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How to get the PRACTICAL IP address of my linux box?

I have a Linux box using DHCP to get it's IP address.

I am writing a Java program to show the IP address, I used the following code:

myIP = InetAddress.getLocalHost().getHostAddress();

however, the result of the above code is "127.0.0.1" -- brings me no information....

How does the getHostAddress() work? and in what situation it will return a practical IP address instead of the loopback IP?

Thanks!

Bun
0
bunwong
Asked:
bunwong
1 Solution
 
heyhey_Commented:
try this code

        String hostName = new String();
        try {
            hostName = InetAddress.getLocalHost().getHostName();
        } catch(UnknownHostException uhe) {
            System.err.println("Exception getting host: " +
                uhe.toString());
        }
        System.out.println("Hostname is: " + hostName);

        InetAddress[] allInterfaces=null;
        try {
            allInterfaces = InetAddress.getAllByName(hostName);
        } catch(UnknownHostException uhe) {
            System.err.println("Exception getting host: " +
                uhe.toString());
        }

        for(int x=0;x<allInterfaces.length;x++) {
            System.out.println("IP address " + x+1 + ": " +
                allInterfaces[x].getHostAddress());
        }      



(copy and pasted from
http://groups.google.com/groups?q=Java+%22get+all+IP+addresses%22&hl=en&lr=&ie=UTF-8&oe=utf-8&selm=Hl7E7.4903%24Fr3.100304%40news1.oke.nextra.no&rnum=1
)
0
 
bunwongAuthor Commented:
Hi Heyhey,

Thank you for your comment. However, the code you gave me does not work.

It is able to get the name "localhost" and the IP address "127.0.0.1", but it does not get the other IP address "192.168.1.104".

The IP address "192.168.1.104" is assigned by a DHCP server, the address works on all my IP related tools, e.g. ping, ftp, telnet, vnc.

bun
0
 
girionisCommented:
No comment has been added lately, so it's time to clean up this TA.
I will leave a recommendation in the Cleanup topic area that this
question is:

- points to heyhey_

Please leave any comments here within the
next seven days.

PLEASE DO NOT ACCEPT THIS COMMENT AS AN ANSWER !

girionis
Cleanup Volunteer
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