Definition of java.net Package
Java.net is a package that provides a set of classes as well as interfaces for networking in Java. Some of the classes are URL class, URLConnection class, Socket class, ServerSocket class, DatagramSocket, MulticastSocket etc. In the below sections, the different classes of the java.net package will be discussed.
Working of java.net Package
As already discussed, the java.net package is helpful in Java networking. It supports two protocols such as:
- TCP(Transmission Control Protocol): Permits reliable communication between 2 applications. It is denoted as TCP/IP.
- UDP(User Datagram Protocol): It is a connection-less protocol.
Permits data packets to transfer between applications. In order to perform several operations on these protocols, classes of java.net packages are used. It will be discussed in the next section.
Various Classes of java.net Package
The following are the classes of the javs.net package:
|Class||Description of the Class|
It is very essential to get or fetch the connection authentication for networking applications in a network. Authenticator class objects help in getting this authentication.
It is known to us that cache memory is a memory that used for fast information retrieval. CacheRequest class helps in storing the ResponseCache resources.
CacheRequest class helps in retrieving the ResponseCache resources.
Normally, a network connection is established by using URLs. ContentHandler class is the superclass of the particular classes which are chosen for reading the URL connection objects.
CookieHandler class object offers a callback mechanism to HTTP protocol handler with the HTTP state management policy implementation.
CookieManager class extends or implements the CookieHandler class i.e.
DatagramPacket class renders the datagram packet.
In a network, in order to transfer datagram packets, an entity socket is essential.
Parent class which helps in the implementation of sockets as well as a datagram.
A class that represents the network interface address.
This class does URL connection establishment to the JAR files.
Multicast IP packets transfer is done with the help of this class.
IP address-port number combination is known as IP Socket Address. InetSocketAddress class offers a similar implementation. It is declared as follows:
This class represents the IP Address.
This class represents the IP version 4 Address.
This class represents the IP version 6 Address.
Conversion of IDN between the ASCII CE and normal Unicode representation.
This class helps in getting URL connections that have HTTP features.
This class helps in representing HTTP cookies which carries state information between client-server. The class is declared as:
This class offers several network-related permissions.
This class helps in representing the network interface.
This class acts as a data holder by the authenticator.
This class helps in proxy related settings.
This class helps in proxy server selection.
This class represents the Caches that are associated with the URL connections.
This class represents the Cache that is obtained by the use of secure modes.
This class helps in server socket implementation.
This class implements the sockets that are associated with the client-side.
This class implies the Socket Address representation.
This is a class that acts as a parent class for every socket implementing classes.
This class does network access provision by using sockets.
This class provides standard socket options.
This class represents a Uniform Resource Identifier.
This class represents Uniform Resource Locator.
Loading of certain classes and resources mentioned with the search path is done using this class.
This is a class that acts as a parent class for the classes that communicate between the application & a URL.
The decoding of HTML forms are done by using this class.
The encoding of HTML forms are done by using this class.
This is a class that acts as a parent class for Stream Protocol Handlers.
This is a guide to java.net Package. Here we also discuss the definition and working of the java.net package along with various classes of the java.net package. You may also have a look at the following articles to learn more –