This Pull Requests proposes an implementation for [JDK-8353795](https://bugs.openjdk.org/browse/JDK-8353795): Adding the new method `public static Writer Writer.of(StringBuilder)`, providing a non-synchronized Writer implementation optimized for writing into `StringBuilder`.
A basic test is provided to proof that the new `Writer` behaves as expected. For comparison, the same test is also run against `StringWriter`. ------------- Commit messages: - Removed unused import - Limited to Writer.of(StringBuilder) - Must not change implementation of StringWriter as getBuffer would not reflect current content of internally used Writer - Fixed typo - Do not wrap Writer, but return it as-is - Forward flush() and close() for Flushable and Closeable - Draft: Test for Writer.of(Appendable) - Writer.of(Appendable) Changes: https://git.openjdk.org/jdk/pull/24469/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=24469&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8353795 Stats: 379 lines in 4 files changed: 376 ins; 0 del; 3 mod Patch: https://git.openjdk.org/jdk/pull/24469.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/24469/head:pull/24469 PR: https://git.openjdk.org/jdk/pull/24469
