Perform EulerTour for a given directory

I need writer a class DirectoryTour to persorm an Euler Tour of a given File (i.e. a root of a directory) and i also write a main program to test it, it will call the methods beforeFirst, afterLast and inBetween. the method beforeFirst should be called the first time the node is vistited, the method afterLast should be called the last time the node is vistited, the method inBetween should be called in between each pair of children.  Finally, the default definiation of these methods should be print out the method name,

the a root of a directory like this:
c:\test0                        ------folder
c:\test0\one                -------folder
c:\test0\one\one-a      -------file
c:\test0\one\one-b      -------file
c:\test0\three               -------folder
c:\test0\two             -------folder
c:\test0\two\two-a      -------file
c:\test0\two\two-b      -------file


for example, out output should be like:
       beforeFirst: test0
       beforefirst: one
       beforefirst: one-a
       afterLast: one-a
       inBetween: one
       beforefirst: one-b
       afterLast: one-b
       afterLast: one
       inBetween: test0
ericylrAsked:
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Mayank SAssociate Director - Product EngineeringCommented:
Duplicate of http://www.experts-exchange.com/Programming/Languages/Java/New_to_Java/Q_22474002.html? Pls ask the Q only once and wait till an expert posts
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Mayank SAssociate Director - Product EngineeringCommented:
You don't need to accept this comment - pls get the question deleted
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