How to create top level classes

what is the meaning of top level classes. and how to create toplevel classes.

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Release memory for nested top-level classes

Hello experts.
I have a top-level class which consists of several static methods. Inside such a method I create several new instances of a nested top-level class inside my original class. Later I want to release one of these instances i.e. destroy instance and free memory. How can I do that?
Thanks.

sure, but I do not see any references to this nested top-level class. With "Releasing" I mean something like directly assigning a NULL value to the nested top-level clas in order to enable GC.
But as I said there are no references and while monitoring the memory I see that the GC does not collect some memory. (I know that GC is not reliable, but after ten attempts of this scenario the memory allocation is equal the whole time).
I guess the GC does not work with classes, but the classloader. But how can I control releasing memory in this scenario?
Any further hints?

Declaring top level classes instead of subclasses

I seem to have misunderstood something very basic.
It's always better, where possible, to declare the top-level class instead of the sub-class, right?
Ok, then why do I have the following problem?
I declare, from the JavaMail API the following:
Message theMessage = new MimeMessage(session);instead of declaring directly the subclass like this:
MimeMessage theMessage = new MimeMessage(session);but when I use a method which is only found in the MimeMessage class I get a compile error.
[javac] 189. theMessage.setSubject(subject, "iso8859_1");
[javac] <-------------------------------->
[javac] *** Error: No match was found for method "setSubject(java.lang.String, java.lang.String)".
Have I really misunderstood something so basic?? Surely the compiler knows that theMessage is an instance of MimeMessage??
Any clear explanation to explain why I get this compile error would be gratefully received. I have been faithfully declaring top-level classes instead of subclasses in my code, but if the compiler doesn't let you do so, then what's the point?

Ok, my confusion was started by an article on the
Collection classes which stated that:
Map theMap = new HashMap(); was better
programming practice.
Yep.
But the Map class is an Interface, right? - Whereas
Message is a normal class with subclass MimeMessage.
I think that's where my confusion started.Well, this isn't really a class vs. interface difference. It goes to which class (or interface) is the "highest" (closest to Object) and still has all the public interface you need.
There are cases where you'll declare a variable to be of a base class type like Message.
You just need to get into the habit of separating the left side of the = from the right side. On the left, you put the bare minimum that completely meets your needs. You say, "I need a List" or "I need a Map" or "I need a SortedMap" (a subinterface of Map) or "I need a Message" or "I need a MimeMesage".
Then, on the RHS =, you decide which particular class best implements the public interface that you said you need (by declaring it on the LHS). "For my Map, I'll use a HashMap." "For my Message, I'll use a MimeMessage." "For my MimeMessage, I'll use a MimeMessage".

How to enable "top level navigation " in portal

Hi all,
I am unable to see the "top level Navigation" once I logged on to portal
Previously I was able to see that
I performed the following steps thats the reason why I am unable to see "top level navigation"
1 Logged on to portal
2 Content administration
3 Expanded Poratl Content
4 Expanded Content Provided by SAP
5 Expanded End User Content
6 Expanded Standard Poratl Users
7 Selected "Default Frame work Page"
8 In that selected Top Level navigation Iview and the iveiw properties I changed the property "Number of Display Levels " to "0" and choose save
As I have set "Number of Display Levels" to "0" I am unable to see "top level Navigation" Now,I want to change it to 2 for that I need to see the Content Administration role in the "Top Level navigation" Can anyone help me out how to enable "Top level Navigation"
Thanks in advance

undo the changes what you have done.
after you logon to the portal try the url below...this should take you to content admin directly from there modify the framework page and reset the property of TLN
http://yourserver:port/irj/servlet/prt/portal/prtroot/com.sap.portal.pagebuilder.IviewModeProxy?iview_id=pcd%3Aportal_content%2Fadministrator%2Fsuper_admin%2Fsuper_admin_role%2Fcom.sap.portal.content_administration%2Fcom.sap.portal.content_admin_ws%2Fcom.sap.portal.portal_content&iview_mode=default
Thanks
GLM

How to create an object class programmatically?

Guys,
I need your help. If possible with a simple example of how to do it.
I need to create an aplication that read an specification of a repository type from a file and then creates it inside my BEA Repository. The problem are few:
1 - How to Create an Object Class programmaticaly?
I looked at documentation of ObjectClassOps but havent figured out how to do it.
2 - How to Create a Property Definition programmaticaly?

Sorry, ITypeManager only exists in 9.2. If you are working on 8.1, then the previous example becomes:
RepositoryManager repositoryMgr = RepositoryManagerFactory.create();
//connect to the repository
repositoryMgr.connect();
//get ObjectClassOps
ObjectClassOps ocops = repositoryMgr.getObjectClassOps();
ID repId = new ID();
repId.setRepositoryName(repositoryName);
PropertyDefinition[] pds = new PropertyDefinition[1];
pds[0] = new PropertyDefinition(repId, "stringProp", null, Property.STRING, false, false, false, false, false, null);
ObjectClass oc = new ObjectClass(repId, "myType", null, pds);
oc = ocops.createObjectClass(oc);

How to create a container class for 2 object?

I use JDK to create 2 objects, one is Customer and one is Book. I need to enqueue these 2 objects, but they canot share the same queue class. Some one told me that I can create a container class for these 2 objects but I don't know how to create it. Can some one tell me how to create the container class?

I use JDK to create 2 objects, one is Customer and one
is Book. I need to enqueue these 2 objects, but they
canot share the same queue class. Some one told me
that I can create a container class for these 2
objects but I don't know how to create it. Can some
one tell me how to create the container class?
class CustomerBook{
Book m_book;
Customer m_customer;
pulbic CustomerBook (Customer customer, Book book){
m_book = book;
m_customer = customer;
}If you want to create a class that represents one customer and many books, do this:
class CustomerBooks{
Vector m_books;
Customer m_customer;
pulbic CustomerBook (Customer customer){
m_books = new Vector();
m_customer = customer;
public void addBook (Book book){
m_books.addElement (book);
public void displayBooks (){
//I assume the Book class has a toString method or something similar
for (int i = 0;i < m_books.size();i++){
System.out.println ("book: "+((Book)m_books.elementAt(i)).toString());

Re: How to create More two class with one object

haii,
         i have small information How to create More two class with one object,
bye
bye
babu

Hello
I assume you want to create multiple instance of your class.
Assuming that you class is NOT a singleton then simply repeat the CREATE OBJECT statement as many times as you need.
TYPES: begin of ty_s_class.
TYPES: instance   TYPE REF TO zcl_myclass.
TYPES: end of ty_s_class.
DATA:
lt_itab      TYPE STANDARD TABLE OF ty_s_class
                 WITH DEFAULT KEY,
ls_record TYPE ty_s_class.
DO 10 TIMES.
    CLEAR: ls_record-instance.
    CREATE OBJECT ls_record-instance.
    APPEND ls_record TO lt_itab.
ENDDO.
Regards
Uwe

What is top level class declaration in java?

What is top level class declaration in java?

The declaration of a class that's not nested inside any other class.

Top level class ?

hi,
i am preparing the sun certified java progammer, there's some questions involving "top level class", i don't understand what is a top level class ? can anyone give me some information about it ? is it a class at the top of a package hierarchie like class Object ????
thanks for your help

hi,
i am preparing the sun certified java progammer,
there's some questions involving "top level class", i
don't understand what is a top level class ? can
anyone give me some information about it ? is it a
class at the top of a package hierarchie like class
Object ????No. See
http://java.sun.com/docs/books/jls/second_edition/html/packages.doc.html#26783
Jim S.

How to create TOP include?

Hi,
How to Create TOP include?Because i want to move all data declarations into TOP include?
Thanks,
sairam

Hi ,
in SE38,
Right after your report statement, type INCLUDE ZXXXXTOP and double click on it , it will ask for creation of a new object , say yes and then it will be created . next copy all the data declarations and paste it in that TOP include and activate it.
in SE80 , when you create a program, you will get a popup saying PROGRAM ZXXX, and one option will be there for creating it with TOP Include , tick mark that and save it, it will create a program with a top include .
Reward if helpful ,
Regards,
Ranjita

What makes a class a "top-level" class?

1.
2.    public static int getThis() {
3.      int x = 4;
4.      int y = 5 * x;
5.      return y;
6.    }
7. }
8.
9. public class NetGro extends ToNet {
10.    public static void main(String args[]) {
11.      int z = getThis();
12.      System.out.println("Z = " + z);
13.    }
14. }At line 1 of this program, ToNet "can only be declared as public or the default of no modifier" (not private or protected) because it's a "top-level class." What makes ToNet a "top-level class?"

A class or interface is 'Top-Level' if it is not nested inside another class or interface.
Otherwise the class would not be visible... Private and Protected for classes and interface only make sense within another class or interface as inner classes or interfaces.
Hope that helps...

How to create 3 levels of Top Level Navigation?

Hi
I have a requirement to create 3 levels of TLN in this manner:
Role A
RoleAFolderA | RoleAFolderB
RoleAFolderAViewA | RoleAFolderBViewB
In the help, it says I can have only 2 levels max. How can I configure the TLN to display the third level too?
If this is not possible, what is a work around?
Thanks
Manoj

HI,
Check if this can help you.
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/dae78be4-0601-0010-c9ab-c0b8d86fac07
Regards,
Harini S

How to Delete Top Level Folder

I have a number of files in a hierarchy of folders and I wish to delete the top level folder but leave in place all the sub folders and files contained therein. There are only folders (no files) under the top level folder. Specifically, I do not want to just select and drag and drop all the subfolders.
Any help on how to do this appreciated.

First, to clarify the term - there are traditional VS projects (C# project, VB project, etc.) and with Team Foundation there are now Team Projects. Given the question, I take it you mean team projects (as created with the "New Team Project" option and going through the Project Creation Wizard).
When you create a team project called "foo", the folder for that project (assuming you had it create a folder during the Project Creation Wizard, which is the default) will be called $/foo. Based on your question, I take it you're referring to a folder called "bar" that would be at server path $/foo/bar since it's part of the "foo" team project.
The easiest way to rename or delete such a folder would be to bring up the Source Control Explorer (View | Other Windows | Source Control Explorer) and navigate to that folder. You'll want to make sure that you have the folder in your local workspace (this is a limitation when have in V1) so you may want to right-click on "bar" and do a "get latest version" first. If you don't already have it mapped, you'll be prompt to pick a local path to map it to.
When you right-click on the folder "bar" (once you have it in your workspace), among the entries in the context menu will be Delete, Rename (for the "rename to oranges" case), and Move (for "move it to another folder"). Note that each of these pends the operation on the workspace, and you'll need to check in before the change is committed to source control.
tiny screen shot: http://static.flickr.com/29/55040912_e3190835e6.jpg

How to connect top level domain database to subdomains

Created subdomains for the top level domains. Need to learn
how can we connect centralized database in the top level domain
with the subdomains code in coldfusion.

If you're using EOP and your goal is to block stuff coming from a certain geographic area then you need to go to your exchange admin center select Protection>content filter>Default Policy>International Spam>Filter email messages sent from the
following countries or regions

How to hide Top Level Navigation?

Hi,
I created a quicklink for an iview.
I am able to call the iview from IE window using the quicklink.
But it displays the top level navigation (Company Logo, Welcome message, Logoff, Role tabs,...).
How do I hide this?
Thanks
Sundar

Hi Vinit,
Your solution is working when I clicked the preview button in iview edit window.
But when I try to open the iview using Quicklink with external IE window, it shows the MastHead, TLN.
It is not hiding the MastHead and TLN.
Thanks
Sundar

How to create top level classes

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