Java File Handling Programs

Last Updated : 22 Jun, 2024

Java is a programming language that can create applications that work with files. Files are containers that store data in different formats, such as text, images, videos, etc. Files can be created, read, updated, and deleted using Java.

Java provides the File class from the java.io package to handle files. The File class represents a file or a directory in the file system. It has many methods to perform various operations on files, such as checking if a file exists, creating a new file, deleting a file, getting its name or size, etc.

In this article, we present a comprehensive list of Java file-handling programs with output and explanations.

What is Java File Handling?

Java file handling refers to the process of working with files stored on a computer’s disk. It allows Java programs to read data from files, write data to files, and manipulate files in various ways. Java file handling is essential for applications that need to store or retrieve data persistently, such as databases, text editors, or any software that works with files on a computer system. It enables developers to create robust and versatile applications that can interact seamlessly with files stored on disk.

List of Java File Handling Programs

Below is a complete list of Java file handling examples.

Conclusion

Mastering Java file handling is crucial for developers looking to build robust applications that interact with files stored on disk. Throughout this practice post, we’ve explored fundamental concepts such as reading from and writing to files using Java’s input and output streams. We’ve also delved into advanced topics like manipulating files, checking file metadata, and handling exceptions effectively.

Java File Handling Programs – FAQs

1. What is Java file handling?

Java file handling is the way we read from and write to files in Java programs, allowing us to save and retrieve data for tasks like storing information or configuration settings.

2. How do I read data from a file in Java?

To read data from a file in Java, you can use classes like FileReader and BufferedReader, which help you open, read, and close files easily.

3. How can I write data to a file using Java?

Writing data to a file in Java is done using classes like FileWriter and BufferedWriter, which enable you to create, write, and save information to files.

4. What are the common exceptions in Java file handling?

In Java file handling, common exceptions like FileNotFoundException and IOException can occur when files are missing or errors occur while reading or writing data. Handling these exceptions helps make your code more robust.