Applying Private & Protected methods inside JSP

I am trying to apply (or copy) codings from Servlet into JSP.
One of the issue that I encountered was bringing Private and Protected methods that were listed inside the Servlet class (this case: public abstract class CatalogPage).
If I only copy everything inside "Public void doGet", JSP would not work.
1) My question is, is it better approach to apply Private and Protected method beside wrapping around with ( <%! %> (with !)) (like below)?
I think I heard about using " ! " for private methods somewhere in the internet..
Here is what I have at JSP.
<%!
Private CatalogItem[] items;
Private String[] itemIDs;
private String title;
protected void setItems(String[] itemIDs) {
protected void setTitle(String title) {
%>
<%
if (items == null) {
response.sendError(response.SC_NOT_FOUND,
"Missing Items.");
return;
%>
2) Is there any other ways I could make the functionality of Private and Protected methods
work inside the JSP's <% %>?
Thank you.
Here is the original Servlet code.
public abstract class CatalogPage extends HttpServlet {
private CatalogItem[] items;
private String[] itemIDs;
private String title;
protected void setItems(String[] itemIDs) {
    this.itemIDs = itemIDs;
    items = new CatalogItem[itemIDs.length];
    for(int i=0; i<items.length; i++) {
      items[i] = Catalog.getItem(itemIDs);
protected void setTitle(String title) {
this.title = title;
public void doGet(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException {
if (items == null) {
response.sendError(response.SC_NOT_FOUND,
"Missing Items.");
return;
response.setContentType("text/html");
PrintWriter out = response.getWriter();
String docType =
"<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0 " +
"Transitional//EN\">\n";
out.println(docType +
"<HTML>\n" +
"<HEAD><TITLE>" + title + "</TITLE></HEAD>\n" +
"<BODY BGCOLOR=\"#FDF5E6\">\n" +
"<H1 ALIGN=\"CENTER\">" + title + "</H1>");
CatalogItem item;
for(int i=0; i<items.length; i++) {
out.println("<HR>");
item = items[i];
// Show error message if subclass lists item ID
// that's not in the catalog.
if (item == null) {
out.println("<FONT COLOR=\"RED\">" +
"Unknown item ID " + itemIDs[i] +
"</FONT>");
} else {
out.println();
String formURL =
"/servlet/coreservlets.OrderPage";
// Pass URLs that reference own site through encodeURL.
formURL = response.encodeURL(formURL);
out.println
("<FORM ACTION=\"" + formURL + "\">\n" +
"<INPUT TYPE=\"HIDDEN\" NAME=\"itemID\" " +
" VALUE=\"" + item.getItemID() + "\">\n" +
"<H2>" + item.getShortDescription() +
" ($" + item.getCost() + ")</H2>\n" +
item.getLongDescription() + "\n" +
"<P>\n<CENTER>\n" +
"<INPUT TYPE=\"SUBMIT\" " +
"VALUE=\"Add to Shopping Cart\">\n" +
"</CENTER>\n<P>\n</FORM>");
out.println("<HR>\n</BODY></HTML>");
null

I am trying to apply (or copy) codings from Servlet into JSP.What benefit is there to copying code from a servlet to a JSP? Is the servlet "working"?
One of the issue that I encountered was bringing
Private and Protected methods that were listed inside
the Servlet class.
If I just copy everything inside "Public void doGet",
JSP would not work.Sounds like you need a redesign.
1) My question is, is it better approach to apply
Private and Protected method beside wrapping around
with ( <%! %> (with !)) (like below)?
I think I heard about using " ! " for private
methods somewhere in the internet..Never heard of such a thing. Please cite the link if you have it.
Here is what I have at JSP.Please, I can't look. This is wrong on so many levels. You've got scriptlet code, CSS style stuff, embedded HTML in one unmaintainable mess.
Learn JSTL and CSS. Do not, under any circumstances, put scriptlet code in your JSP.
The right way is to use the JSP purely as display and keep those protected and private methods on the server side where they belong. Have the JSP make a request to another object to do some work, get the result, and displa it.
%

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Hi!
Consider this case:
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private static class A1 extends B {
// this would resolve the error:
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OK, my mistake, I missed the part about different
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However the following further inner class of A
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>
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Inheritance and access control - "private protected"

I'm reopening an old topic, seems to have been last discussed here 2-3 years ago.
It concerns the concept of restricting access to class members to itself, and its subclasses. This is what "protected" does in C++ and "private protected" did in early versions of the Java language. This feature was removed from Java with a motivation along the lines of not being "simple", and "linear" (in line with the other access modes, each being a true subset of the next). Unfortunately, the article which explained Sun's position on this keyword combination seems to have been removed from the site, so I haven't been able to read its original text.
But regardless of simplicity of implementation or explaining Java's access modifiers to newbies, I believe it is a fundamental part of OO programming for such an access mode to exist. The arguments for having the standard "private" mode in fact also apply for having a C++-style "protected" mode. (Arguing that classes within a package are related and it therefore doesn't hurt to also give them access to Java's "protected" members, is equally arguing that "private" is unneccessary, which noone of course believes.)
The whole concept of inheritance and polymorphism and encapsulation builds on the access modes private, protected, and public (in the C++ senses). In Java the "package" concept was added - a nice feature! But I see no justification for it to negate the proper encapsulation of a class and its specializations.

What effect upon inheritance other than hiding members
from subclasses is there?
None. And I cant think of another declaration that prevents members from being inherited but private.
Of course the onus comes on the programmer with Java's
definition of "protected" - but
1) there is rarely a single programmer working within
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The point was the package is a unit which does not hide from itself. Just like all methods within a class can see each other, all classes within a package can, and all packages within a program can.
2) it muddies the encapsulation in the design - when
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Reopened topic "private protected" modifier

I respond to reply in thread <http://forums.sun.com/thread.jspa?threadID=503004>. There I posted following:
I would like to express that something like "private protected" is really missing. I develop packages for modelling of engineering structures. I have real and clear example why I need this. I was very surprised that I cannot open fields for subclasses only! Therefore I have to use "private" because I dont want to see these fields from another classes. It does not make sense in this way.
There is my example:
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I like Java, but this is wrong. Why it is not possible?

kitnarf wrote:
There is my example:
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Given that I can get to private members if I want but it just isn't convenient to do so. So all you are doing is providing encouragement to someone to do the right thing. The best way to do that is correctly design the classes in the first place and provide correct and complete documentation. That works much better that trying to find ways to restrict it.

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<tr>
<td width="100%">
<table width="260" border="0" cellspacing="0" cellpadding="1">
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<tr>
<td align="right" nowrap class="login-user"><p>Password: </p>
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<td align="left" valign="top">
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The entries in my server.xml are following:
<Connector port="8080" maxHttpHeaderSize="8192"
maxThreads="150" minSpareThreads="25" maxSpareThreads="75"
enableLookups="false" redirectPort="8443" acceptCount="100"
connectionTimeout="20000" disableUploadTimeout="true" />
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maxThreads="150" scheme="https" secure="true"
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Please note I am using javascript to go from secure "https" to "http" once the user has successfully logged in The javascript code is as below:
top.location.href="http://localhost:8080/qtv/index.html." ;
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http://java.sun.com/j2se/1.3/docs/api/java/util/ArrayList.html#removeRange(int,%20int)
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In this codefinal class myClass extends java.util.ArrayList {
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You have a member variable called array which is an ArrayList
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http://sepwww.stanford.edu/sep/josman/oop/oop1.htm

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Kal.

Hi.. Thanks for ur reply.
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Access to protected method is ot allowed

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sas

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matt

Methods in JSP (repetitive things)

I had posted this question before but didnt solve me problem.Here I ask it again.
I alway thought that JSP should be used for display purpose.In that what to do if some lines of code are repeated many number of times,and since I cant have a method inside a JSP then I am wondering the solution will be to create a class and then write the output to the out variable.
Please help.
Thanks
MS

Coding to generate multiple table rows (or similar function) in a JSP should still be considered presentation-layer stuff. In other words, a method to repeatedly generate table rows is a display purpose, generally speaking. That said, custom tags go a long way to keeping your JSPs clean and pretty.

How to get protected method ?

I thought i can get protected method of my class when calling a Class.getMethod(String, Class []) in another class which inside the same package. However, it seem that i can't do that because it throw me a NoSuchMethodException when the method was protected. I thought all classes in same package can access the protected methods or fields of each other ??? Why ?
So, how i'm able to get the protected method in runtime ? (Hopefully no need to do anything with the SecurityManager)

It is working
Pls try the following program ...
public class p1 {
public static void main(String as[]) {
p2 ps2 = new p2();
ps2.abc();
class p2 {
protected void abc() {
System.out.println("Hello");
regards,
namanc

Applying Private & Protected methods inside JSP

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