LDAP Connection Sample Java

package com.ldap;

import java.util.Hashtable;

import javax.naming.*;
import javax.naming.directory.*;

public class LDAPConnectionSample {
	public static String ldapUri = "ldap://domainName";
	public static String usersContainer = "cn=users,DC=pte-am,DC=companyName,DC=com";

	public static void main(String args[]) {

		String username = "domainName\\userid";
		String password = "password";

		Hashtable<String, String> env = new Hashtable<String, String>();
		env.put(Context.INITIAL_CONTEXT_FACTORY,"com.sun.jndi.ldap.LdapCtxFactory");
		env.put(Context.PROVIDER_URL, ldapUri);
		env.put(Context.SECURITY_PRINCIPAL, username);
		env.put(Context.SECURITY_CREDENTIALS, password);

		try {
			DirContext ctx = new InitialDirContext(env);
			SearchControls ctls = new SearchControls();
			String[] attrIDs = { "cn" };
			ctls.setReturningAttributes(attrIDs);
			ctls.setSearchScope(SearchControls.ONELEVEL_SCOPE);

			NamingEnumeration answer = ctx.search(usersContainer,
					"(objectclass=group)", ctls);
			while (answer.hasMore()) {
				SearchResult rslt = (SearchResult) answer.next();
				Attributes attrs = rslt.getAttributes();
				System.out.println(attrs.get("cn"));
			}
			ctx.close();

		} catch (NamingException e) {
			e.printStackTrace();
		}

	}
}