/**
 * How to determine the class object.
 *
 */
public class ReflectionDemo
{
    public static void main(String[] args)
    {
        try
        {
            Class<?>  classObj = Class.forName("java.util.List");
            
            /*
             * Returns:true if this object represents an interface; false otherwise.
             */
            System.out.println("Is a Interface  = " + classObj.isInterface());
            /*
             * Returns:true if and only if this class is a member class.
             */
            System.out.println("Is a MemberClass = " + classObj.isMemberClass());
            /*
             * Returns:true if and only if this class represents a primitive type
             */
            System.out.println("Is a Primitive = " + classObj.isPrimitive());
        }
        catch (ClassNotFoundException e)
        {
            e.printStackTrace();
        }
        
    }

}

Is a Interface  = true
Is a MemberClass = false
Is a Primitive = false