Forem: Suma Sree

Learn about Web,Website,WebApplication.

Suma Sree — Wed, 15 Oct 2025 17:48:54 +0000

Web:Web is a portion of internet with restricted access.Tim Berners Lee introduced the concept of web.W3C(World Wide Web) maintain the standards of web.The latest version of web is web-3.
Website:Website is a virtual directory on web server.It provide access to the resources of server.Website comprises only static resources.
WebApplication:WebApplication comprises of both static and dynamic resources.

What is the use of Live Server?

Suma Sree — Tue, 14 Oct 2025 16:56:52 +0000

It is used to host your web application.
It runs the web application locally.
You can test and deploy locally using live server.

What is Package Manager?

Suma Sree — Tue, 14 Oct 2025 16:51:58 +0000

Package Manager is a software tool used to install,update,uninstall any library required for software.
There are various package Manager softwares.
a)NPM(Node Package Manager)
b)NuGet
c)RubyGEMS
d)Composer
e)Bower etc.

Let Us Learn Identifiers In Java.

Suma Sree — Tue, 14 Oct 2025 16:00:20 +0000

A name of a programming element technically called as Identifier.
It can be class name,variable name,method name.
class _Example_{ int _student_=10; void _m1()_{ } }

Identifier is used for identifying programming element from other parts of the program or project.
Note:We can't create class or variable or Method without name which leads to compile time error:Identifier expected.
Rules in creating Identifier:
We have 7 rules in creating an identifier
1.Identifiers can contain letters[A-Z,a-z],digits[0-9],special characters only[$,].
2.Identifiers can't start with digits but it can be used from second position onwards.
3.Identifiers can't contain special characters except $,.
4.Identifiers can't have space in the middle of characters.
5.In Java Identifiers are case sensitive(a!=A).
6.Reserve Words and Keywords can't be used as Identifiers.
7.From java 9 onwords single underscore'_' can not be used as Identifier because it is a keyword.
Note:We can use predefine class name,method name,variable name as user defined identifier and also there is no limit in the length of Identifier.