Java EE (Java Enterprise Edition) General Discussion

I have a bean something like this;

public class FormBean
{
String [] languages;

public FormBean()
{
}

// getters and setters for "languages"

}

Note that nowhere I have specified what should be the capacity of the array should be. Now I use a jsp page which puts some of the form properties in this array, but the number of form elements that goes into this array is dynamic i.e. depends on the user. I am using the following tag for setting the bean properties:

<jsp:setProperty name="formBean" property="*"/>

Now I see that the jsp page is dynamically increasing decreasing the array based on the user input. How this is possible?? I thought arrays are suppoed to be static?

Please advice if I am doing/thinking something wrong here...

tx
-AB