title: Run Tomcat6-Java6 WebApps in Tomcat6-Java7/8
body: <p>I have Tomcat6 running with Java6. The WebApp that it runs is compiled with Java 6 as well.</p>
  
  <p>At the time being, compiling the WebApp with Java7/8 is not possible, and neither it is migrating to Tomcat7/8. The only possible move is to change Tomcat6's JRE to Java7/8.</p>
  
  <p>Will it improve performance in any way to run that same Tomcat6 with Java7/8? Or, on the contrary, will it cause trouble and/or degrade performance?</p>
  
  <p>Thanks in advance and best regards.</p>