Java app not able to connect to SQL Server, windows authentication

I am trying to conenct from a java app to SQL Server with Windows authentication (not SQL Server one) but it fails.

Please see code below.
dbURL=jdbc:sqlserver://tst-server:1433;databaseName=my_DB;integratedSecurity=true;

 try
 {

       Class.forName(driverName);
    Connection dbConn = DriverManager.getConnection(dbURL);
    System.out.println("Connection Successful!");  
    // if successful print Connection Successful!
    return dbConn;

  }
 catch (Exception e)
 {
     e.printStackTrace();
     return null;
  }

I am receiving this error:
access denied (java.net.SocketPermission tst-eudqt:1433 connect,resolve)

If I use SSMS I can access the server and the db ;-)