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How to split a string into a number of substrings in Java

How to split a string into a number of substrings?

Following example shows how to change the host name to its specific IP address with the help of InetAddress.getByName() method of net.InetAddress class.

import java.net.InetAddress;
import java.net.UnknownHostException;

public class GetIP {
   public static void main(String[] args) {
      InetAddress address = null;
      try {
         address = InetAddress.getByName("www.javatutorial.com");
      } catch (UnknownHostException e) {
         System.exit(2);
      }
      System.out.println(address.getHostName() + "=" + address.getHostAddress());
      System.exit(0);
   }
}

The above code sample will produce the following result.

http://www.javatutorial.com = 123.14.2.35

The following is an another example of getHostAddress() and getHostName() in Java

import java.net.InetAddress;
import java.net.UnknownHostException;

public class Demo {
   public static void main(String[] args) {
      InetAddress ipadd;
      String hostname;
      try {
         ipadd = InetAddress.getLocalHost();
         hostname = ipadd.getHostName();
         System.out.println("Your IP address : " + ipadd);
         System.out.println("Your Hostname : " + hostname);
      } catch (UnknownHostException e) {
      }
   }
}

The above code sample will produce the following result.

Your IP address : 4d623edc62d4/172.17.0.2
Your Hostname : 4d623edc62d4

java_networking.htm

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