Mastering Java 2025 – 400 Free Practice Questions to Pass the 'Thinking in Java' Exam

FileReader and FileWriter are recommended for file input and output because they are used for manipulating character files. BufferedInputStream and BufferedOutputStream are used to improve performance while reading and writing bytes from a file, but not specifically for handling character files like in the given examples. Similarly, FileInputStream and FileOutputStream are used for reading from and writing to binary files, not necessarily for character files. DataInputStream and DataOutputStream are used for reading primitive data types from a binary stream, not for file input and output. Therefore, FileReader and FileWriter are the most appropriate classes for file input and output in the given examples.