title: How to Use Java 8 settings to build project in eclipse 4.18(2020-12)
body: <p>*Due to some project requirements I &quot;have&quot; to use eclipse 4.18 (2020-12) which uses Java 11 by default and is mandatory to start.</p>
  <p>But my entire project is/was written in Java 1.7 earlier. Now , in my mac i have both java 1.8 and 11 installed also my eclipse settings are such shown below.
  I have made sure removed all java 11 references in my eclipse and made the project and workspace configure to take the 1.8 jdk and run at 1.7 compiler level.*
  <em>but when i run ,project --&gt;clean--&gt;build, i run into the JaxB missing in java 11 ( in java 11 JAXB was removed and my project uses jaxB extensively) This is known.</em></p>
  <p><strong>So i am wondering what am i missing that my projects are still building my project with java 11 and not java 1.7 (using jdk 1.8 configured).
  Please help.. stuck on this since some days.</strong></p>
  <p><a href="https://i.stack.imgur.com/tf18f.png" rel="nofollow noreferrer">machome</a></p>
  <p><a href="https://i.stack.imgur.com/2c2on.png" rel="nofollow noreferrer">Eclipse Compiler setting-1</a></p>
  <p><a href="https://i.stack.imgur.com/jra1l.png" rel="nofollow noreferrer">Eclipse Setting Execution Envs</a></p>
  <p><a href="https://i.stack.imgur.com/oHSIP.png" rel="nofollow noreferrer">Eclipse installed JRE's</a></p>
  <p><a href="https://i.stack.imgur.com/0yzwe.png" rel="nofollow noreferrer">Eclipse Project specific setting</a></p>
  <p><a href="https://i.stack.imgur.com/C6YIW.png" rel="nofollow noreferrer">Java 11 JaxB error</a></p>