java - IDEA restarts tomcat after modifying the code, but it still seems to be the previous code

Question

I don’t know what’s going on. Every time after restarting the code, when testing the interface, the results obtained are still the results of the previous version. I would like to know what operations need to be done after modifying the code in IDEA to change the code. Update to tomcat.

Answer 1

Was it not deployed properly when deploying TOMCAT? How was it deployed? Was it developed using a framework