Which of these class is used to read characters in a file?OptionsFileWriterFileReaderFileInputStreamInputStreamReader

Break Down the Problem

1. Identify the options provided: FileWriter, FileReader, FileInputStream, InputStreamReader.
2. Understand the functionality of each class regarding file reading.

Relevant Concepts

1. FileReader: This class is specifically designed to read character files.
2. FileWriter: This is used for writing characters to a file.
3. FileInputStream: This class reads bytes from a file, not characters.
4. InputStreamReader: This serves as a bridge from byte streams to character streams, converting bytes to characters.

Analysis and Detail

• The FileReader class directly reads characters in a file and is optimized for character streams.
• The InputStreamReader can also read characters but requires a byte stream input. While it converts bytes into characters, it is less direct if the goal is solely to read characters from a file.

Verify and Summarize

Considering the main function required is reading characters from a file, the most straightforward and appropriate class from the options is FileReader.

Final Answer

FileReader is the class used to read characters in a file.