Reading and writing files using byte streams

• Java provides classes and methods for reading and writing files.

• The most common files are those on disk.

• In Java, all files are byte-oriented.

• The language offers methods for reading and writing bytes in files.

• It is common to use byte streams to read and write files.

• Java allows you to encapsulate a byte-oriented file stream in a character-based object.

• To create a byte stream linked to a file, use FileInputStream or FileOutputStream.

• To open a file, create a FileInputStream or FileOutputStream object with the file name in the constructor.

• After opening the file, you can read and write to it.

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