How to load a class from its name.

Question

Hi,
In my program, I want users can write their own classes, these classes need to implement an interface and name of class will be stored in database. I use Class.forName() to load these classes but I cannot type-cast to interface. Please help me.
Here is the code in my program:
public interface A {
public void doSomething();
public class test {
public static void main(String[] args) {
A clazz = (A)Class.forName("MyClass"); // error here
A.doSomething();
}

Answer 1

Hai,
Refine your test class as follows:
public class test
public static void main(String arg[])
try
Class clazz = Class.forName("MyClass");
Object obj = clazz.newInstance();
((MyClass)obj).doSomething();
catch(Exception ex)
System.out.println(ex);
Regards
Raja.