Why are my JSP changes are not reflected without restarting Tomcat?

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In the tomcat docs, see the development setting. It must be set to true in order to have jsps reloaded.

development – Is Jasper used in development mode? If true, the frequency at which JSPs are checked for modification may be specified via the modificationTestInterval parameter.true or false, default true.

This is in your CATALINA_HOME/conf/web.xml

Additionally, if you need to refresh a jsp in a production environment without restart, you can go to CATALINA_HOME/work/Catalina/localhost/contentName/org/apache/jsp and delete the your_jsp.java and your_jsp.class files. They will be recreated the next time they are accessed.

Edit: after providing your configuration, and comment about not refreshing the content, I have another though: clear your browser cache, or open the page from another browser.

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