JAVA /
FILES

This class is designed for handle file and directory reading, writing, setting in a simple and effective way.

Most of its functions are delegated to platform operations by the JVM which makes them platform-independent.

1. FILES METHODS

The methods have connections towards InputStream, OutputStream, BufferedReader, BufferedWriter and Iterable (reaches all Collection classes which implement it e.g. List).

EXAMPLE FOR READING FILE:

EXAMPLE FOR WRITING FILE:

2. STANDARD OPEN OPTIONS

The OpenOption is an interface. The StandardOpenOption implements it and serves constants which define how to open a file. Use this class with e.g. reading or writing file content.

Typical constant combinations:

• StandardOpenOption.CREATE, StandardOpenOption.TRUNCATE_EXISTING (upon opening, create if non-existent, truncate content to zero if exists)

• StandardOpenOption.CREATE, StandardOpenOption.APPEND (upon opening, create if non-existent, append if exists)

3. WALK FILE TREE

In order to visit and manipulate all files in hierarchy under a certain root directory, Files offers the walkFileTree() method.

In order to use this method, extending the SimpleFileVisitor generic class is needed.

EXAMPLE FOR WALKFILETREE (COPY OR MOVE):

EXAMPLE FOR EXTENDING SIMPLEFILEVISITOR (COPY-MOVE TREE):

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