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Which class in Java is used to read data line by line from a file?OptionsFileInputStreamBufferedReaderFileWriterOutputStream

Question

Which class in Java is used to read data line by line from a file?

Options

  1. FileInputStream
  2. BufferedReader
  3. FileWriter
  4. OutputStream
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Solution

Break Down the Problem

  1. Identify the purpose of the question: to determine which Java class is suitable for reading data line by line from a file.
  2. Review the options provided: FileInputStream, BufferedReader, FileWriter, OutputStream.

Relevant Concepts

  1. FileInputStream: Used for reading raw byte streams from a file, not specifically for reading text line by line.
  2. BufferedReader: This class wraps around a Reader (like FileReader) and allows efficient reading of characters, arrays, and lines.
  3. FileWriter: This class is used for writing character files, not for reading.
  4. OutputStream: An abstract class for writing byte streams, thus not suitable for reading.

Analysis and Detail

  • Among the options given, BufferedReader is the most appropriate class for reading text data line by line. This is due to its capability to buffer input for efficient reading, especially for text files, making it a popular choice for reading lines of text from a file.

Verify and Summarize

  • The use of BufferedReader is common in Java programming for reading text efficiently. Other classes mentioned do not serve the specific purpose of reading lines from a file.

Final Answer

The correct class to read data line by line from a file is BufferedReader.

This problem has been solved

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