Part 2 : can i create an instance of ArrayList ?

Question

Hey thanks so much for the reply.
Let me tell you the exact scenario. I'm actually developing a struts-application. Hope I can get some help here too.
I have:
1. login.jsp-where user logs in.
-I have a userid and a password as default values for each unique user.
Where should i store these details -in HashMap??
-How can I display error messages if userId/passWord is invalid on login.jsp page ??
2. confirmation.jsp-on successful login, he's shown his details:
YOur first name: .........
Your last name: ........ etc.
-Here I can't use bean:write tag to read from form-bean.
- how do i display it here without using a scriptlet ?
3. LoginAction.java
-Here i will get userId and passWord from LoginFormBean.java setter
and getter methods.
-For all validations' results, should i call a boolean getUserDetails() method from form-bean, wherein i can map values(first name, last name etc ) to each key (userid) ?
i can use methods like:
if (isValidUserId && isValidPassWord )
LoginValidateUtil.getUserDetails();
return mapping.findForward("success");
But, can I assign many values to a single key using Map ?
4. LoginFormBean.java
-Here should I have to use set/getUserDetails() ?
-If so, how do I use Map there?
I want to have userId as the only key to which i can map values and not password.
5. LoginValidateUtil.java
-Here all validations are defined and boolean result is passed to LoginAction.java.
Hope you got what I meant.
Please tell me if i am right in this approach...
Thanks in advance,
sanlearns

Answer 1

1. login.jsp-where user logs in.
-I have a userid and a password as default values for each unique user.
Where should i store these details -in HashMap??
u can do that by using session
-How can I display error messages if userId/passWord is invalid on login.jsp page ??
if resultset have not a single row then goto for show the error message
2. confirmation.jsp-on successful login, he's shown his details:
YOur first name: .........
Your last name: ........ etc.
Retrive the value from session if u establish the session
-Here I can't use bean:write tag to read from form-bean.
if u use session then u need not to do that
- how do i display it here without using a scriptlet ?
3. LoginAction.java
-Here i will get userId and passWord from LoginFormBean.java setter
and getter methods.
-For all validations' results, should i call a boolean getUserDetails() method from form-bean, wherein i can map values(first name, last name etc ) to each key (userid) ?
i can use methods like:
if (isValidUserId && isValidPassWord )
LoginValidateUtil.getUserDetails();
return mapping.findForward("success");
But, can I assign many values to a single key using Map ?
4. LoginFormBean.java
-Here should I have to use set/getUserDetails() ?
-If so, how do I use Map there?
I want to have userId as the only key to which i can map values and not password.
5. LoginValidateUtil.java
-Here all validations are defined and boolean result is passed to LoginAction.java.
Hope you got what I meant.
Please tell me if i am right in this approach...