JAVA EXAMPLE PROGRAMS

JAVA EXAMPLE PROGRAMS

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How to get Host name by IP address in Java?


Description:

Below example shows how to get host name for the given IP address. InetAddress class helps you to get these details. The method getByName() provides InetAddress object by passing IP address as its input. By calling getHostName() method on this object, you can get host name.


Code:
package com.myjava.ip;

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

public class MyHostName {

    public static void main(String a[]){
    
        try {
            InetAddress host = InetAddress.getByName("72.167.232.155");
            System.out.println(host.getHostName());
        } catch (UnknownHostException ex) {
            ex.printStackTrace();
        }
    }
}
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Knowledge Centre
doPost Vs doGet methods
doGet() method is used to get information, while doPost() method is used for posting information. doGet() requests can't send large amount of information and is limited to 240-255 characters. However, doPost()requests passes all of its data, of unlimited length. A doGet() request is appended to the request URL in a query string and this allows the exchange is visible to the client, whereas a doPost() request passes directly over the socket connection as part of its HTTP request body and the exchange are invisible to the client.
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About Author

I'm Nataraja Gootooru, programmer by profession and passionate about technologies. All examples given here are as simple as possible to help beginners. The source code is compiled and tested in my dev environment.

If you come across any mistakes or bugs, please email me to [email protected].

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Reference: Java™ Platform Standard Ed. 7 - API Specification | Java™ Platform Standard Ed. 8 - API Specification | Java is registered trademark of Oracle.
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