What is the servletcontext listener and what is
JspContext and page context pls tell in simple words.

Answer Posted / sreekumar

ServletContextListener is an interface which contains two
methods to be implemented namely contextInitialized and
contextDestroyed which will be called when context is
initialized and destroyed respectively. Both the methods
accepts ServletContextEvent as argument

PageContext is an implicit object which encapsulates other
implicit objects. ie. using pagecontext reference we can get
references to all other implicit objects and attributes from
all scopes

JspContext serves as the base class for the PageContext class

Is This Answer Correct ?    1 Yes 1 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

Which server-side script takes the input from JavaScript, can access the database if it needs to, and processes the data.

1799


What are the types of the main implementing classes in the map interfaces? : java collections

822


What are the considerations to be made in case of loops in java ?

768


What are the types of java collections? : java collections

721


What is deque in the java collections framework? : java collections

715






What are the different types of classes implemented in the set interfaces? : java collections

808


How do I find jre path in windows?

712


Hi Friends , am newbie to ajax. For example just consider one account registration - A form contains 8 text fields with submit button. In this form second texbox contains "username " . On right side of text box there is a label box . On clilck action i need to determine user is available or not. Is it possible on clicking label or should i click submit button.

1785


What are the uses of the set interfaces in the java collections? : java collections

741


what is mean by hasing and maping in java platform and advantage?

2066


What are the different types of collections views being provided by the map interface? : java collections

779


What is the use of hashcode in java ?

777


What is Generic in java? Where can we write Generic ( class or method or objects or etc...)? with simple example? Thanks, Bose. Infosys 2 In which way does a Primitive data type is passed ? Sun- Microsystems 4 what is the use of declaring constructor as private? Sai- Softech 5 what is difference between global methods and local methods? 1 What is meant by class loader and how many types are there? Apple 1 what is meaning of JIT? 4 What is an abstract class? Wipro 5 what is filters and its use? Virtusa 2 why is multiple inheritance not allowed in java? Elementus-Technologies 7 Differences between jdk 1.4 and 1.5 Wipro 4 is JVM platform dependent or independent..? IBM 6 what is main purpose of abstract class? 5 what is difference between colection and collections? Tech-Mahindra 11 What error occurs if a try-catch-finally statement sequence does not have a catch clause? 2 Explain the difference between scrollbar and scrollpane? 1 Explain the differences between public, private, protected and static? 4 Explain the difference between getAppletInfo and getParameterInfo? 1 Is Cegonsoft Pvt.Ltd. a good Institute? 4 Why only one Class is public in one file? Explain in details. Thanks in Advance. 11 Which method will get invoked first in a stand alone application?

2535


who will give req's to u?. how they send req's to u? . what design documents contains?. when bugs raised on other developer code how to report to them?.(throgh mail or ........). how to retrive 100 recods from dao layer to presentation layer.using which collection?. what is sequence diagram.?.

2030


What are the different types of ways where you can iterate over a list? : java collections

740