I need help understanding the concept of Java...

Hello, this is my first post. I'm new to Java as well as programming, and I;m really having problems understanding the whole concept of classes, methods, arguments, parameters, constructors and so forth....can someone please explain this in baby terms....like a class is a big box and a method is something inside the box, or out!!!
thanks

Hi,
It looks you know nothing about programming. :)
Java is a very nice and easy programming language.
The best for you is to start programming to read a book
"Thinking in Java", Bruce Eckel. You can find it on the internet or download it from www.BruceEckel.com, or find it on www.filesearch.ru. This book will give you everything about Java. And then take any book what you like and go ahead. Practice, Practice and Practice!
Good luck!

Similar Messages

Help needed in understanding the concept of hierarchical queries

I really need help in this matter. I have a flafile containing about 4000 rows. It is from my supplier, it's structure is as follows:
create table Flatfile
(Pgroup varchar2(30),
Pclass varchar2(30),
Manufacturer varchar2(30),
Article varchar2(30),
Price Number(6,2));
Insert into Flatfile Values
('Application Software','Database Software','Oracle','Oracle 10G',115);
Insert into Flatfile Values
('Application Software','Database Software','Microsoft','MS SQL Server 2000',200);
Insert into Flatfile Values
('Application Software','Spreadsheet Software','Microsoft','Excel',100);
Insert into Flatfile Values
('Monitor','15"','Acer','Acer 15"" TFT superscreen',199);
Insert into Flatfile Values
('Monitor','15"','Sony','Sony R1500 flat',225);
Insert into Flatfile Values
('Monitor','17"','Philips','Philips Flatscreen',250);
Insert into Flatfile Values
('Monitor','19"','Viewsonic','Viewsonic PLasma Monitor',275);
Insert into Flatfile Values
('Processor','AMD','AMD','FX-55',600);
Insert into Flatfile Values
('Processor','Intel','Intel','P4 3 GHZ',399);
My goal is to make a hierarchical query with the start with and connect by clauses. From what I have read is that I need to normalize the data of the flatfile.
How do I achieve a table which I can query so that the query will represent the hierarchy that exists. Namely
Pgroup
++Pclasse
Application Software
++Database Software
++Spreadsheet Software
So a 2-level hierarchy. I'd like to understand this simple concept first. I built on the knowledge that I gain. So the questions are:
1.What do I need to do to make the table so that I can use a hierarchical query on it?
2. How should the query syntax be?
3. Is it also possible to get the data in the hierarchical query sorted asec?
I would only like to use the simple structures of the start with and connect by clauses first. I've read there are some new additions to 10G. The problem with the examples used by the tutorials is that the tables are already made so that they are suitable for hierarchical queries. I hope to understand it by this example. And take it a step further.
Sincerely,
Pete

Primarily hierarchy query serves to process tree-like structures which RDBMS simulates using through parent-child relation, often in a single table (see famoust
EMP table where employee can have the manager who is an employee at the same time).
In your case it could look like:
SQL> select pgroup, pclass from flatfile;
PGROUP                         PCLASS
Application Software           Database Software
Application Software           Database Software
Application Software           Spreadsheet Software
Monitor                        15"
Monitor                        15"
Monitor                        17"
Monitor                        19"
Processor                      AMD
Processor                      Intel
                               Application Software
                               Monitor
                               Processor
12 rows selected.
SQL> select decode(level,1,pclass,' ' || pclass), Manufacturer from flatfile
2 start with pgroup is null
3 connect by prior pclass = pgroup
4 /
DECODE(LEVEL,1,PCLASS,''||PCLASS MANUFACTURER
Application Software
Database Software              Oracle
Database Software              Microsoft
Spreadsheet Software           Microsoft
Monitor
15"                            Acer
15"                            Sony
17"                            Philips
19"                            Viewsonic
Processor
AMD                            AMD
Intel                          Intel
12 rows selected.The hierarchy syntax is described completely in the documentation including
LEVEL and PRIOR keywords.
As for the ordering question you can use siblings ordering:
SQL> select decode(level,1,pclass,' ' || pclass), Manufacturer from flatfile
2 start with pgroup is null
3 connect by prior pclass = pgroup
4 order siblings by 1 desc
5 /
DECODE(LEVEL,1,PCLASS,''||PCLASS MANUFACTURER
Processor
Intel                          Intel
AMD                            AMD
Monitor
19"                            Viewsonic
17"                            Philips
15"                            Acer
15"                            Sony
Application Software
Spreadsheet Software           Microsoft
Database Software              Oracle
Database Software              Microsoft
12 rows selected.Rgds.

Need help understanding the device association

So I've been trying to understand the logic for the device association for iTunes in the Cloud, but I just don't get it, and hope someone here can shed some light on it for me. Just to clarify, I'm not talking about the computer authorization (5 computers pr account), but the max 10 devices associated pr account for automatic download and previous purchases.
I have two Apple IDs, two computers and two iOS devices. I've tured OFF automatic download on all devices since I don't want all apps to be downloaded to all devices and I want to manage that myself, but I've been downloading previous purchases on all the devices from iCloud. When I view my account overview I see that one accout is assosicated with one of my computers, but nothing else. The other account is associated with my iPad but nothing else. The "problem" is that I can download previous purchases from both accounts from both the iPad and the computer i mentioned. If I understand the device association description correctly, this should not have been possible(?) I should only be able to download previously purchased apps from the account the device is associated with right? I've also downloaded previously purchased apps from my other computer and iPhone as well without them being associated with any of the accounts.
Don't get me wrong - I'm glad I can do this, but I'm just trying to understand how the devices get associated? I don't want any of my devices to end up in a 90 day quarantine, so it would be nice to know how to avoid this.
Thanks!

Probably not of any help but my understanding was the same as yours i.e. if you turn on automatic downloads, use iTunes match or re-download past purchases then that computer or device becomes associated with that account for 90 days : http://support.apple.com/kb/HT4627
But I've seen other people post the same experience as you have, so it's not clear to me when it does or doesn't start an association. When people ask how to get content that their partner/spouse has bought onto their device I usually suggest that they copy it from computer to computer (e.g. via a flash drive) and add it to their iTunes and sync it as opposed to re-downloading it due to the potential 90 day association.

I need help understanding the issues on why i can not download the latest version of shockwave player. this affecting all of my game play on any game i attemt to run.

is there anyone who may be able to help with the issues at hand? my current version of shockwave crashes at will! this is affecting any and all games i try to run. i have tried several times to download the latest version with no luck. if there is something i have done wrong, or something i have not done...please feel free to direct the right course of action.

See my response to your other question

Need help understanding the local caching of jnlp when creating it via jsp

I'm trying to deploy an app via Web Start. I have occasions when I need to pass arguments, so I'm using JSP to create the JNLP and optionally write arguments.
I need some help in figuring out how to cover my different use cases with as few different jnlps as possible and am confused about the local cacheing logic.
Use 1
Initial install: I pass an init=yes url param which writes a preferences file <argument> to be passed to my app. I don't want this argument cached in my jnlp, as this will overwrite the user's preferences on subsequent launches.
Use 2
Subsequent offline launches: no url params passed.
Use 3
Launch via html link (in a CMS): passes a file=<filename> url param which creates a file <argument> for my app to open. Again, I don't want this argument cached, otherwise launching from, say, the desktop shortcut will reopen this file.
Can anyone explain how best to cover these three use cases?
TIA!

Did you solve this cache problem? I have a similar issue where I don't want it to use the arguments over again...

ZPM: Need help understanding the quirks of ZPM

Does anyone have a successful implementation of ZPM in ZCM 10.3.3 running smoothly. I have been struggling with this product since December 2010, and need a little guidance around all of the quirkiness that exists.
So far I have found these elements that are inconsistent:
1. Mandatory Baselines with alot of patches to apply will spawn remediate.exe sessions in parallel. There is a hard breakpoint to only allow 4 simultaneous sessions, however sometimes, the patches don't apply at all.
2. When applying patches Windows Installer 4.5 and/or MS07 - 69, I watch it try to apply all 9 versions of the various types of patch, however the patch never successfully installs. Very strange. I assume this behavior could exist among other random patches. The patch client does not report back to the server that it failed. However, it orders the reboot to occur.
3. There is a strange coorelation between the analyze.exe and the remediate.exe if they are running together. Sometimes, the remediate.exe will spawn chaotically if the analyze.exe is processing as well. This occurs if a load block of patches are lined up for deployment.
4. The Graphs in the Patch Management system don't make any sense. I have 522 devices, and only 40 devices are reported on?
My main concern is that I do not have a guaranteed process in place that will ensure patch success. I need the following things to occur:
1. If a patch is successful, I need the server to know that it is successful. :)
2. If the patch fails, I need to see that it fails, I need the debug mechanism in the zmd-messages log to explain why it failed, so that it can be remedied.
3. I would like someday that the mandatory baseline feature works properly, and doesn't go crazy with spawning issues, because low-memory machines freeze up from all the memory allocations that occur.
If anyone is out there who successfully uses this product, please let me know, because I need to steering guidance, because the controls are not obvious on how to work them, and I would hate to abandon ship, if there are some good smart workarounds that are known.
HELP! :)

splittgerb,
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posting. That concerns us, and has triggered this automated reply.
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Need help understanding the various speaker set

I must admit to never having used anything but a 2 speaker setup with a sub. I was using an altec set with 4 speakers and a sub, tho i only used it as stereo. This is where i'm confused. What was that...a 5. Thats what i believe it's called. The description doesn't fit because i see there are also 4. sets. So if a 4. means 4 speakers and a sub, what is a 5.....5 speakers and a sub? Thats wouldn't seem balance with an odd number of speakers.
So as you can see i'm totally in the dark about all this and need a explanation as to what the . represents (the sub?) and the difference between 5. and 4..
Another question...i now have the logitech 2. Z-2200's. I'm sorta wishing now that i'd gotten some 5.'s or whatever 4 speakers and a sub is called. last nite i hooked up the old altecs to the rear channel so that i had a full 5. setup, tho of course the very different sounding different speakers on the rear channel probably held back the full potential of the sound. Anyway, i listened to some mucic with this setup and played UT2004 with it. As to the sound for the game, that was nice but nothing to write home about. But the music listening was great. So can anyone suggest a good sounding set of PC speakers to match the logitech's sound quality. I 'm talking about a simple 2 speaker set, no sub, just to hook up to the rear channel. Doesn't have to match the logitech's tonal curve, just it's level of quality, or at least fairly close to it. I'd just use the altecs but they sounded literally /4 as good as the logitechs.

I guess i wasn't clear...i wrote the post at work and was rushed, plus since then i've figured out what the x.x sytem refers to exactly.
I just bought a 2. logitech system and already have a 4. ste of altecs. I love the logitechs and have no intention of getting something else, especially considering i just got em a week ago. but i tried using the altecs with the sub off and only 2 speakers as the rear speakers to simulate a 4. setup. I really like it and therefore decided to get another good set of 2.0 to use as rears only along with the logitechs to have 4. as i now have with the altecs because the altechs sound crappy. So what i really want to know is if anyone makes a good 2.0 set. I since found a few, but the good ones are as much as my logitec 2. system because there are only a very few good 2.0's made. So my only choice i've found so far is an altec set.
The other thing i was wondering is how to get the 4. setup to work correctly because there is no 4. in speaker setup in ctpanel. i saw a thread that showed a download that will allow 4., but i was going to lunch and didn't have time to read it fully. So i'm gonna go check it out right now and see if the download applies to my card.

Need some help understanding the way materialized views are applied through

Hi, I need some help understanding the way materialized views are applied through adpatch.
In patch 1, we have a mv with build mode immediate. When applying it PTS hang due to pool performance of mv refresh.
So we provide patch 2, with that mv build mode deferred, hoping it'll go through. But patch 2 hang too on the same mv.
How does this work? Is that because mv already exists in the database with build immediate, patch 2 will force it to refresh first before changing build mode? How to get over this?
Thanks,
Wei

Hi Hussein,
Thank you for the response.
Application release is 11.5.10.
Patch 1 is MSC11510: 8639586 ASCP ENGINE RUP#38 PATCH FOR 11.5.10 BRANCH
Patch 2 is MSC11510: 9001833 APCC MSC_PHUB_CUSTOMERS_MV WORKER IS STUCK ON "DB FILE SEQUENTIAL READ" 12 HOURS
The MV is APPS.MSC_PHUB_CUSTOMERS_MV
This happens at customer environment but not reproducable in our internal environment, as our testing data is much smaller.
Taking closer look in the logs, I saw actually when applying both patch 1 and patch 2, MV doesn't exist in the database. So seems my previous assumption is wrong. Still, strange that patch 2 contains only one file which is the MV.xdf, it took 7 hours and finally got killed.
-- patch 1 log
Materialized View Name is MSC_PHUB_CUSTOMERS_MV
Materialized View does not exist in the target database
Executing create Statement
Create Statement is
CREATE MATERIALIZED VIEW "APPS"."MSC_PHUB_CUSTOMERS_MV"
ORGANIZATION HEAP PCTFREE 10 PCTUSED 40 INITRANS 10 MAXTRANS 255 LOGGING
STORAGE(INITIAL 4096 NEXT 131072 MINEXTENTS 1 MAXEXTENTS 2147483645
PCTINCREASE 0 FREELISTS 4 FREELIST GROUPS 4 BUFFER_POOL DEFAULT)
TABLESPACE "APPS_TS_SUMMARY"
BUILD IMMEDIATE
USING INDEX
REFRESH FORCE ON DEMAND
WITH ROWID USING DEFAULT LOCAL ROLLBACK SEGMENT
DISABLE QUERY REWRITE
AS select distinct
from
dual
AD Worker error:
The above program failed. See the error messages listed
above, if any, or see the log and output files for the program.
Time when worker failed: Tue Feb 02 2010 10:01:46
Manager says to quit.
-- patch 2 log
Materialized View Name is MSC_PHUB_CUSTOMERS_MV
Materialized View does not exist in the target database
Executing create Statement
Create Statement is
CREATE MATERIALIZED VIEW "APPS"."MSC_PHUB_CUSTOMERS_MV"
ORGANIZATION HEAP PCTFREE 10 PCTUSED 40 INITRANS 10 MAXTRANS 255 LOGGING
STORAGE(INITIAL 4096 NEXT 131072 MINEXTENTS 1 MAXEXTENTS 2147483645
PCTINCREASE 0 FREELISTS 4 FREELIST GROUPS 4 BUFFER_POOL DEFAULT)
TABLESPACE "APPS_TS_SUMMARY"
BUILD DEFERRED
USING INDEX
REFRESH COMPLETE ON DEMAND
WITH ROWID USING DEFAULT LOCAL ROLLBACK SEGMENT
DISABLE QUERY REWRITE
AS select distinct
from dual
Start time for statement above is Tue Feb 02 10:05:06 GMT 2010
Exception occured ORA-00028: your session has been killed
ORA-00028: your session has been killed
ORA-06512: at "APPS.AD_MV", line 116
ORA-06512: at "APPS.AD_MV", line 258
ORA-06512: at line 1
java.sql.SQLException: ORA-00028: your session has been killed
ORA-00028: your session has been killed
ORA-06512: at "APPS.AD_MV", line 116
ORA-06512: at "APPS.AD_MV", line 258
ORA-06512: at line 1
Exception occured :No more data to read from socket
AD Run Java Command is complete.
Copyright (c) 2002 Oracle Corporation
Redwood Shores, California, USA
AD Java
Version 11.5.0
NOTE: You may not use this utility for custom development
unless you have written permission from Oracle Corporation.
AD Worker error:
The above program failed. See the error messages listed
above, if any, or see the log and output files for the program.
Time when worker failed: Tue Feb 02 2010 19:51:27
Start time for statement above is Tue Feb 02 12:44:52 GMT 2010
End time for statement above is Tue Feb 02 19:51:29 GMT 2010
Thanks,
Wei

I need help understanding how the Apple components integrate to create a system across all my devices?

I need help understanding how the Apple components connect to create a whole system across all my devices?
Is there a resource that describes current system and associated functionality?
For example:
Buy A, B, C to achieve "X"
You will need:
an internet provider which supports <specs>
add D to achieve "Y"
You will need:
an internet provider which supports <specs>
add "E" to achieve "Z"
You will need:
an internet provider which supports <specs>
For example, I am looking at the Gen 6 Airport extreme. For intended performance do I need broadband? if so what are the specs, or will basic internet service suffice? Do I need the internet provider's modem or does the Airport extreme replace that? And then I think, if I am doing this, I should also look at Apple TV....What do I need and Why? Then I look at the New Desk top coming out in the fall, and I think well, if I wait and get this, what does this component do for the system, and what becomes redundant? What does this awesome desktop do for my ability to sit and use a new macbook air when I travel or sit on the couch in my PJs?
If there was a place that plainly stated "if you buy the new dektop you can configure a system including only these components and achieve <this result> and by adding <additional components> you will achieve this result.
I have been to the genius store a few times, but I come out of there more confused unless I have SPECIFIC questions or already know what to buy.
A "System Configuration App" would be a really great sales tool--Just saying.

I have no idea what "fully optimized" means.
No Apple device will let you watch broadcast TV. The Apple TV is a good option for watching streaming TV from iTunes, NetFlix and Hulu. If you want to watch from other sources, you may need to look at other devices.
Any Mac computer or iPad will allow you to surf the web.
What business software?
Time Capsule is a good option for back ups.
Update what across all devices?
For accessing documents from all devices, a service like Dropbox is your best bet.
I have no idea what "step as far away from an internet provider as possible" means. If you want Internet access, you need an Internet provider.
Lighting fast speed for what? Processor? The specs are listed for all devices in the Online Store. Internet? We're back to the service provider.
Technology changes. The only way to keep pace with it beyond a couple of years is to buy new stuff.
The bottom line is you need to look at the specs for devices availble and at your budget and decide what best meets your needs. If you are unable to do that on your own, there are lot of technology consultants out there who will, for a fee, look at your exact situation, make recommendations and even handle the purchase and set up. Perhaps that would be the best route for you.
Best of luck.

HT5622 i need help using the icloud it is not making any since to me can some one call me and help me with it please don't try to help me through email i need to talk and listen i don't understand instruction by reading

i need help using the icloud it is not making any since to me can some one call me and help me with it please don't try to help me through email i need to talk and listen i don't understand instruction by reading.
<Phone Number Edited by Host>

You aren't addressing anyone from Apple here. This is a user forum.
You might want to call a neaby Apple store to see if they have a free class you could attend.

EHP Upgrade - Trying to understand the concept

Dear experts, this is an effort to understand the concept. I have been doing Basis work for the past 10 years approximately. All along, I have been doing the typical LCP and SP upgrades way back from legacy systems until now (ECC 5.0 / BW 3.5). We have recently upgraded our BW 3.5 to BI 7.01 and also created a dual stack (we never had Java stack before for BW). This is my situation. Below are my questions. Any guidance would be highly appreciated.
1. Do we still have the SP Stack upgrades within Ehp 1? Or, has it been revamped completely and there is no more SP upgrades and we only need to do EhP upgrades? In this case, if I have to upgrade from Netweaver 7.01, is my only option upgrading to 7.02?
2. Is there a place where I can start to catchup with the whole EhP concept? I would like to know the maintenance life cycle and the impact on our environment.
3. Are there any specific upgrade guides that will guide me in transitioning from the typical SP upgrade methodology to EhP upgrade methodology. Also, I would like to know how did you transition (learning curve) from someone who had been with typical SP upgrade for a long time and how did you adopt yourself to the new path (like what guides did you use, what links did you follow, etc)
NOTE: I have heard the EhP upgrades are similar to release upgrades and I have done handful of release upgrades.
Thank you so much in advance.

>1. Do we still have the SP Stack upgrades within Ehp 1? Or, has it been revamped completely and there is no more SP upgrades and we only need to do EhP upgrades? In this case, if I have to upgrade from Netweaver 7.01, is my only option upgrading to 7.02?
Yes we do have both option available. Either we can go for SP upgrade or we can go with EHP upgrade.
>2. Is there a place where I can start to catchup with the whole EhP concept? I would like to know the maintenance life cycle and the impact on our environment.
Yes. http://Service.sap.com/erp-ehp is the place where you can get all the infromation and document.
>3. Are there any specific upgrade guides that will guide me in transitioning from the typical SP upgrade methodology to EhP upgrade methodology. Also, I would like to know how did you transition (learning curve) from someone who had been with typical SP upgrade for a long time and how did you adopt yourself to the new path (like what guides did you use, what links did you follow, etc)
Everything is available on Service marketplace.
Regards,
Subhash

I just created an iCloud email and I want to use that email for my iTunes account as well. I need help suiting the old apple I'd because I do not remember anything associated with that email and I don't know the security questions

I just created an iCloud email and I want to use that email for my iTunes account as well. I need help switching the old apple ID because I do not remember anything associated with that email and I don't know the security questions or the login for that old email.

You cannot do that. The AppleID you used to create the iCloud account is an active primary email address. The email address you created with the iCloud account is also an active primary email address (all Apple domain email address automatically become AppleIDs as well). You cannot replace the primary email address on one active AppleID with the primary email address on another, active AppleID.
You can use your iCloud email/AppleID with iTunes, but it will be a separate account, so all your previous purchases remain tied to the other AppleID you have.
I don't understand your statement that you could not remeber your old AppleID password, as you would have had to use it to create the iCloud account in the first place (the first step of creating the iCloud account required you to login with your existing AppleID and password)?

Unable to understand the concept of Primary Key in EJB

hi,
please help me in understanding the concept of Primary Key.
For each and every entity bean represents a data base row. i think it is correct. if multiple users are accessing the same data base row, there will be different primary key for each and every client. is it correct or not. can we say this as "concurrency"?. if all the clients are manipulating the bean, who manages it either application server or data base server?. why does we must implement both hashCode() and equals() methods?. Provide me the links where i can find the answers.

if multiple users are
accessing the same data base row, there will be
different primary key for each and every client.This is incorrect: the PrimaryKey is the unique identifier for each database row. It has nothing to do with users. In order for CMP to work, the container must be able to operate with a single row in the database and be able to distinquish between them.
If your CMP->database table already has one column that's unique, then you declare that CMP field to be <primary-key-field>. If you have more than one column that makes a row unique, you must make your own primary key object. The way the container can tell the difference between these primary key objects is to compare them, therefore the hashCode and equals methods.
Provide me the links where i can find the
answers.This is all discusssed in the J2EE Tutorial.

Need help regarding the location of Exchange 2013 Logs for parsing

Hi, I am trying to create reports based on the logs that are created on my exchange server. I am using
exchange 2013. My problem is that I cannot handle every log, and instead want specific types of logs.
I need help finding the specific locations of the following types of logs (If they even exist), so that I can parse them and use them effectively:
Audit Logs (Mailbox logons, Mailbox permission changes, Mailbox property changes,
Exchange store changes)
Mail Report Logs (Mailbox size and growth, Mailbox storage growth, Enabled users, Expired and Soon-to-Expire Mailboxes)
Exchange Traffic Reports (Details on size and amount of messages sent and recieved, Internet traffic [to and from], Traffic between exchange users)
I understand this might sound like a huge undertaking, but any help that can be provided would be appreciated.
Again, I need information on the locations of these types of logs on the exchange server, so that I can parse them. Collecting them all and searching through them is not practical for my available resources.
Thanks,
Matt

Audit Logs (Mailbox logons, Mailbox permission
changes, Mailbox property changes, Exchange
store changes) ---- these are two type of logs, 1. mailbox audit logs and that is stored in each mailbox under dumpster
http://technet.microsoft.com/en-us/library/ff461930(v=exchg.150).aspx however you need to
enable
it for individual mailboxes... 2. admin audit log, this is stored into a system mailbox dumpster.... http://technet.microsoft.com/en-us/library/dd335052(v=exchg.141).aspx
Mail Report Logs (Mailbox size and growth, Mailbox
storage growth, Enabled users, Expired and Soon-to-Expire Mailboxes) ---- there isn't any specific log for this, you would need to create some time of script to collect this every day for you and store it somewhere... This is a good start... http://www.stevieg.org/2011/06/exchange-environment-report/
Exchange Traffic Reports (Details on size and
amount of messages sent and recieved, Internet traffic [to and from], Traffic between exchange users) ----- This you can get from message tracking log... http://technet.microsoft.com/en-us/library/bb124375(v=exchg.150).aspx

I need help with the Quote applet.

Hey all,
I need help with the Quote applet. I downloaded it and encoded it in the following html code:
<html>
<head>
<title>Part 2</title>
</head>
<body>
<applet      codebase="/demo/quote/classes" code="/demo/quote/JavaQuote.class"
width="300" height="125" >
<param      name="bgcolor"      value="ffffff">
<param      name="bheight"      value="10">
<param      name="bwidth"      value="10">
<param      name="delay"      value="1000">
<param      name="fontname"      value="TimesRoman">
<param      name="fontsize"      value="14">
<param      name="link"      value="http://java.sun.com/events/jibe/index.html">
<param      name="number"      value="3">
<param      name="quote0"      value="Living next to you is in some ways like sleeping with an elephant. No matter how friendly and even-tempered is the beast, one is affected by every twitch and grunt.|- Pierre Elliot Trudeau|000000|ffffff|7">
<param      name="quote1"      value="Simplicity is key. Our customers need no special technology to enjoy our services. Because of Java, just about the entire world can come to PlayStar.|- PlayStar Corporation|000000|ffffff|7">
<param      name="quote2"      value="The ubiquity of the Internet is virtually wasted without a platform which allows applications to utilize the reach of Internet to write ubiquitous applications! That's where Java comes into the picture for us.|- NetAccent|000000|ffffff|7">
<param      name="space"      value="20">
</applet>
</body>
</html>When I previewed it in Netscape Navigator, a box with a red X appeared, and this appeared in the console when I opened it:
load: class /demo/quote/JavaQuote.class not found.
java.lang.ClassNotFoundException: .demo.quote.JavaQuote.class
     at sun.applet.AppletClassLoader.findClass(Unknown Source)
     at java.lang.ClassLoader.loadClass(Unknown Source)
     at sun.applet.AppletClassLoader.loadClass(Unknown Source)
     at java.lang.ClassLoader.loadClass(Unknown Source)
     at sun.applet.AppletClassLoader.loadCode(Unknown Source)
     at sun.applet.AppletPanel.createApplet(Unknown Source)
     at sun.plugin.AppletViewer.createApplet(Unknown Source)
     at sun.applet.AppletPanel.runLoader(Unknown Source)
     at sun.applet.AppletPanel.run(Unknown Source)
     at java.lang.Thread.run(Unknown Source)
Caused by: java.io.FileNotFoundException: \demo\quote\JavaQuote\class.class (The system cannot find the path specified)
     at java.io.FileInputStream.open(Native Method)
     at java.io.FileInputStream.<init>(Unknown Source)
     at java.io.FileInputStream.<init>(Unknown Source)
     at sun.net.www.protocol.file.FileURLConnection.connect(Unknown Source)
     at sun.net.www.protocol.file.FileURLConnection.getInputStream(Unknown Source)
     at sun.applet.AppletClassLoader.getBytes(Unknown Source)
     at sun.applet.AppletClassLoader.access$100(Unknown Source)
     at sun.applet.AppletClassLoader$1.run(Unknown Source)
     at java.security.AccessController.doPrivileged(Native Method)
     ... 10 more
Exception in thread "Thread-4" java.lang.NullPointerException
     at sun.plugin.util.GrayBoxPainter.showLoadingError(Unknown Source)
     at sun.plugin.AppletViewer.showAppletException(Unknown Source)
     at sun.applet.AppletPanel.runLoader(Unknown Source)
     at sun.applet.AppletPanel.run(Unknown Source)
     at java.lang.Thread.run(Unknown Source)
java.lang.NullPointerException
     at sun.plugin.util.GrayBoxPainter.showLoadingError(Unknown Source)
     at sun.plugin.AppletViewer.showAppletStatus(Unknown Source)
     at sun.applet.AppletPanel.run(Unknown Source)
     at java.lang.Thread.run(Unknown Source)What went wrong? and how can I make it run correct?
Thanks,
Nathan Pinno

JavaQuote.class is not where your HTML says it is. That is at the relative URL "/demo/quote/".

I need help understanding the concept of Java...

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