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What is the difference between the classes PrintWriter and PrintStream?

sobes.tech AI

Answer from AI

PrintWriter and PrintStream are classes for outputting data, but with different features:

  • PrintStream works with byte streams (OutputStream), while PrintWriter works with character streams (Writer).
  • PrintWriter supports specifying character encoding, which is important for correct text handling in different locales.
  • PrintWriter has methods for automatic buffer flushing (autoFlush) when calling println, printf, and format.
  • PrintStream does not support encoding directly and is outdated for text output.

Example of creating a PrintWriter with specified encoding:

PrintWriter writer = new PrintWriter(new OutputStreamWriter(System.out, StandardCharsets.UTF_8), true);
writer.println("Sample output with PrintWriter");

Thus, for text output, it is preferable to use PrintWriter, especially if encoding is important.