Struts Basic questions and answers
Q: How you will make
available any Message Resources Definitions file to the Struts Framework
Environment?
Ans: The Message Resources Definitions file is a simple *.properties
files and these files contains the messages that can be used in the struts
project. Message Resources Definitions files can be added to the struts-config.xml
file through <message-resources /> tag.
Example:
<message-resources parameter="MessageResources" />
Q: Write code of any Action Class?
Ans: Here is the code of Action Class that returns the ActionForward object.
ExampleAction.java
import javax.servlet.http.*;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
public class ExampleAction extends Action
{public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) throws Exception{
return
mapping.findForward("testAction");
}
}
Struts Objective Questions And Answers
Struts Objective Questions And Answers
Struts Subjective Questions And Answers
Struts Subjective Questions And Answers
Struts Interview Questions And Answers
Struts Interview Questions And Answers
Q. How you will display validation
fail errors on jsp page?
Ans: Following tag displays all the errors:
<html:errors/>
Q. How you will enable front-end validation based on the xml in validation.xml?
Ans: The <html:javascript> tag to allow front-end validation based on the
xml in validation.xml.
Example:
<html:javascript formName="loginForm" dynamicJavascript="true" staticJavascript="true"
/> generates the client side java script for the form "loginForm" as defined in
the validation.xml file. The <html:javascript> when added in the jsp file
generates the client site validation script.
Q: What is RequestProcessor and RequestDispatcher?
Ans: The class org.apache.struts.action. RequestProcessor process the
request from the controller. We can make a sublass of RequestProcessor with our
own version and modify how the request is processed.
A RequestDispatcher object can be used to forward a request to the
resource or to include the resource in a response. The resource can be dynamic
or static.
The pathname must begin with a "/" and is interpreted as relative to the current
context root. Use getContext() method is used to obtain a
RequestDispatcher for resources in foreign contexts. This method returns
null if the ServletContext cannot return a RequestDispatcher.
Q: What are the uses of tiles-def.xml
file, resourcebundle.properties file, validation.xml file?
Ans: tiles-def.xml: is is an
xml file used to configure tiles with the struts application. You can define the
layout / header / footer / body content for your View. See more at The
resourcebundle.properties file is used to configure the message (error/
other messages) for the struts applications.
The file validation.xml is used to declare sets of validations that
should be applied to FormBeans.
Q:What are the disadvantages of
Struts?
Ans: Struts is very robust framework and is being used extensively in the
industry. But there are some disadvantages of the Struts:
a) High Learning Curve Struts requires lot of efforts to learn and master it.
For any small project less experience developers could spend more time on
learning the Struts.
b) Harder to learn Struts are harder
to learn, benchmark and optimize.
Q: What are the difference between <bean:message> and <bean:write>?
Ans: <bean:message>: This tag is used to output locale-specific text
(from the properties files) from a MessageResources bundle.
<bean:write>: This tag is used
to output property values from a bean. <bean:write> is a commonly used
tag which enables the programmers to easily present the data.
Struts Basic questions and answers
