Java File Handling: Mastering File Operations in Java

Learn the essentials of Java file handling with the powerful File class from the java.io package. This guide covers the fundamental operations for creating, reading, writing, and deleting files in Java applications. Discover how effective file handling enhances your application's functionality and user experience.

Java File Handling

File handling is an important part of any application. Java provides the File class in the java.io package to work with files.

Syntax


import java.io.File;  // Import the File class

File myObj = new File("filename.txt"); // Specify the filename

Output

File Class Methods

Method	Type	Description
`canRead()`	Boolean	Tests whether the file is readable or not
`canWrite()`	Boolean	Tests whether the file is writable or not
`createNewFile()`	Boolean	Creates an empty file
`delete()`	Boolean	Deletes a file
`exists()`	Boolean	Tests whether the file exists
`getName()`	String	Returns the name of the file
`getAbsolutePath()`	String	Returns the absolute pathname of the file
`length()`	Long	Returns the size of the file in bytes
`list()`	String[]	Returns an array of the files in the directory
`mkdir()`	Boolean	Creates a directory