import java.util.Hashtable;
import javax.naming.Context;
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[] argv) throws Exception {
Hashtable env = new Hashtable();
env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
env.put(Context.PROVIDER_URL, "yourURL");
DirContext ctx = new InitialDirContext(env);
// Get an attribute of that type
Attributes attrs = ctx.getAttributes("cn=YourName, ou=People", new String[] { "cn" });
Attribute cnAttr = attrs.get("cn");
// Get its attribute definition
DirContext cnSchema = cnAttr.getAttributeDefinition();
// Get cnSchema's attributes
Attributes cnAttrs = cnSchema.getAttributes("");
}
}