为什么每次更改/编辑 java servlet 代码时都需要重新启动 Tomcat Apache 服务器

Question

I am coding my basic servlet programs in notepad but every time I make changes in my java file and after compiling it, I need to restart my tomcat apache to see that changes on browser. Is there any solution for this as I have to work on project and will need changes frequently. I have tried making service automatic from services manager.

Answer 1

The changes made in Servlet/Java code will not reflect itself, we have to re-compile the Java code and again deploy the application to the Tomcat server. Only after these work server will be able to get the modified values.

If you don't want to do it manually then you can set reloadable="true" in the context.xml file. Now Catalina (tomcat server) will monitor classes in /WEB-INF/classes/ and /WEB-INF/lib for changes, and automatically reload the web application if a change is detected. This feature is very useful during application development, but it requires significant runtime overhead and is not recommended for use on deployed production applications. That's why the default setting for this attribute is false. You can use the Manager web application, however, to trigger reloads of deployed applications on demand.