Public static void main(String args) throws IOExceptionįileReader fileReader = new FileReader(fileName) Įxample 2: Reading a file one character at a time This should be used only for small text files. Here we are attempting to read the file in single read() operation so make sure you create a sufficiently large char to store all the content on the file. The file contains 3 small hello world messages.

In the given example, we are reading a text file. Example 1: Reading a file using FileReader Lets see a few examples to read a file using the FileReader in Java. To specify the a different character encoding, we can pass the encoding information as Charset in the second argument to both constructors.įileReader input = new FileReader(fileName, Charset.forName('UTF8')) įileReader input = new FileReader(file, Charset.forName('UTF8')) Creating FileReader using the File objectįile file = new File('c: emp est.txt') Ībove both examples create the file reader instance with the default character encoding. Create an instance in the application codeįileReader input = new FileReader(fileName) Ģ.2. Creating FileReader using the name of the file For creating the instance of FileReader, use one of its constructors. To use the FileReader in the application, we must first import it from package java.io using the import statement. It uses a default buffer size for reading the files.If not provided, it uses the platform’s default charset.It implements Closeable, AutoCloseable and Readable interfaces.It is meant for reading streams of characters.In this tutorial, we will learn about FileReader class, its constructors, methods and usages with the help of examples. Java FileReader class can be used to read data (stream of characters) from files.

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