title: upgrade eclipse to java 8
body: <p>I am trying to update my eclipse environment to java 8. I installed the jdk and jre version 8.  I also did this:</p>
  
  <p><a href="https://wiki.eclipse.org/JDT/Eclipse_Java_8_Support_For_Kepler" rel="noreferrer">https://wiki.eclipse.org/JDT/Eclipse_Java_8_Support_For_Kepler</a></p>
  
  <p>then in project -> properties -> java build path -> JRE system libraries -> edit -> execution environment -> JavaSE-1.8(unbound) which is the only option that has java 8 in its name. but when I select it it says : No JREs in workspace compatible with specified execution environment: JavaSE-1.8</p>