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• SQL: OR Command
  on Mar 17, 2013 in SQL TUTORIAL SQL INTERVIEW QUESTIONS SQL
  In SQL, we have seen the use of AND command, to set multiple condition when performing a database transaction. But when we use AND, that means it's a mandatory condition. The transaction will provide output, only when all the conditions will be satis...
• SQL: AND Command
  on Feb 28, 2013 in SQL TUTORIAL SQL INTERVIEW QUESTIONS SQL
  In SQL, we have, seen that, we can add conditions by using WHERE command, during any SELECT, UPDATE or DELETE operation. Now, what about multiple conditions? For that, SQL provides to add multiple condition by using AND command. it can be used a...
• SQL: WHERE Command
  on Feb 22, 2013
  In SQL,when ever you want to SELECT some data, or UPDATE or DELETE some information from a Table, you needs to provide some condition, on basis of which operation will be performed. It's not necessary to SELECT, UPDATE or DELETE all data from a table...
• SQL: SELECT Command
  on Feb 17, 2013 in SQL TUTORIAL SQL INTERVIEW QUESTIONS SQL
  SELECT command is use in SQL to "SELECT [some info] FROM [a location]".  Now, this is the basic structure of the SELECT query, where SELECT and FROM are 2 commands of SQL. Here, [some info] part will be the column names separated by comma (,) si...
• JAVA: Parse String to Double
  on Feb 14, 2013 in JAVA INTERVIEW QUESTIONS JAVA
  Paser String to Double:You can parse a double value in string format to double in 4 ways.Double.valueof(String s) :  This method returns a double object containing the value invoked in it in string format.It can trim white-space in start or end...
• SQL: What is SQL
  on Feb 13, 2013 in SQL TUTORIAL SQL INTERVIEW QUESTIONS SQL
    SQL (Structured Query Language) is a type of programming language, which uses to communicate with database. It’s also known as “sequel”. It provides some syntax which helps you to interact with a database. These syntaxes are very similar...
• FRAMEWORK: MVC – Model View Controller
  on Feb 10, 2013 in FRAMEWORK INTERVIEW QUESTIONS JAVA INTERVIEW QUESTIONS SPRING J2EE INTERVIEW QUESTIONS J2EE SPRING INTERVIEW QUESTIONS STRUTS FRAMEWORK JAVA STRUTS INTERVIEW QUESTIONS
  Model-View-Controller (MVC) is a popular Software Architecture pattern widely used in web applications. It separates application data from UI (user interface) by a thin controlling layer, which actually helps as a bridge between UIs and model. In thi...
• FRAMEWORK: WHAT IS FRAMEWORK? WHAT’S THE DIFFERENCE BETWEEN FRAMEWORK AND LIBRARY?
  on Jan 30, 2013 in JAVA INTERVIEW QUESTIONS STRUTS JAVA STRUTS INTERVIEW QUESTIONS
  Framework: A framework is a basic conceptual and reusable structure which provides generic functionality, used to solve or address complex issues.A software frameworkprovides basic architecture, application programming interfaces (APIs) and tools for...
• STRUTS: WHAT IS FRAMEWORK? WHAT’S THE DIFFERENCE BETWEEN FRAMEWORK AND LIBRARY?
  on Jan 28, 2013 in JAVA INTERVIEW QUESTIONS STRUTS JAVA STRUTS INTERVIEW QUESTIONS
  Framework: A framework is a basic conceptual and reusable structure which provides generic functionality, used to solve or address complex issues.A software frameworkprovides basic architecture, application programming interfaces (APIs) and tools for...
• J2EE: SERVLET: doGet() vs. doPost()
  on Jul 7, 2012
  doGet():protected void doGet(HttpServletRequest req, HttpServletResponse resp)throws ServletException, java.io.IOException – is a method of Class HttpServlet. It is called by the server (via the service method) to allow a servlet to handle a clien...
• JAVA: What is the superclass of Exception
  on Mar 5, 2012 in JAVA INTERVIEW QUESTIONS JAVA
  java.lang.Throwable is the superclass of all the errors and exceptions in java.
• JAVA: Why Errors are Unchecked?
  on Mar 5, 2012 in JAVA INTERVIEW QUESTIONS JAVA
  Error is unpredictable. It can occur at any point and recover is also quite impossible. So it is meaningless to declare such exception. That’s why, in java, error is unchecked.
• J2EE: SERVLET: Class GenericServlet vs Class HttpServlet
  on Feb 29, 2012 in J2EE INTERVIEW QUESTIONS SERVLET INTERVIEW QUESTIONS J2EE SERVLET
  Class GenericServlet :  ·                    It is an abstract class which defines a generic and protocol independent servlet. Here, protocol indepen...
• J2EE: SERVLET: What is Servlet Interface?
  on Feb 28, 2012 in J2EE INTERVIEW QUESTIONS SERVLET INTERVIEW QUESTIONS J2EE SERVLET
  Interface javax.servlet.Servlet is that interface which defines the ServletLife Cycle methods. So, all servlets must implement this interface, either directly or by extending a class which implements this interface. Instead of directly implementing t...
• J2EE: SERVLET: What is Servlet?
  on Feb 27, 2012 in J2EE INTERVIEW QUESTIONS SERVLET INTERVIEW QUESTIONS J2EE SERVLET
  Servlet:Servlet is a server-side (runs within a Web server), Java Programming Language Class which interacts with clients via request-response programming model (example, HTTP Request-Response model).It can respond to any type of request, but, genera...
• JAVA: Why can’t enum extends any other class?
  on Feb 24, 2012 in JAVA INTERVIEW QUESTIONS JAVA
  By default, all enums implicitly extend java.lang.Enum. And as we know, Java doesn't support multiple inheritance, an enum cannot extend any other class.
• J2EE: SERVLET: SERVLET API
  on Feb 19, 2012 in J2EE INTERVIEW QUESTIONS SERVLET INTERVIEW QUESTIONS J2EE SERVLET
     Java Servlet API is that Application Program Interface (API), which defines and describes the contracts between servlets and servers. That means, it contains the set of programs and standard instructions to develop a proper access betwee...
• J2EE: SERVLET: What happens to Session if the client intentionally turns off the cookies?
  on Feb 16, 2012 in J2EE INTERVIEW QUESTIONS SERVLET INTERVIEW QUESTIONS J2EE SERVLET
     If client intentionally turns off the cookies, that means, the client chooses not to join the session. In this situation, until the client turns on the cookies, getSession will return a different session on each request, and isNew will a...
• J2EE: SERVLET: Session Tracking in Servlets using Interface HttpSession
  on Feb 16, 2012 in J2EE INTERVIEW QUESTIONS SERVLET INTERVIEW QUESTIONS J2EE SERVLET
  Session tracking in Servlets is done by using Interface HttpSession. It helps to identify a client throughout many page requests or visiting a website and to store details about that client. Whenever a request arrives, it checks...
• INTERNET: HTTP vs. HTTPS
  on Feb 10, 2012 in INTERNET INTERNATE INTERVIEW QUESTIONS
   HTTP stands for HyperText Transfer Protocol, whereas, HTTPS is HyperText Transfer Protocol Secure.HTTP transmits everything as plan text, while HTTPS provides encrypted communication, so that only the recipient can decrypt and read the informat...

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