Interview Questions

Send request to get interview tips in PDF format Personal Interview - Answers to frequently asked questions Tips to earn promotions and perks You can also get your answers published How to write a good CV? How to write a good Cover Letter? Tips to become boss's favorite CareerRide is hiring

Java Interview questions part 5

---

Part 1 | Part 2 | Part 3 | Part 4 | Part 5 <<Previous  Next>>

Question - What is preinitialization of a servlet?

Answer
The process of loading a servlet before any request comes in is called preloading or preinitializing a servlet. Normally, a container doesn't initialize the servlets as it starts up, it initializes a servlet when it receives a request for that servlet first time.

Question - What is the difference between JSP and Servlets? 

Answer
JSP supports only HTTP protocol. But a servlet can support any protocol like HTTP, FTP, SMTP etc. 

Question - What is the difference between Difference between doGet() and doPost()?

Answer
GET Method: All data we are passing to Server will be displayed in URL. Here we have size limitation.

POST Method: In this method we don’t have any size limitation. All data passed to server will be hidden; User cannot able to see this info on the browser.

Question - What's the difference between servlets and applets?  

Answer
Servlets executes on Servers while Applets executes on browser. 
Unlike applets, servlets have no graphical user interface.  

Question - What is JSP?  

Answer
JSP is a technology that returns dynamic content to the Web client using HTML, XML and JAVA elements. JSP page looks like a HTML page but is a servlet. It contains Presentation logic and business logic of a web application.  

Question - What is the purpose of setAutoCommit do?   

Answer
A connection is in auto-commit mode by default which means every SQL statement is treated as a transaction and will be automatically committed after it is executed. If you want all statements not to be committed until you call the method commit explicitly, you need to disable auto-commit mode. 

con.setAutoCommit(false);    

Part 1 | Part 2 | Part 3 | Part 4 | Part 5