This is my first tutorial at this forum, here i am showing you how to detect localhost name and local ip address

import java.net.*;

class Information
{
public static void main(String [] aa)

{
try{

System.out.println(InetAddress.getLocalHost().getH ostName());
System.out.println(InetAddress.getLocalHost().getH ostAddress());


}catch(Exception e){}

}

}


compile it with save and compile it

compile as follows:
javac Information.java

Run as follows:

java Information

note: If you face any problem please let me know...

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