JSP - Prevent auto creation of JavaBean

Is there is a directive which i can use in JSP to prevent the <useBean> tag auto creating a new instance of a java bean if it cannot be found in the session? As i want to manage where the javaBean is created.
Thanks
Ian

Hi lan
its simple following code will solve ur problem
<useBean id="classId" type="className "
scope="session" />
it will first check classId in specified scope an if
its not not found it will throw
java.lang.InstantiationException. you can catch this
exception do whatever u wantHow come ? Unless you had an unconditional throws in the bean constructor, a java bean would be created if not found in session scope.
To the OP's question, you should probably write a custom tag that replicates the <jsp:useBean/> tag
ram.

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