File Handling Classes in Java

File Handling When working with Java, handling files is a very common task — whether you're storing data, reading input, or creating logs. Java provides several classes in the java.io package to make file handling easy. Let’s understand the most important ones in a simple way. 1. File Class – Working with Files & Folders The File class is used to create, delete, and get details about files or directories. Important: It does NOT read or write data inside the file — it only manages file properties. Common Methods createNewFile() → Create a new file exists() → Check if file exists getName() → Get file name getAbsolutePath() → Get full file path canRead() → Check read permission canWrite() → Check write permission canExecute() → Check execute permission length() → Get file size delete() → Delete file mkdir() → Create folder mkdirs() → Create multiple folders list() → List files in directory 2. FileReader – Reading Text Files FileReader is used to read characters from a file. It’s a sim