IP Address: An Internet Protocol address is a numerical label assigned to each device connected to a computer network that uses the Internet Protocol for communication.
Packages used:
- io (input-output): This package provides for system input and output through data streams, serialization, and the file system.
- net (network): This package provides the classes for implementing networking applications.
- util (utility): It contains the collection framework, legacy collection classes, event model, date and time facilities, internationalization, and miscellaneous utility classes
Methods Used:
1. getInetAddresses()
Syntax:
public Enumeration getInetAddresses()
Return Type: It returns an Enumeration of InetAddress.
2. getInterfaceAddresses()
Syntax:
public List getInterfaceAddresses()
Return Type: It returns a list of java.net.InterfaceAddress instances.
Below is the implementation of the problem statement:
Java
// Java Program to Get System IP Address// in Windows and Linux Machineimport static java.lang.System.out;import java.io.*;import java.net.*;import java.util.*;public class gfg { public static void main(String args[]) // main method throws SocketException { // fetching network interface Enumeration<NetworkInterface> nets = NetworkInterface.getNetworkInterfaces(); for (NetworkInterface netint : Collections.list(nets)) displayInterfaceInformation(netint); } // Display Internet Information method static void displayInterfaceInformation(NetworkInterface netint) throws SocketException { out.printf("Display name: %s\n", netint.getDisplayName()); out.printf("Name: %s\n", netint.getName()); Enumeration<InetAddress> inetAddresses = netint.getInetAddresses(); // Output System IP for (InetAddress inetAddress : Collections.list(inetAddresses)) { out.printf("System IP: %s\n", inetAddress); } out.printf("\n"); }} |
Output
Display name: eth0 Name: eth0 Display name: lo Name: lo System IP: /127.0.0.1
Output in Windows:
Output in Linux:
