JAVA EXAMPLE PROGRAMS

JAVA EXAMPLE PROGRAMS

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How to get IP address of a Host in Java?


Description:

You can get IP address of any host by using InetAddress class. By calling getByName() method with host name as parameter, it returns InetAddress object. On this object you can call getHostAddress() method to get the IP address of the given host.


Code:
package com.myjava.ip;

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

public class MyIpByHost {

    public static void main(String a[]){
    
        try {
            InetAddress host = InetAddress.getByName("www.java2novice.com");
            System.out.println(host.getHostAddress());
        } catch (UnknownHostException ex) {
            ex.printStackTrace();
        }
    }
}
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Knowledge Centre
Domain Naming Service(DNS)
It is very difficult to remember a set of numbers (IP address) to connect to the Internet. The Domain Naming Service(DNS) is used to overcome this problem. It maps one particular IP address to a string of characters. For example, www.java2novice.com implies com is the domain name reserved for US commercial sites, java2novice is the name of the company and www is the name of the specific computer, which is java2novice's server.
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Reference: Java™ Platform Standard Ed. 7 - API Specification | Java is registered trademark of Oracle.
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