File Handaling in java

What is File Handling?

$ File Handling is the process of creating, reading, writing, updating, and deleting files using a programming language — in this case, Java.

$ It allows a Java program to interact with files stored on your computer or server.

Why File Handling is Important:

$ To store data permanently (like user data, logs, reports).

$ To read data that was saved earlier.

$ To modify existing files (update, append).

$ To automate file-related tasks (like backup, reports, etc.).

In Java, File Handling is done using classes from:

$ java.io package (traditional way)
$ java.nio.file package (newer, more efficient way)

File class:

$ the file is class alredy store in package.
$ File is a class used file path in object.
$ invok in object.
$ file object print (mostly path or refrence).

File file = new File("E:\project/sugu.txt");
file.createNewFile();
System.out.println(file);

canExecute():

$ can this file excute it.it returns a boolean.

System.out.println(file.canExecute());

canRead():

$ //can we read file.
System.out.println(file.canRead());

canWrite():

$ can we write the file

canWrite():

$ we can wtite the file.
System.out.println(file.canWrite());

delete():

$ we can delete the file.
System.out.println(file.delete());

exists():

$ it returns whether the file really exists or not.

System.out.println(file.exists());

getAbsolutePath():#

$ computer full path file current location.

getAbsolutePath():# System.out.println(file.getAbsolutePath());

getPath:

$ this file return create give the path
System.out.println(file.getPath());

getName:

$ this file return only name(sugu.txt).

System.out.println(file.getName());

isDirectory:

$ Directory is folder.

file.isFile():

$ should be file.
System.err.println(file.isFile());