Classes & Beans

Question

I have a valid class name that I would like to create a bean with. My bean does not allow an empty constructor (MyBean() ).
I'm doing the following:
Class newClass = Class.forName(className);
How can I create a new instance of my bean using that class? I cannot do:
Bean bean = (Bean)newClass; since I have to pass some parameters to my bean.
In addition, the bean name will NOT be available to me at design time, it will only be pass to me as a parameter...
Any ideas?

Answer 1

Declare a static factory method in the bean that takes the said parameters. (sory for the tabs that disappear...)
Bean class:
public class Bean
     private String myName = null;
     public Bean( String name )
          myName = name;
     public static Bean createInstance( String s )
          return new Bean( s );
     public String getName()
          return "My name is " + myName;
Loading class:
public class BeanLoader
     public static void main( String[] args )
          try
               Class beanClass = Class.forName( "Bean" );
               Method method = beanClass.getDeclaredMethod(
                    "createInstance",
                    new Class[]{ String.class } );
               Bean bean = ( Bean ) method.invoke( null, new Object[]{ "MyName" } );
               System.out.println( bean.getName() );
          catch( Exception ex )
               ex.printStackTrace();
}