How to access a method of a class which just known class name as String

Question

Hi,
Now I have several class and I want to access the method of these class. But what I have is a String which contain the complete name of the class.
For example, I have two class name class1and class2, there are method getValue in each class. Now I have a String containing one class name of these two class. I want to access the method and get the return value.
How could I do?
With Class.forName().newInstance I can get a Object. but it doesn't help to access and execute the method I want .
Could anybody help me?
Thanks

Answer 1

Or, if Class1 and Class2 have a common parent class or interface (and they should if you're handling them the same way in the same codepath)...Class c = Class.forName("ClassName");
Object o = c.newInstance(); // assumes there's a public no-arg constructor
ParentClassOrInterface pcoi = (ParentClassOrInterface)o;
Something result = pcoi.someMethod(); Or, if you're on 5.0, I think generics let you do it this way: Class<ParentClassOrInterface> c = Class.forName("ClassName");
// or maybe
Class<C extends ParentClassOrInterface> c = Class.forName("ClassName");
ParentClassOrInterface pcoi = c.newInstance();
Something result = pcoi.someMethod();