My first contribution to the #OpenJDK open source project, hence to #Java18 itself, improves performance of InputStream::transferTo approximately by factor 2 to 5 – at least for file-to-file transfers (socket-based transfers will follow in a later contribution). Get an in-depth introduction to this project, why I did it, how I did it, what tricks it does under the hood, and see each line of source code. A great way to learn about the difference between old-school and modern Java programming, BTW!
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Head Crashing Informatics 