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import java.util.Enumeration;
import java.util.Hashtable;
import javax.naming.directory.Attribute;
import javax.naming.directory.Attributes;
import javax.naming.directory.DirContext;
import javax.naming.directory.InitialDirContext;
public class Main {
public static void main(String args[]) throws Exception {
Hashtable<String, String> env = new Hashtable<String, String>();
env.put("java.naming.factory.initial", "com.sun.jndi.dns.DnsContextFactory");
env.put("java.naming.provider.url", "dns://123.123.123.123/");
String dns_attributes[] = { "MX", "A", "HINFO" };
DirContext ctx = new InitialDirContext(env);
Attributes attrsl = ctx.getAttributes("http://www.yourserver.com", dns_attributes);
for (int z = 0; z < dns_attributes.length; z++) {
Attribute attr = attrsl.get(dns_attributes[z]);
if (attr != null) {
System.out.print(dns_attributes[z] + ": ");
for (Enumeration vals = attr.getAll(); vals.hasMoreElements();) {
System.out.println(vals.nextElement());
}
}
}
}
}
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