Reading and Writing Files

The java.io package is needed for both the File and IOException classes.

File Object

import java.io.File;

File f = new File(/*File Path String/*);

Reading Files

Using Scanner

import java.util.Scanner;

Scanner fileScanner = new Scanner(/*File/*);

while(fileScanner.hasNextLine()){

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

}

fileScanner.close();

Using BufferedReader

import java.io.BufferedReader;

import java.io.FileReader;

BufferedReader reader = new BufferedReader(new FileReader(/*File/*));

while((line = reader.readLine()) != null){

  System.out.println(line);

}

reader.close();

Writing Files

Using BufferedWritter

import java.io.BufferedWriter;

import java.io.FileWriter;

BufferedWriterreader writer = new BufferedWriter(new FileWriter(/*File/*));

writer.write(/*text that you want to write to the file/*);

writer.close();