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The FileReader class in Java is used to read character streams from files. It is part of the java.io package and is ideal for reading text files.
Example: Reading a File Using FileReader
import java.io.FileReader;public class Main {public static void main(String[] args) {try {FileReader reader = new FileReader("example.txt");int character;// Read characters one by onewhile ((character = reader.read()) != -1) {System.out.print((char) character);}reader.close();} catch (Exception e) {e.printStackTrace();}}}Copied!✕CopyThis example reads a file named example.txt character by character and prints its content to the console.
Key Methods of FileReader
read(): Reads a single character and returns its integer value or -1 if the end of the file is reached.
int charValue = reader.read();Copied!✕Copyread(char[] array): Reads multiple characters into an array.
char[] buffer = new char[100];reader.read(buffer);Copied!✕Copyclose(): Closes the file reader to release system resources.
reader.close();Copied!✕Copy Java FileReader Class - GeeksforGeeks
Nov 7, 2025 · The FileReader class in Java is used to read data from a file in the form of characters. It is a character-oriented stream that makes it ideal for reading text files.
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java - Do I need to close () both FileReader and BufferedReader ...
If you don't have access to the source code and want to see whether your reader and JVM calls close on the various readers and streams in your situation, you could override the close method as a simple test.
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