import java.util.Properties;import javax.naming.*; import javax.naming.directory.*;//include the JNDI in the classpath. You should use the same JDK used by WebSphere Application server.class wasLdapAuth {public static void main(String[] args) { //***************** user information to be authenticated ******************************** //*****************Please modify the following three properties accordingly ************ String ldapHost= \"ldap://cliang1.austin.ibm.com:389\"; //ldap host + port number String DN = \"cn=user1, ou=Austin,o=ibm,c=us\"; // DN to be authenticated String password = \"security\"; // DN\\\'s password //***************** End of user information Properties props = new Properties(); props.put(Context.INITIAL_CONTEXT_FACTORY, \"com.sun.jndi.ldap.LdapCtxFactory\"); //for websphere 4.0 and 5.0 //props.put(Context.INITIAL_CONTEXT_FACTORY, \"com.ibm.jndi.LDAPCtxFactory\"); // for WebSphere 3.5 release props.put(Context.SECURITY_AUTHENTICATION, \"simple\"); //use simple authentication mechanism props.put(Context.SECURITY_CREDENTIALS, password); props.put(Context.SECURITY_PRINCIPAL, DN); props.put(Context.PROVIDER_URL, ldapHost); long start = System.currentTimeMillis(); long end=0; long time =0; try { System.out.println(\"authenticating\"); DirContext ctx = new InitialDirContext(props); System.out.println(\"authenticated\"); end = System.currentTimeMillis(); time = end - start; System.out.println( \"authentication takes = \" + time + \" millis\"); System.out.println(\"successfully authenticate DN: \"+DN); } catch (Exception ex) { end = System.currentTimeMillis(); time = end - start; System.out.println(\"Exception is \"+ex.toString()); ex.printStackTrace(); System.out.println( \"authentication takes = \" + time + \" millis\"); System.out.println(\"fail to authenticate DN: \"+DN); }}}