How to replace classes in a running application in java ?

Question

Say I have a class named NameGenerator. I can use this to generate names according to a given logic. Then I write a TestNameGeneration class with a

Answer 1

You can write your own custom classloader. When ever there is change in the class file or resource/jar containing the class file (check the timestamp), destroy the previous classloader instance and create a new classloader instance which in turn will load the new class file.