Jan 4, 2025 · There are several ways to read a plain text file in Java e.g. you can use FileReader, BufferedReader, or Scanner to read a text file. Every utility provides something special e.g. BufferedReader provides buffering of data for fast reading, and Scanner provides parsing ability.

Read a File. In the previous chapter, you learned how to create and write to a file. In the following example, we use the Scanner class to read the contents of the text file we created in the previous chapter:

Jan 8, 2024 · In this tutorial, we’ll explore different ways to read from a File in Java. First, we’ll learn how to load a file from the classpath, a URL, or from a JAR file using standard Java classes. Second, we’ll see how to read the content with BufferedReader , Scanner , StreamTokenizer , DataInputStream , SequenceInputStream, and FileChannel .

The most simple way to read data from a file in Java is making use of the File class to read the file and the Scanner class to read the content of the file.

Use following codes to read the file . import java.io.File; import java.util.Scanner; public class ReadFile { public static void main(String[] args) { try { System.out.print("Enter the file name with extension : "); Scanner input = new Scanner(System.in); File file = new File(input.nextLine()); input = new Scanner(file); while (input ...

Aug 28, 2015 · Read the file and loop over its content line by line. Then parse the lines and create a new Employee() in each iteration. Set your values, such as id and name. Finally, add your new Employee instance to a List<Employee> and continue with the next entry. // List to collect Employee objects. List<Employee> employees = new ArrayList<Employee>();

Apr 10, 2019 · This article focus on a few of the commonly used methods to read a file in Java. Files.readString, returns a String (Java 11), max file size 2G. Files.readAllBytes, returns a byte[] (Java 7), max file size 2G.

Reading a File in Java. We can read a file in Java using multiple ways. Following are three most popular ways to create a file in Java −. Using FileInputStream() constructor. Using FileReader.read() method. Using Files.readAllLines() method. Let's take a look at each of the way to read file in Java.

In this tutorial, we will learn about Java FileReader and its methods with the help of examples. The FileReader class of the java.io package can be used to read data (in characters) from files.

In this Java tutorial, we will explore different ways to read a text file into String in Java from traditional BufferedReader, new APIs in Java 8 and 11 to third-party libraries such as Apache Commons Lang and Guava.