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Tip of the Day
Language: JavaBeans
Expertise: Beginner
Mar 6, 2000

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Reloading Java Classes in JSP Development

Question:
How can I force a reload of a JavaBean that is being used in a JSP page? The problem is I am developing a JSP-based Web application and I need to constantly modify my Java classes and JavaBeans. All the changes I make are invisible to the server unless I restart the server.

Answer:
Making changes to Java support classes visible to a JSP page that uses them is dependent on the JSP/Servlet engine you are using. At the moment, the JDSK and the Apache Tomcat JSP/Servlet engine require a server restart in order for a JSP page to use the newly compiled version of a Java class.

However, changes to a JSP page are reflected after a simple page reload from a browser. This situation is expected to change in future versions of Tomcat. Commercial JSP servers probably have specific ways of dealing with this problem, but I am not acquainted with them.

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