What is the best way to find the users home directory in Java?

Question

The difficulty is that it should be cross platform. Windows 2000, XP, Vista, OSX, Linux, other unix variants. I am looking for a snippet of code that can accomplish this for

Answer 1

Others have answered the question before me but a useful program to print out all available properties is:

for (Map.Entry e : System.getProperties().entrySet()) {
    System.out.println(String.format("%s = %s", e.getKey(), e.getValue())); 
}