Make PrintStream Faster
PrintStream is useful for outputting line-oriented data.
However, the obvious constructor suffers from a potential performance
problem: every call to print() is followed by an automatic flush.
autoflushing prevents standard write buffering from providing its
usual performance benefits, even if the stream given to the
PrintStream is a buffered one, like BufferedOutputStream. When PrintStream is used as part of a
batch processing application that outputs a large amount of data, this
problem can cause output to be much slower than it needs to be.
The solution is simple: use the two-parameter constructor and pass
false for the second parameter. That disables the
autoflush behavior and lets write buffering speed up your output.
Last modified on 16 May 2001 by AO
Copyright © 2020 Andrew Oliver