u can see dd(deployment descriptor).This is the only place where container checks for it. ...
Latest Answer: hi A J2EE application is packaged as a portable deployment unit called an enterprise archive (EAR) file. An EAR file is standard JAR file with a .ear extension. An EAR file contains:One ...
What is the need of JNDI(Java Naming and Directory Interface) ? Explain with real-time usage ?
Latest Answer: Hi Friends ,The main advantage of JNDI(java naming and directory interface) is used for the searching the information in the huge amount data. if we have huge amount of data, for searching we use JNDI API instead of JDBC API then it increases ...
Latest Answer: Thin client is browser based and thick client is window based ...
Latest Answer: Hi Friends,JavaBeans may be visible or nonvisibleat runtime. For example, the visual GUI component may be a button, list box, graphic, or a chart An EJB is a nonvisual, remote objectJava Beans are intended to be local to a single process and are ...
Latest Answer: Boolean Logical Operators - & (Logical AND), | (Logical Inclusive OR), ^ (Logical Exclusive OR ) :Boolean Logical Operators can be applied to Boolean Operands returning a Boolean Value. It can also be applied to integral operands to perform ...
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