Help with Tags JSP

[Marcus]

Under WEB-INF/tags directory there is a file called select.tag.
I viewed the filed and found there are some lines of java codes wrapped within the

Code:

<%! %>:

<%!
...
try {
Object bean = jspContext.findAttribute(beanName);
Method m = bean.getClass().getMethod(methodName, null);
result = m.invoke(bean, null).toString();
...
%>

My question is: why use "!" after the

Code:

<%? Why not directly use <%.... %>>

Thanks.
Marcus

[Eric]

JSP, not client-side javascript.

Please check this link

Greetings.
Eric

[Daniel]

Code:

<%! ... %> i

s referred to as a declaration block.

it can also be written in xml syntax...for example

Code:

<jsp:declaration>
String user_name = new String();
</jsp:declaration

the following is a comment

Code:

<%-- comment --%>

the following is an expression

Code:

<%= expression %>

Say for example, you have a string and it contains a user's name "John Smith" and you want to print it...you can write

Code:

<%= name %> instead or typing <% out.println( name ); %>

Greetings
Daniel