JAVA EXAMPLE PROGRAMS

JAVA EXAMPLE PROGRAMS

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How to get list of all IPs of a given Host in Java?


Description:

Below example shows how to get list of all IPs for the given host. By passing host name to InetAddress.getAllByName() method, you can get list of InetAddress objects. You have to call getHostAddress() method on each object to get all list of IPs.


Code:
package com.myjava.ip;

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

public class MyAllIpAddresses {

    public static void main(String a[]){
    
        try {
            InetAddress[] myHost = InetAddress.getAllByName("www.google.com");
            for(InetAddress host:myHost){
                System.out.println(host.getHostAddress());
            }
        } catch (UnknownHostException ex) {
            ex.printStackTrace();
        }
    }
}
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Knowledge Centre
Can we call servlet destory() from service()?
As you know, destory() is part of servlet life cycle methods, it is used to kill the servlet instance. Servlet Engine is used to call destory(). In case, if you call destory method from service(), it just execute the code written in the destory(), but it wont kill the servlet instance. destroy() will be called before killing the servlet instance by servlet engine.
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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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