Home/ Questions/Q 78607
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-10T21:00:50+00:00

Is there a more concise/standard idiom (e.g., a JDK method) for piping an input

  • 0

Is there a more concise/standard idiom (e.g., a JDK method) for ‘piping’ an input to an output in Java than the following?

public void pipe(Reader in, Writer out) {     CharBuffer buf = CharBuffer.allocate(DEFAULT_BUFFER_SIZE);     while (in.read(buf) >= 0 ) {         out.append(buf.flip());         buf.clear();     } }

[EDIT] Please note the Reader and Writer are given. The correct answer will demonstrate how to take in and out and form a pipe (preferably with no more than 1 or 2 method calls). I will accept answers where in and out are an InputStream and an OutputStream (preferably with a conversion from/to Reader/Writer). I will not accept answers where either in or out is a subclass of Reader/InputStream or Writer/OutputStrem.

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. IOUtils from the Apache Commons project has a number of utilily methods that do exactly what you need.

    IOUtils.copy(in, out) will perform a buffered copy of all input to the output. If there is more than one spot in your codebase that requires Stream or Reader/Writer handling, using IOUtils could be a good idea.

    • 0