I am editing JSP files which are residing directly inside tomcat/webapps/myapp/WEB-INF, but to see the changes, I have to restart the server. As far as I know,
tomcat/webapps/myapp/WEB-INF
Open your context.xml file in your META-INF folder and set antiJARLocking to false.
context.xml
antiJARLocking
Your directory tree should be as follows:
Web > META-INF > context.xml