java networking tutorial

Bodhak java networking tutorial in this chapter we are going to learn the programming of networking using Java. The topics are covered with syntax and programming examples.

A network consists of two or more computers that are linked in order to share resources, exchange files, or allow electronic communications. The computers in a network are linked through cables, telephone lines, radio waves, satellites, or infrared light beams.

 

 

java networking tutorial

What is IP address?

An Internet Protocol address (IP address) is a numerical label assigned to each device (e.g., computer, printer) participating in a computer network that uses the internet protocol for communication.

Logically similar to the traditional mailing address

An address uniquely identifies a particular object

Each computer connected to the Internet has a unique IP address

A 32-bit number used to uniquely identify each computer connected to the Internet Ex: 127.0.0.1  (or) 192.1.1.1

what are protocols?

Definition: Set of rules and standards that define a certain type of Internet communication

Different types of communication occurring over the Internet

Each type of communication requires a specific and unique protocol

Some important protocols used over the Internet

Hypertext Transfer Protocol (HTTP): Used to transfer HTML documents on the Web

File Transfer Protocol (FTP): More general compared to HTTP

Allows you to transfer binary files over the Internet

Both protocols have their own set of rules and

standards on how data is transferred

Java provides support for both protocols

Protocols only make sense when used in the context of a service

HTTP protocol is used when you are providing Web content through an HTTP service

Each computer on the Internet can provide a variety of services

Each Application run within system identified by unique number known as port number

The type of service must be known before information can be transferred

Definition: A 16-bit number that identifies each service offered by a network server

Using a particular service to establish a line of communication through a specific protocol

Need to connect to the appropriate port