reload java class

[mharsijamel]

i have 3 classes:
class A:contains main and invoke class B
class B:contains an interface showing the contents of a file
class C:modify the file
i want to know how reload the class B to show the modification made in class C
please help me

[DarrylBurke]

First get your terminology correct. You don't want to reload a class, you want to open and read a file.

Also, interface has a very specific meaning as a Java keyword. I guess you're referring to a Graphical User Interface, normally abbreviated as GUI.

To get better help sooner, post a SSCCE that clearly demonstrates your problem.

Also go through How to ask questions the smart way

db

[mharsijamel]

sorry my english is bad
but i want to know how to see changes made at this file without making another run

[Hibernate]

Well, then you need to listen for file modifications.
And I believe that is OS dependent, so there is (probably) no built in [in Java] method for that.