Storing data

Hi all
Im designing a program to help with booking guets into a small hotel, When a persons details are entered, what would be the best way to store each customers details. Im quite new to java so if what i suggest is a bad idea then please guide me in the correct path.
Im designing a customer class which has the following attributes:
name, address, telNo with all the necessary methods....but what i dont understand is, when a customer is added the details are stored as the variables in the class
what happens when a second customer is added, what happens to the data from the first customer. I need to save this.
any help will be grately appriciated
D_H

Ok, that makes more sense. There was a guy who posted here a while ago who had actually been given a freelance job to write a Java solution, and he had absolutely no clue what he was doing. Just wanted to make sure you're not similar....
You could see it like this. The class is the blueprint for the objects you create from it. You can instantiate any number of objects from a class. Kind of like when an architect creates the blueprints for a house, then a contractor can take them and build a hundred houses based on those blueprints. They will basically all be the same execept for some properties that can be changed, like the color. (I know you guys in the UK like building long rows of similar looking houses so I thought you might appreciate this comparison...)
If you have a class Customer like this
public class Customer{
    private String name;
    public Customer(String n){
        name = n;
    public String getName(){
        return name;
}then you can instantiate multiple objects of that class
Customer cust1 = new Customer("Han Solo");
Customer cust2 = new Customer("Chewbacca");These are separate instances of the same class, each holds it's own data and are completely separate, except thay are based on the same blueprint (class).
Does this make it a bit clearer for you? There's a lot of good books and tutorials on this stuff, but I agree it can be hard in the beginning to get your head around this stuff. Don't worrym if you keep at it it will become trivial.

Similar Messages

SAP paging overflow when storing data in the ABAP/4 memory.

I am trying to create a data source in BI7.0 in the Datawarehousing Workbench. But along the process when i need to select a view i get an error detailed in the following error file extract: Please go through and assist.
untime Errors MEMORY_NO_MORE_PAGING
Date and Time 06.06.2009 14:21:35
Short text
SAP paging overflow when storing data in the ABAP/4 memory.
What happened?
The current program requested storage space from the SAP paging area,
but this request could not be fulfilled.
of this area in the SAP system profile.
What can you do?
Note which actions and input led to the error.
For further help in handling the problem, contact your SAP administrator
You can use the ABAP dump analysis transaction ST22 to view and manage
termination messages, in particular for long term reference.
Error analysis
The ABAP/4 runtime system and the ABAP/4 compiler use a common
interface to store different types of data in different parts of
the SAP paging area. This data includes the
ABAP/4 memory (EXPORT TO MEMORY), the SUBMIT REPORT parameters,
CALL DIALOG and CALL TRANSACTION USING, as well as internally defined
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To store further data in the SAP paging area, you attempted to
allocate a new SAP paging block, but no more blocks were
available.
When the SAP paging overflow occurred, the ABAP/4 memory contained
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To facilitate error handling, the ABAP/4 memory was
deleted.
How to correct the error
The amount of storage space (in bytes) filled at termination time was:
Roll area...................... 8176
Extended memory (EM)........... 13587912
Assigned memory (HEAP)......... 0
Short area..................... " "
Paging area.................... 40960
Maximum address space.......... " "
By calling Transaction SM04 and choosing 'Goto' -> 'Block list',
you can display an overview of the current roll and paging memory
levels resulting from active users and their transactions. Try to
decide from this whether another program requires a lot of memory
space (perhaps too much).
The system log contains more detailed information about the
termination. Check for any unwanted recursion.
Determine whether the error also occurs with small volumes of
data. Check the profile (parameter "rdisp/PG_MAXFS", see
Installation Guidelines).
Is the disk or the file system that contains the paging file
full to the extent that it cannot be increased, although it has
not yet reached the size defined in the profile? Is the
operating system configured to accommodate files of such a
size?
The ABAP processor stores different types of data in the SAP
paging area. These include:
(1) Data clusters (EXPORT ... TO MEMORY ...)
(2) Parameters for calling programs (SUBMIT REPORT ...),
Dialog modules (CALL DIALOG ...) and transactions
(CALL TRANSACTION USING ...)
(3) Internally defined program macros (DEFINE ...)
Accordingly, you should check the relevant statements in a program
that results in an overflow of the SAP paging area.
It is critical when many internal tables, possibly with
different IDs, are written to memory (EXPORT).
If the error occures in a non-modified SAP program, you may be able to
find an interim solution in an SAP Note.
If you have access to SAP Notes, carry out a search with the following
keywords:
"MEMORY_NO_MORE_PAGING" " "
"SAPLWDTM" or "LWDTMU20"
"TABC_ACTIVATE_AND_UPDATE"
If you cannot solve the problem yourself and want to send an error
notification to SAP, include the following information:
1. The description of the current problem (short dump)
To save the description, choose "System->List->Save->Local File
(Unconverted)".
2. Corresponding system log
Display the system log by calling transaction SM21.
Restrict the time interval to 10 minutes before and five minutes
after the short dump. Then choose "System->List->Save->Local File
(Unconverted)".
3. If the problem occurs in a problem of your own or a modified SAP
program: The source code of the program
In the editor, choose "Utilities->More
Utilities->Upload/Download->Download".
4. Details about the conditions under which the error occurred or which
actions and input led to the error.

Hi Huggins,
Maintenance of the Paging File is owned by your basis team.
They should increase this in order for your transaction to process successfully.
Just for your reference, in case the OS used is windows server 2003, paging file value can be checked through;
Right click in the My Computer>properties.
Then go to Advance tab;
Then there should be a performance section, click the settings
Then Advance tab again. The paging file can be seen from there.
(and can be adjusted from there also)
The value of the paging file in general will be dependent with the available RAM from the hardware.
Hope this helps. Thanks a lot.
- Jeff

Why files in Lightroom mobile and files in the creative cloud not the same? idea- one place(stored date) for all application ??????

Why files in Lightroom mobile and files in the creative cloud not the same? idea- one place(stored date) for all application ??????

Lightroom Mobile is not a cloud storage service. You shouldn't treat it as a way of backing up your files. You are merely storing Smart Previews of your files in the cloud space, high-quality JPEGs of your files regardless of their original format on your desktop. The point is that they are there so you can continue editing them in a Lightroom-like environment even while away from your desktop/laptop computer. The files in Lightroom Mobile can only be used in Lightroom Mobile.
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hi there
if i associate my apple id with another email will i lose my icloud data or i will still be able to access all my stored data with the new linked to my apple id email address?
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thanks

After opening the email it shoud of had you enter the Apple ID and password. Using certian web browser's can cause errors. You can adjust securty settings (big pain) or you use another browser. Using Firefox or Safari should do the trick.
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How can i get the time to appear on my stored data in notepad

Hi all,
I was wondering how can i get the time to appear on my stored data in notepad? I saw an example before but i forgotten which example was it.. Any ideas??
holla
Attachments:
TextFile1.txt ‏3 KB

Hi
Im using Labview 8.2. Currently it just shows the data without the time. Im not sure what to do. It works perfectly though. I just want the time to appear on my notepad along with my data
holla
Attachments:
Testing1.txt ‏1 KB
Untitled 231_LV80.vi ‏23 KB

Write / store xml data in Xe and retrieve stored data using pl/sql

Hi to all,
i'm searching a tutorial on:
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I don't want to use other technologies, because i use htmldb and my best practice is with pl/sql.
I was reading an ebook (quite old maybe) however it's about oracle 9 and it's talking about xmltype:
1 - I don't understand if this is a user type (clob/varchar) or it's integrated in Oracle 9 however i will read it (it's chapter 3 titled Using Oracle xmldb).
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Thank you very much Carl,
However my fault is that i've not tried to create the table via sql plus.
Infact i was wrong thinking that oracle sql developer allows me to create an xmltype column via the create table tool.
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Message was edited by:
Marcello Nocito

The table for storing data for infocube and ODS

Hi all:
could you please tell me how to find the table for storing data for infocube and ODS?
thank you very much!

Hi Jingying Sony,
To find tables for any infoprvider go to SE11.
In database table field enter the following
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Has fact table and dimension table
For customized cube - ie cube names not starting with ' 0 '
Uncompressed Fact table - /BIC/F<infocubename>
Compressed fact table - /BIC/E<infocubename>
Dimension table - /BIC/D<infocubename>
For standard cube - ie cube names starting with ' 0 '
Uncompressed Fact table - /BI0/F<infocubename>
Compressed fact table - /BI0/E<infocubename>
Dimension table - /BI0/D<infocubename>
Click on display.
For DSO,
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You use 40 for new table.
Click on display.
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Double click on the name and choose display.
Hope this helps,
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Problem storing date in MS Access using JSP

Hi all,
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<%@page import="java.sql.*"%>
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<HEAD>
<TITLE> </TITLE>
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%>
</BODY>
</HTML>

i hope this can help you
public static String convertToISOFormat(Date dateTime) {
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                + "-"
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Why view have no stored data ? And what is the reason view take more time

Why view have no stored data ? And what is the reason view take more time to query ?
what happen if a view have stored data?

user12941450 wrote:
I want to know the reason that why querying view is slower then querying a normal table?..Untrue.
For example take a table with 2laks record and a view for that table.
If i make a query like( Select name,address from table) then it works fast then select(name,address)from view..Incorrectly interpreting the results.
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select * from foo_viewOracle sees it as follows:
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