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This chapter explores the concept of files and streams in computing, focusing on long-term data retention using secondary storage devices such as hard disks, optical disks, flash drives, and magnetic tapes. Learn about persistent data, data hierarchy, record keys, and organizing records in sequential files. Discover how java views files as streams of bytes and the use of classes like fileinputstream, fileoutputstream, filereader, filewriter, and file for managing files and directories.
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