📁 File Operations in Java

Master Java File I/O

Read, write, copy, rename - complete file handling guide

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🎯 About

Learn efficient file handling in Java with practical examples. Master reading, writing, and manipulating files for robust applications.

📚 Topics Covered

Operation	Classes Used
Read Files	FileReader, BufferedReader, Scanner
Write Files	FileWriter, BufferedWriter, PrintWriter
Copy Files	Files.copy(), Stream-based
Delete/Rename	File.delete(), File.renameTo()
Directory Ops	File.mkdir(), File.list()

💻 Examples

// Reading file
try (BufferedReader br = new BufferedReader(new FileReader("file.txt"))) {
    String line;
    while ((line = br.readLine()) != null) {
        System.out.println(line);
    }
}

// Writing file
try (BufferedWriter bw = new BufferedWriter(new FileWriter("output.txt"))) {
    bw.write("Hello, World!");
}

// Java NIO (Modern way)
List<String> lines = Files.readAllLines(Paths.get("file.txt"));
Files.write(Paths.get("output.txt"), lines);

🛠️ Technologies

Java 8+ | NIO | File I/O

📬 Contact

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Keywords: Java File-IO FileReader FileWriter BufferedReader NIO File-Handling Stream