Please help!!!

I have a problem when I try to connect to mysql server located on the
host
named zeus thru the jdbc: mysql-connector-java!!!
(what is even more weird is that I have no problems connecting and
doing
whatever I want thru mysql client using the connection string: mysql
-h zeus -u dgjorgjevik kompanija)??????

It keeps giving me this error message:

Connection string: jdbc:mysql://zeus:3306/kompanija&user=dgjorgjevik&password=
Error: 1044 -> S1000
Message: General error,  message from server: "Access denied for user:
'@%' to database 'kompanija&user=dgjorgjevik&password='"
java.lang.NullPointerException
       at DBPrebaruvanje.DBConnection.getResultset(DBConnection.java:76)
       at DBPrebaruvanje.DBConnection.getResultset(DBConnection.java:84)
       at switchboardApp.EmployeeForm.initComponents(EmployeeForm.java:53)
       at switchboardApp.EmployeeForm.<init>(EmployeeForm.java:24)
       at switchboardApp.SwitchboardApp.<init>(SwitchboardApp.java:42)
       at switchboardApp.SwitchboardApp.main(SwitchboardApp.java:235)

And the code to produce this is:
conn = new DBConnection("kompanija", "dgjorgjevik", "",
DBConnection.MYSQL, "zeus");

//constructor for DBConnection class
public DBConnection(String DBN, String user, String pass, int
serverType, String host) {
       String strClassName;
       String strConnection;
       DBName = DBN;
       username = user;
       password = pass;
       
       if (serverType == ODBC) {
           strClassName = "sun.jdbc.odbc.JdbcOdbcDriver";
           strConnection = "jdbc:odbc:" + DBName;
       } else if (serverType == MYSQL) {
           strClassName = "com.mysql.jdbc.Driver";
           strConnection = "jdbc:mysql://" + host + ":3306/" + DBName
+ "&user=" + user + "&password=" + pass;
       } else {
           strClassName = "";
           strConnection = "";
       }
       try {
           Class.forName(strClassName);
       } catch (ClassNotFoundException e) {
           System.out.println("Couldn't find class!");
           e.printStackTrace();
       }
       try {
           if (serverType == ODBC) {
               conn = DriverManager.getConnection(strConnection,
username, password);
           } else if (serverType == MYSQL) {
               conn = DriverManager.getConnection(strConnection);
           }
       } catch (SQLException e) {
           System.out.println("Connection string: " + strConnection);
           System.out.println("Error: " + e.getErrorCode() + " -> " +
e.getSQLState());
           System.out.println("Message: " + e.getMessage());
       }
   }