title: What's the difference between CLASSPATH "bootstrap entries" and "user entries" in Eclipse?
body: <p>Eclipse has a Run Configurations screen with a Classpath tab. </p>
  
  <p>I had some jars listed in the "user entries" section of this tab but my project did not run until I duplicated those jar files into the "bootstrap entries" section. After the jars were listed in both sections, the project ran successfully.</p>
  
  <p>Why? </p>
  
  <p>What's the difference between these two different categories of Classpath settings?</p>