Java by API/javax.naming.ldap/Control

Control.CRITICAL

  

import java.util.Hashtable;
import javax.naming.Context;
import javax.naming.NameClassPair;
import javax.naming.NamingEnumeration;
import javax.naming.ldap.Control;
import javax.naming.ldap.InitialLdapContext;
import javax.naming.ldap.LdapContext;
import javax.naming.ldap.SortControl;
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");
  
    Control[] connectCtls = new Control[] { null };
    LdapContext ctx = new InitialLdapContext(env, null);
    Control[] ctxCtls = new Control[] { new SortControl(new String[] { "cn" }, Control.CRITICAL) };
    ctx.setRequestControls(ctxCtls);
    NamingEnumeration answer = ctx.list("");
    while (answer.hasMore()) {
      NameClassPair item = (NameClassPair) answer.next();
    }
  }
}