How to find relative address of a file?

Question

I have a folder structure as below:
A
+-B
  +-D.class
  +-D.java
Daop.propsThere is a folder named A along with a file Daop.props (not inside folder A) . Inside A there is another folder B which contains D.java and D.class. From this D.java how to access "Daop.props".
Consider the following code inside D.java ..
var1.loadSystemProps(getClass().getResourceAsStream("Daop.props"));The above statement searches inside B directory..
var1.loadSystemProps(getClass().getResourceAsStream("/Daop.props"));The above statement searches inside A directory which is just above B., ie., the above code searches the neighbors of B...
How to make it search neighbors of A... what is the code for it...
For the given directory structure the both of the code shows java.lang.NullPointerException
Please help...

Answer 1

I guess you could also use the classLoaders get resource, which has no concept of "current directory with the jar".
o.getClass().getClassLoader().getResourceAsStream("Daop.props")http://java.sun.com/javase/6/docs/api/java/lang/ClassLoader.html#getResource(java.lang.String)
Finds the resource .... in a way that is independent of the location of the code.
Hope that helps, even if I'm a bit late.
Cheers. Keith.