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k sabeerdeen

Joined: Mar 11, 2010
Posts: 14
i tried to call a method isValidUserId() in LoginImplementation.java from LoginMain.java

i am getting the following exception:

Cannot find class [LoginImplementation] for bean with name 'isValidUserId'
defined in class path resource [BusinessObject.xml];
nested exception is java.lang.ClassNotFoundException: LoginImplementation

i am using eclipse 3.4


public static void main(String args[])

LoginController loginController = LoginFactory.isValidUserId();
String result = loginController.isValidUserId(loginDTO);
}catch(Exception e){
// here i got the exception

public interface LoginController{
public Collection isValidUserId() throws Exception;


public class LoginFactory {

public static LoginController isValidUserId() throws Exception {
ClassPathResource resource = new ClassPathResource("BusinessObject.xml");
BeanFactory factory = new XmlBeanFactory(resource);
return (LoginController) factory.getBean("isValidUserId");


<bean id="isValidUserId" class="com.visiontss.smartweb.spring.LoginImplementation"/>

public class LoignImplementation implements LoginController {
public Collection isValidUserId() throws Exception {
System.out.println("Yes Valid user");
thanks in advance
Mark Secrist
Ranch Hand

Joined: Jul 01, 2003
Posts: 89
Ultimately, it seems like it comes down to the Spring container not being able to locate the class LoginImplementation. Here are a couple of things to consider.
  • You may have mistyped the full path (package + class name) in the bean definition
  • A classfile may not have been generated since it looks like the isValidUserId method on LoginImplementation should return a value since your method signature says it does

  • Mark
    It is sorta covered in the JavaRanch Style Guide.
    subject: CannotLoadBeanClassException
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