Category: Java Tutorial

Java FileInputStream

📂 Java FileInputStream FileInputStream is a byte stream class used to read raw byte data from a file.It is mainly used for binary files like images, videos, or any non-text files, but can also...

Java Tutorial

💻 Java I/O Streams In Java, I/O (Input/Output) Streams are used to read data from a source or write data to a destination. InputStream → Read data (input) OutputStream → Write data (output) Streams...

Java Tutorial

Java Delete Files

❌ Java Delete Files Java allows deleting files using: File.delete() (Old, simple method) Files.delete() or Files.deleteIfExists() (Modern, Java NIO) 1. Delete a File Using File.delete()

import java.io.File;

public class DeleteFileExample {
public static void main(String[] args) {
File file = new File("example.txt");

if (file.delete()) {
System.out.println("File deleted successfully: " + file.getName());
} else {
System.out.println("Failed to delete the file or file does not exist.");
}
}
}

import java.io.File;

public class DeleteFileExample {

public static void main(String[] args) {

File file = new File("example.txt");

if (file.delete()) {

System.out.println("File deleted successfully: " + file.getName());

} else {

System.out.println("Failed to delete the file or file does not exist.");

}

Returns true if deletion is successful, false...

Java Tutorial

Java Read Files

📖 Java Read Files Java provides several ways to read data from files, mainly using: File + Scanner FileReader BufferedReader Files.readAllLines() (Java NIO) FileInputStream (for binary data) 1. Reading a File Using Scanner

import java.io.File;
import java.util.Scanner;

public class ReadFileScanner {
public static void main(String[] args) {
try {
File file = new File("example.txt");
Scanner sc = new Scanner(file);

while (sc.hasNextLine()) {
System.out.println(sc.nextLine());
}
sc.close();
} catch (Exception e) {
System.out.println("Error: File not found!");
}
}
}

import java.io.File;

import java.util.Scanner;

public class ReadFileScanner {

public static void main(String[] args) {

try {

File file = new File("example.txt");

Scanner sc = new Scanner(file);

while (sc.hasNextLine()) {

System.out.println(sc.nextLine());

}

sc.close();

} catch (Exception e) {

System.out.println("Error: File not found!");

}

...

Java Tutorial

Java Write to Files

📝 Java Write to Files Java provides several ways to write data to files using: FileWriter BufferedWriter PrintWriter Files.write() (modern method) FileOutputStream (for binary data) 1. Using FileWriter (Simple Text Writing)

import java.io.FileWriter;
import java.io.IOException;

public class WriteFileExample {
public static void main(String[] args) {
try {
FileWriter writer = new FileWriter("example.txt");
writer.write("Hello, this is written using FileWriter!");
writer.close();
System.out.println("Successfully wrote to the file.");
} catch (IOException e) {
System.out.println("An error occurred.");
}
}
}

import java.io.FileWriter;

import java.io.IOException;

public class WriteFileExample {

public static void main(String[] args) {

try {

FileWriter writer = new FileWriter("example.txt");

writer.write("Hello, this is written using FileWriter!");

writer.close();

System.out.println("Successfully wrote to the file.");

} catch (IOException e) {

System.out.println("An error occurred.");

}

🧩...

Java Tutorial

Category: Java Tutorial

Java FileInputStream

Java I/O Streams

Java Delete Files

Java Read Files

Java Write to Files

Java Create Files

Java Files

Java Try-With-Resources

Java Multiple Exceptions

Java Exceptions