java - Tomcat can be hot deployed, why does it still prompt hot code replace failed?

Question

Answer 1

Check if there are any test cases before running. Hot deployment needs to wait until all tasks are completed

Answer 2

Make sure no other application is occupying tomcat

Answer 3

Don’t you have the habit of reading English error messages? . . The writing makes it clear that if the modified method name or code compilation is wrong, it cannot be hot replaced.