I Can't create and add en entry in Ldap using Java

Question

Hello there,
I'm pretty new to LDAP programming, and I have been trying to create and add an entry to a directory using the code sample provided in the JNDI tutorial, but for some reasons, I didn't manage.
the configuration file is well set up because I can't create, add, delete and modify just about anything I want from openLDAP command lines, but my real problem is to do it with java.
here is my code:
import java.util.Hashtable;
import javax.naming.ldap.*;
import javax.naming.directory.*;
import javax.naming.*;
import javax.net.ssl.*;
import java.io.*;
public class Newuser
     public static void main (String[] args)
          //LDAPEntry myEntry = new LDAPEntry();
          Hashtable<String, String> env = new Hashtable<String, String>(11);
          String adminName = "CN=ldap_admin,o=JNDITutorial,dc=img,dc=org";
          String adminPassword = "xxxxxx";
          env.put(Context.INITIAL_CONTEXT_FACTORY,"com.sun.jndi.ldap.LdapCtxFactory");
          //set security credentials, note using simple cleartext authentication
          env.put(Context.SECURITY_AUTHENTICATION,"simple");
          env.put(Context.SECURITY_PRINCIPAL,adminName);
          env.put(Context.SECURITY_CREDENTIALS,adminPassword);
          //connect to my domain controller
          env.put(Context.PROVIDER_URL, "ldap://localhost:389/o=JNDITutorial,dc=img,dc=org");
               // Create the initial directory context
               //JNDILDAPConnectionManager jndiManager = new JNDILDAPConnectionManagerImpl();
              try{
                   DirContext ctx = new InitialDirContext(env);
                    System.out.println("Connection to LDAP server done" );
                   final String groupDN ="ou=people,o=JNDITutorial,dc=img,dc=org";
                  //DirContext dirCtx = jndiManager.getLDAPDirContext();
                  People people = new People("Thiru","Thiru","Thiru Ganesh","Ramalingam","ou=people","[email protected]");
                  // The Common name must be equal in Attributes common Name
                  ctx.bind("cn=Thiru," + groupDN, people);
                  System.out.println("** Entry added **");
                  //jndiManager.disConnectLDAPConnection(ctx);
              }catch(NamingException exception){
                  System.out.println("**** Error ****");
                  exception.printStackTrace();
                  System.exit(0);
}adn this is the class People that i want to instantiate
import java.util.Hashtable;
import javax.naming.Binding;
import javax.naming.Context;
import javax.naming.Name;
import javax.naming.NameClassPair;
import javax.naming.NameParser;
import javax.naming.NamingEnumeration;
import javax.naming.NamingException;
import javax.naming.directory.*;
public class People implements DirContext {
     public People(String uid,String cn,String givenname,String sn,String ou,String mail) {
    BasicAttributes myAttrs = new BasicAttributes(true);  //Basic Attributes
    Attribute objectClass = new BasicAttribute("objectclass"); //Adding Object Classes
    objectClass.add("inetOrgPerson");
    /*objectClass.add("organizationalPerson");
    objectClass.add("person");
    objectClass.add("top");*/
    Attribute ouSet = new BasicAttribute("ou");
    ouSet.add("people");
    ouSet.add(ou);
    myAttrs.put(objectClass);
    myAttrs.put(ouSet);
    myAttrs.put("cn",cn);
    myAttrs.put("sn",sn);
    myAttrs.put("mail",mail);
}as I said, I can add the new entry using an LDIF file "new.txt" that looks like this:
dn:cn=Hamido Saddo,ou=People,o=JNDITutorial,dc=img,dc=org
cn:Hamido Saddo
mail:[email protected]
telephonenumber:3838393038703
sn:hamido
objectclass:top
objectclass:person
objectclass:organizationalPerson
objectclass:inetOrgPersonusing the following command:
ldapadd -D "cn=ldap_admin,o=JNDITutorial,dc=org,dc=img" -W -f new.txtand eveything works
but when i try with the java, i get the following error:
javax.naming.directory.SchemaViolationException: [LDAP: error code 65 - entry has no objectClass attribute]
so, can anyone help me please !!!

Answer 1

uncomment these lines
/*objectClass.add("organizationalPerson");
objectClass.add("person");
objectClass.add("top");*/
you need all of them to add successfully
your LDIF has all the four lines
objectclass:top
objectclass:person
objectclass:organizationalPerson
objectclass:inetOrgPerson
hope this helps