aspose file tools*
The moose likes Web Component Certification (SCWCD/OCPJWCD) and the fly likes Can somebody explain to me the beanName attribute? Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login


Win a copy of Java 8 in Action this week in the Java 8 forum!
JavaRanch » Java Forums » Certification » Web Component Certification (SCWCD/OCPJWCD)
Bookmark "Can somebody explain to me the beanName attribute?" Watch "Can somebody explain to me the beanName attribute?" New topic
Author

Can somebody explain to me the beanName attribute?

alzamabar
Ranch Hand

Joined: Jul 24, 2002
Posts: 379
Hi, I found a question related to <jsp:useBean> attributes and one of the attributes was beanName. I looked at the specs and I found the following:


The name of a bean, as expected by the instantiate method
of the java.beans.Beans class.
This attribute can accept a request-time attribute expression
as a value.



Does anyone know what does this mean?


Marco Tedone<br />SCJP1.4,SCJP5,SCBCD,SCWCD
Colin Fletcher
Ranch Hand

Joined: Sep 10, 2004
Posts: 200
From The Java Boutique :


The beanName attribute of the <jsp:useBean> tag is used to instantiate serialized Beans rather than creating new instances from a class file. If the Bean doesn't exist in the scope, then the beanName attribute is passed on to java.beans.Bean.instantiate(), which will instantiate the Bean for the class loader. It first assumes that the name corresponds to a serialized Bean file (identified by the .ser extension) in which case it will bring it to life, but if it can't find or invoke the serialized Bean it will fall back to instantiating a new Bean from its class.


SCJP 1.4 SCWCD 1.4
alzamabar
Ranch Hand

Joined: Jul 24, 2002
Posts: 379
Thank you. That was very useful.
Colin Fletcher
Ranch Hand

Joined: Sep 10, 2004
Posts: 200
Your Welcome. :-)
Durgaprasad Guduguntla
Ranch Hand

Joined: Oct 20, 2003
Posts: 99
Further you can use JSP Expression (<%=) for beanName attribute which is not possible with class attribute. You need to have both beanName and type attributes for jsp:useBean tag.

Thanks,

Durga


Thanks,<br />Durgaprasad<br />SCJP1.4, SCWCD1.4, SCBCD1.3,<br />SCEA
Durgaprasad Guduguntla
Ranch Hand

Joined: Oct 20, 2003
Posts: 99
This linkexplains further.

Thanks,

Durga
 
I agree. Here's the link: http://aspose.com/file-tools
 
subject: Can somebody explain to me the beanName attribute?
 
Similar Threads
difference between Class attribute and beanName attribute of jsp:useBean
q on jsp:useBean
J2EE Certificate qs on useBean
<useBean> doubt
Question ID :997810765481