1. Network Programming Introduction
Based on Classes in the java.net package
6/24/2018
V.B.Sanghavi

2. Network Terminology IP Address Protocol Port Number
Connection-oriented and connectionless protocol
Socket
6/24/2018
V.B.Sanghavi

3. Socket Programming for communication between the machines.
The client in socket programming must know two information:
IP address
Port number
6/24/2018
V.B.Sanghavi

4. Socket class endpoint for communications between the machines.
used to create a socket.
Methods:
- public InputStream getInputStream()
- public OutputStream getOutputStream() - void close()
program
6/24/2018
V.B.Sanghavi

5. ServerSocket class to create a server socket Methods:
- public Socket accept()
- public InputStream getInputStream()
- public OutputStream getOutputStream() - void close()
program
6/24/2018
V.B.Sanghavi

6. URL class - Protocol represents a URL (Uniform Resource Locator)
A URL contains many informations.
: 8080/abc / index.jsp
- Protocol
- Server name or IP Address
- Port Number
- File Name or directory name
6/24/2018
V.B.Sanghavi

7. Methods of URL class public String getProtocol()
public String getHost()
public String getPort()
public String getFile()
Program
6/24/2018
V.B.Sanghavi

8. URLConnection
represents a communication link between the URL and the application.
can be used to read and write data to the specified resource reffered by the URL.
public URLConnection openConnection()
6/24/2018
V.B.Sanghavi

9. InetAddress class represents an IP address. Methods:
public static InetAddress getByName(String host) throws UnknownHostException
public static InetAddress getLocalHost() throws UnknownHostException:
public String getHostName()
l public String getHostAddress()
Program
6/24/2018
V.B.Sanghavi