title: How to use Java version 15 in Eclipse 2020-09
body: <p>I'm trying to run the new Java 15 features under Eclipse 2020-09.</p>
  <p>I have installed OpenJDK 15 and set it under &quot;Installed JRE&quot;:</p>
  <p><a href="https://i.stack.imgur.com/VGwYQ.png" rel="noreferrer"><img src="https://i.stack.imgur.com/VGwYQ.png" alt="installed jres" /></a></p>
  <p>Nevertheless I cannot set this version as compiler version (only till version 14):</p>
  <p><a href="https://i.stack.imgur.com/qaQmP.png" rel="noreferrer"><img src="https://i.stack.imgur.com/qaQmP.png" alt="Compiler level" /></a></p>
  <p>What am I doing wrong?</p>