Java by API/javax.naming/NamingEnumeration

NamingEnumeration: hasMore()

   
import java.util.Hashtable;
import javax.naming.Context;
import javax.naming.NamingEnumeration;
import javax.naming.directory.SearchResult;
import javax.naming.ldap.HasControls;
import javax.naming.ldap.InitialLdapContext;
import javax.naming.ldap.LdapContext;
public class Main {
  public static void main(String[] argv) throws Exception {
    String url = "ldap://localhost/o=JNDITutorial";
    Hashtable<String, String> env = new Hashtable<String, String>();
    env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
    env.put(Context.PROVIDER_URL, url);
    env.put(Context.SECURITY_AUTHENTICATION, "simple");
    env.put(Context.SECURITY_PRINCIPAL, "userDN");
    env.put(Context.SECURITY_CREDENTIALS, "secret");
    LdapContext ctx = new InitialLdapContext(env, null);
    NamingEnumeration answer = ctx.search("ou=People", "(cn=*)", null);
    System.out.println(ctx.getResponseControls());
    while (answer.hasMore()) {
      SearchResult si = (SearchResult) answer.next();
      if (si instanceof HasControls) {
        System.out.println(((HasControls) si).getControls());
      }
    }
    System.out.println(ctx.getResponseControls());
  }
}