Your question: What is superclass of Java Net DatagramSocket?

What is DatagramSocket Java?

A datagram socket is the sending or receiving point for a packet delivery service. Each packet sent or received on a datagram socket is individually addressed and routed. … In order to receive broadcast packets a DatagramSocket should be bound to the wildcard address.

Which exception will occur if specific Port Number is not available for DatagramSocket?

connect() : Connects to the specified address and port.

After connecting to the remote host, this socket can send or receive packet from this remote host only. If a connection cannot be made to the specified remote host, the calls to send() or receive() would throw PortUnreachable Exception.

Which constructor class is DatagramSocket?

Commonly used Constructors of DatagramSocket class

DatagramSocket() throws SocketEeption: it creates a datagram socket and binds it with the available Port Number on the localhost machine. DatagramSocket(int port) throws SocketEeption: it creates a datagram socket and binds it with the given Port Number.

Which exception is thrown by DatagramSocket constructor?

public DatagramSocket() throws SocketException

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If the application is not allowed to listen on the port. This constructor creates a DatagramSocket that is bound to any available port on the local host machine.

What is 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.

What is URL in java?

The Java URL class represents an URL. URL is an acronym for Uniform Resource Locator. It points to a resource on the World Wide Web. … A URL contains many information: Protocol: In this case, http is the protocol.

Is UDP an IP?

User Datagram Protocol (UDP) – a communications protocol that facilitates the exchange of messages between computing devices in a network. It’s an alternative to the transmission control protocol (TCP). In a network that uses the Internet Protocol (IP), it is sometimes referred to as UDP/IP.

What is TCP IP Server socket in Java?

As mentioned earlier, Java has a different socket class that must be used for creating server applications. The ServerSocket class is used to create servers that listen for either local or remote client programs to connect to them on published ports.

Which classes are used for connectionless socket programming?

Socket and ServerSocket classes are used for connection-oriented socket programming and DatagramSocket and DatagramPacket classes are used for connection-less socket programming. The client in socket programming must know two information: IP Address of Server, and. Port number.

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Can constructor be private?

Yes. Class can have private constructor. Even abstract class can have private constructor. By making constructor private, we prevent the class from being instantiated as well as subclassing of that class.

What is socket in java?

Definition: A socket is one endpoint of a two-way communication link between two programs running on the network. … The java.net package in the Java platform provides a class, Socket , that implements one side of a two-way connection between your Java program and another program on the network.

What does the Java net InetAddress class represent?

Explanation: The java.net.InetAddress class represents IP Address of a particular specified host. It can be used to resolve the host name from the IP address or the IP address from the host name.

What is a datagram packet?

Datagram packets are used to implement a connectionless packet delivery service. Each message is routed from one machine to another based solely on information contained within that packet. Multiple packets sent from one machine to another might be routed differently, and might arrive in any order.

What is setSoTimeout in Java?

The setSoTimeout () method of Java Socket class enables or disables the SO_TIMEOUT option with the given timeout value, in milliseconds. The timeout value should be greater than 0 otherwise, it will throw an error.

Which constructor is used for receiving data over DatagramSocket?

Commonly used constructor

Constructor Description
DatagramPacket(byte data[], int size, InetAddress add1 , int port1) It specifies a target address and port, which are used by a DatagramSocket to determine where the data in the packet will be sent.
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