Javascript calling Java class

Question

Hello, kindly help. I am calling a java class file for validating a username and password. The browser returns no error but it seems that execution does not even pass my class file.
Here is my class file.
import java.sql.*;
import java.applet.Applet;
public class auth extends Applet {
boolean isAuth = false;
String h;
public void init() {
h = "hello"; }
public void login(String user, String pwd) {
try {
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
Connection con = DriverManager.getConnection("jdbc:odbc:test");
Statement stmt = con.createStatement();
ResultSet rs = stmt.executeQuery("select * from users where username ='" + user + "'");
if (rs.next()) {
pswd=rs.getString(2).trim();
     if (pswd.equals(pwd)) {
this.isAuth = true;
rs.close();
con.close();
} catch (Exception ex) {
System.out.println(ex);
Here is aportion of my HTML file.
<script language="JavaScript">
<!--
function auth_user(u, p) {
     document.auth.login(u, p);
     alert (document.auth.h); // property is undefined
     if (document.auth.isAuth) // property is undefined
          alert("User authenticated!");
     } else {
          alert("User not authenticated!");
//-->
</script>
<applet code="auth.class" name="auth" width="1" height="1" id="auth"></applet>
     <form action="" method="post" name="login" id="login">
<input name="uname" type="text" id="uname2" maxlength="10">
<input name="upwd" type="password" id="upwd2" maxlength="10">
          <INPUT TYPE="button" VALUE="Login" onClick="auth_user(document.login.uname.value, document.login.upwd.value)">
Many thanks,

Answer 1

is it running when you making that call? i.e. i hope
you have a lot more in the body of your applet than
just a string assignment. The applet successfully initialized upon loading. However, even the "auth.h" property which is in the init() and is a simple assignment is undefined when I try to display it.