title: change the tomcat version 5.5.26 to 6.0.29?
body: <p>Currently my server is running of the Tomcat 5.5.26 and JDK 1.5.15.<br>
  Now I want to change to tomcat 6.0.29 and JDK 1.6.29.</p>
  
  <p>There was many application running of the current environment so if I can change to new environment the required to compile all the application again and upload on the new environment  or existing war file is working with new environment?</p>