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Tip: Wrapping Unbuffered Writes to an OutputStreamWriter in Java

OutputStreamWriter uses memory for each call to its write() methods. Learn why you should wrap it in a BufferedWriter.


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Writer w = new OutputStreamWriter(os, "UTF-8");
while (...){
   w.write("something");
}

OutputStreamWriter uses memory for each call to its write() methods. This is why it is better to avoid this; if you do multiple writes, you should wrap it in a BufferedWriter, which doesn't use memory at all, like this:

Writer w = new BufferedWriter(new OutputStreamWriter(os, "UTF-8"));

 

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Octavia Andreea Anghel is a senior PHP developer currently working as a primary trainer for programming teams that participate at national and international software-development contests. She consults on developing educational projects at a national level. She is a coauthor of the book "XML Technologies--XML in Java" (Albastra, ISBN 978-973-650-210-1), for which she wrote the XML portions. In addition to PHP and XML, she's interested in software architecture, web services, UML, and high-performance unit tests.
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