title: How to update the JRE in Eclipse
body: <p>So, I ran my Projects in <code>Eclipse</code> with a Run Configuration that used the <code>JRE 1.8_40</code>, but I update it to <code>1.8_45</code> and <code>Eclipse</code> says this: </p>
  
  <blockquote>
    <p>Unable to locate executable for jre1.8.0_40</p>
  </blockquote>
  
  <p>Because when I installed the <code>_45</code> version Java told me If  I wanted to clean the system by deleting the old Java Versions, thinking that Eclipse was smart and knew that I update it, but no, now I get that annoying Error.</p>