<div class="__aliyun_email_body_block"><div  style="font-family: Tahoma, Arial, STHeitiSC-Light, SimSun"><div  style="clear: both;"><span >Referencing jddarcy's 8369312: Refactor Float.toHexString() to avoid use of regex (<a  href="https://github.com/openjdk/jdk/pull/27780" target="_blank">https://github.com/openjdk/jdk/pull/27780</a>), we can further eliminate the regex and StringBuilder in Double.toHexString to improve performance.</span></div><div  style="clear: both;"><span ><br ></span></div><div  style="clear: both;"><span >To make my proposal easier to understand, I've prepared a draft PR: <a  href="https://github.com/openjdk/jdk/pull/27811" target="_blank">https://github.com/openjdk/jdk/pull/27811</a></span></div><div  style="clear: both;"><br ></div><div  style="clear: both;">-</div><div  style="clear: both;">Shaojin Wen</div></div></div>