import java.io.*;
import java.net.*;
class Test{
public static void main(String args[]){
try{
InetAddress ia[] = InetAddress.getAllByName(arg[0]);
for( int i = 0 ; i < ia.length ; i++ ){
System.out.println("Host:" + ia[i].getHostName());
System.out.println("Host:" + ia[i].getHostAddress());
System.out.println();
}
}catch(Exception e){
System.err.println(e);
}
}
}
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