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Paths & Files

Medium Priority31 min readUpdated June 6, 2026

Path and Files are the two types used for file work in modern Java. Path is an abstract pathname that replaces the older File class. Files is a static utility class that does almost every common file operation in one method call: read a whole file into a string, write a list of lines, copy, move, delete, walk a directory tree. This lesson covers how to build a Path, what it exposes, and the parts of the Files API used day to day.

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