How to notice IP address of local host from Java program
Java networking API provides method to notice IP address of localhost from Java programme past times using java.net. InetAddress class. It’s rare when you lot bespeak IP address for localhost inwards Java program. Mostly I used Unix ascendance to notice IP address of localhost. For all practical move where programme doesn’t bespeak IP address but you lot bespeak to troubleshoot whatsoever networking issues, Use DOS or windows ascendance or Use Linux commands. Recently 1 of my friend faced this enquiry inwards a core Java interview, where they are expecting Java developer alongside simply about socket programming experience, But until you lot know or you lot bring done it earlier its difficult to response this fact based question, which motivates me to write this post. In this Java tutorial nosotros volition run across How to notice IP address of localhost from Java program. By the agency it’s likewise proficient to hollo upward list of Unix networking commands to troubleshoot whatsoever networking issues related to Java application inwards Unix environment.
IP Address of localhost from Java program
As I said InetAddress from java.net packet is used to stand upward for an IP address inwards Java. an IP address is a 32 or 128 fleck unsigned number used past times IP protocol which is backbone of many pop protocols similar TCP as well as UDP. There are 2 kinds of IP address IPv4 as well as IPv6 as well as IP address is associated alongside host which tin plough over notice last notice past times host mention resolution process. Hostname resolution is performed past times combining local machine configuration as well as network naming services such equally the DNS(Domain mention system) as well as NIS(Network Information Service). InetAddress has method to resolve hostname as well as IP address as well as vice versa. Here is a consummate code representative of finding IP address from Java program.
import java.net.UnknownHostException;
/**
* Simple Java programme to notice IP Address of localhost. This programme uses
/**
* Simple Java programme to notice IP Address of localhost. This programme uses
* InetAddress from java.net packet to notice IP address.
*
* @author Javin Paul
*/
public class IPTest {
public static void main(String args[]) throws UnknownHostException {
InetAddress addr = InetAddress.getLocalHost();
//Getting IPAddress of localhost - getHostAddress render IP Address
*
* @author Javin Paul
*/
public class IPTest {
public static void main(String args[]) throws UnknownHostException {
InetAddress addr = InetAddress.getLocalHost();
//Getting IPAddress of localhost - getHostAddress render IP Address
// inwards textual format
String ipAddress = addr.getHostAddress();
System.out.println("IP address of localhost from Java Program: " + ipAddress);
//Hostname
String hostname = addr.getHostName();
System.out.println("Name of hostname : " + hostname);
}
}
Output:
IP address of localhost from Java Program: 190.12.209.123
Name of hostname : PCLOND3433
String ipAddress = addr.getHostAddress();
System.out.println("IP address of localhost from Java Program: " + ipAddress);
//Hostname
String hostname = addr.getHostName();
System.out.println("Name of hostname : " + hostname);
}
}
Output:
IP address of localhost from Java Program: 190.12.209.123
Name of hostname : PCLOND3433
That’s all on How to notice IP address of localhost from Java. Its overnice tip to know but equally I said java.net is non a mutual packet similar java.lang or java.util. Best agency to larn as well as hollo upward networking concepts inwards Java is to write simply about customer server programme which uses these essential classes.Further Learning
Complete Java Masterclass
How to convert String to Integer inwards Java