Java File Io — Free Java Tutorial
Learn Java File Io in Java with a free, beginner-friendly tutorial, examples and practice for Indian students on Syllab.in.
TL;DR: Learn Java File Io in Java with a free, beginner-friendly tutorial, examples and practice for Indian students on Syllab.in.
Written & reviewed by the Syllab.in Academic Team (CBSE/NCERT subject experts) · Updated
Java File Io in Java
Java's java.io and java.nio packages provide classes for reading and writing files. The modern NIO.2 API (Files, Paths) from Java 7+ is cleaner and more powerful.
For reading: Files.readAllLines(), Files.readString() (Java 11+), BufferedReader for large files. For writing: Files.writeString(), Files.write(), BufferedWriter.
Always use try-with-resources to auto-close streams: try (BufferedReader br = ...) { } — ensures the file is closed even if an exception occurs.
Path (java.nio.file.Path) represents a file path in a platform-independent way. Paths.get() creates a Path. Files class provides static utility methods for common operations.
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