Learning Path
5 Lessons
1
Tutorial
Introduction to Files
What is a file? Why do we need files? Understanding the difference between text-based and binary files.
2
Tutorial
The File Class
Creating File objects, understanding absolute vs relative paths, and checking if files exist.
3
Tutorial
Reading Files with Scanner
Using Scanner to read from files. Methods like next(), nextLine(), nextInt(), and reading entire files.
4
Tutorial
Writing Files with PrintWriter
Using PrintWriter to write to files. Understanding buffers, why we must close files, and how data reaches the disk.
5
Exercises
File I/O Exercises
10 interactive questions testing your understanding of File class, Scanner, PrintWriter, and file handling concepts.
📚 Key Concepts You'll Learn
File Class
Create File objects that represent files on your computer's storage.
Paths
Understand absolute paths vs relative paths and when to use each.
Scanner for Reading
Read data from files using the familiar Scanner class.
PrintWriter for Writing
Write data to files just like printing to the console.
Buffers & Flushing
Learn why closing files is critical and how data reaches the disk.