Should I do it? I need your opinions.
I'm getting an iMac (see below) Apple just posted a refurbished model of what I am looking for. Being thirteen years old, should I go ahead and buy it, or should I work for a few more months and get a brand-new iMac. There's no question of putting off my purchase more than a few months, as I'm sick of Windows and don't have any Macs available to me. Please post your opinions!
Either you already "did it," or someone else did.
It's gone, but don't worry, there are plenty more on the way.
I understand that Apple traditionally runs a "Black Friday" sale.
Might be worth holding off for 6 days to see what they offer.
Just a general comment on Apple refurbs -- I notice they have
a 24" white 2.16 GHz C2D listed for $1449. You can buy the
same machine, BRAND NEW, from smalldog.com for $50 more,
and it comes with iLife'08 (plus iLife'06 on the install disks).
The Apple refurb comes with iLife'06 only.
BTW, keep an eye on smalldog.com -- they're an authorized
reseller with excellent service, and they often have refurbs.
...sometimes refurbs are a good deal, sometimes not,
Looby
Similar Messages
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hi i have an ipad mini and i have not used it for 2 month or more. Today i have tried to use it i came across with a problem. my Ipad is blocked and it asks me to wait 23,401,418 what should i do need your help. thanks
Have you charged ipad Try a Reboot press & hold power button & menu button hold both down until you see Apple Logo You may need to do this more than once. Bsydd uk
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having problem buying online.need your help since it's my first time here.apple is asking for my billing address but when i enter my address here in qatar,it's saying i should enter a valid zip code within the u.s.does it mean i can't buy online even if it wil be shipped within u.s. only?
To buy in for delivery in Qatar, you should be starting from the Apple Qatar site:
http://www.apple.com/qa/
Do you have an Apple-ID? if you do, then you should not have to enter your Address again, and may be able to sidestep the US Zip Code issue. -
Your Opinions: Inner Classes Need static Members
Hi All,
I want to solicit opinions for a minor change to the way inner classes work. I submitted this as an RFE to Sun and they rejected it, really without giving a reason. I'd like to know your opinions. If there is strong support I will repost the RFE.
As you probably know, inner classes cannot have static members. The following generates a compiler error:import java.util.*;
public class MyClass {
class MyInnerClass {
// Next line causes compiler error...
static Map m = new HashMap();
}In order to get around this you have to make the Map variable a static member of the containing class:import java.util.*;
public class MyClass {
static Map m = new HashMap(); // so much for encapsulation...
class MyInnerClass {
}I am suggesting that inner class be allowed to contain static members. Here's my reasoning...please comment:
There are times when members (i.e., fields and methods) rightfully belong to the class as a whole, not to any particular instance of a class. I'm sure we've all found times when it was necessary to have static members in our classes. The same issues that necessitated using static members in top-level classes make them desirable for inner classes as well.
Designing a class as an inner class is a step toward encapsulation. By forcing static members that logically belong in an inner class to be declared in the containing class is to crack the encapsulation, IMHO.
Even though a containing class has access to all of an inner class' members (including private members) and vice versa, I think the notion of inner static members still is more OO-ish.
What are your opinions? Would allowing inner classes to contain static members make Java more object oriented? I think it would.
Technically, I don't think there's any reason this cannot work since the JVM has no notion of inner classes, per se.
What do you think?an inner class is effectively a non static instance
variable of its enclosing class. Instance member, but not a variable. it's a class, a type, not a variable.
>
I think the problem here is that making a field static
means more than just that that field and its value are
common to every instance of the class. It means that
the value is valid without an instantiation of that
class.
Since the class itself must be instantiated (it is
not static), What do you mean, excatly, by "_must_ be instantiated"? You are not ever "required" to instantiate anything unless you want to use it.
you can't have static member data inside it. I don't see how this follows from the previous part of the statement.
How would you reference the static member data of
the inner class? You would have to specify an
instance of the inner class, and since this breaks
the meaning of static, you can't have static members
in an inner class.How about outerObj.InnerClass.staticMember The syntax is well defined. The question at hand is, do we really want to allow this? The syntax to do this should only be an issue after that question has been answered in the affirmative. The people at Sun have decided not to allow it, so for now, syntax is a non-issue.
>
if you wanted a static member in an inner class you
could put it in a super class of the inner class...Or in the enclosing class, as suggested in the orginal post. -
Preamp racks/Firewire interfaces - your opinions please
For some time now I've been looking at getting the MOTU 896, as it appears to be a great deal and of great quality. However, the more I look at the forums I've noticed that everyone seems to love their presonus stuff a whole lot.
So now for your opinions. . . does anyone have any good info or experience with either one of these? Which do you guys like better? Or are there any other interfaces that you'd pick over either of these two? Thanks a lot.Its tough, and its all about budget. I wanted to record 16 channels in a live setting, so I went with two firepods. So far, a pretty good experience, though i've had some problems with digital artifacts at random times. Tech support has been pretty good, but we haven't fixed the problem. I've recently discovered that it might be the longer fw cables i bought a while back, not sure yet.
That said, I'm planning on purchasing an Ensemble once it ships with working drivers and someone has tested it. This way, I'll have 4 apogee pre-amps, 4 line inputs (one firepod in hardware mode will feed this) for a total of 8 apogee A/D convertors, then daisy chain my other pod for an additional 8 channels, also clocked by the Ensemble w/ SPDIF. It should make the pods sound even better.
From what I've read on these boards, I would definitely go with RME, Metric halo, or possibly the Ensemble. Haven't heard good things about the 896 pres.
Regardless, you will probably need more pre-amps if you are recording drums, so something like the Presonus Digimax FS or LT will probably be the cheapest option. It really depends on how many pres you need exactly. -
Router ROMMON upgrade - your opinions
Hello,
I've read in several documents that there is only a need to upgrade ROMMON if there are new features in new ROMMON versions.But, e.g. the ROMMON upgrades for the Cisco 2800 platform, the changelog for 12.4(13r)T5 says "Enhancement for device access in certain Cisco routers.",
12.4(13r)T6 says "DRAM access optimization" and 12.4(13r)T11 says "write/erase timeout increase + status read changes".
Or with the Cisco 2900 platform, the changelog for 15.0(1r)M10 says:
Saving of IOS config sometimes fails on some 2900s (Fix in ROMMON)
- Bootflash access timing parameter change.
Compact Flash timing parameter changes (ROMMON)
- Compact flash access timing parameter change.
I think the bug "Saving of IOS config sometimes fails" is not a small one. And I don't know what "DRAM access optimization" or "write/erase timeout increase + status read changes" exactly does.
Is it still true to upgrade ROMMON just in case there are new features which are needed. Or should the ROMMON be upgraded just as the IOS if a new version with fixes is available?
Thank you for your opinions.Disclaimer
The Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting's information is solely at reader's own risk.
Liability Disclaimer
In no event shall Author be liable for any damages whatsoever (including, without limitation, damages for loss of use, data or profit) arising out of the use or inability to use the posting's information even if Author has been advised of the possibility of such damage.
Posting
Just like with IOS upgrades, generally most would upgrade if there's a new feature or bug fix that pertains to you. When neither is true, most prefer to not upgrade; "it ain't broke, don't fix it".
Consider many software releases are for bug fixes, so although you might not have bumped into a known defect, you may. This would argue for upgrading all maintenance fixes. However, sometimes, maintenance for defects introduces other defects. This argues only do an upgrade if operationally necessary.
So, whether it's an IOS or ROMMON upgrade, it's really what you think is best.
PS:
BTW, for some platforms like the 2800, I recall an effective ROMMON update would force an immediate reload, unlike a IOS upgrade which can be loaded onto flash and the reload scheduled for later. (Suspect this is why Leo insures there's a new IOS on the 2800 before he does the ROMMON upgrade.) -
Let's discuss my application architecture,and give me your opinions
hello
we have several internal systems that are within the same lan and want to communicate with several external systems that may be in the other buildings by using the release line.i am now considering the architecture for the project,and have got an immature blueprint,please help me to make it more perfect by give me your opinions,the scenario as:
within the lan,there are several systems that are developed by using different languages,let's suppose they are two(named internal1 and internal2),the two systems need to communicate with other two external systems(named external1 and external2) that are also developed by using different languages.all of the communications are bi-direction.there are several combinations:
1 internal1 <--> internal2
2 internal1 <--> external1 or external2
3 internal2 <--> external1 or external2
in my project,the timelimit is critical,as short as possible.
according to the mentioned requirements,i decide to develop a infomation exchanging platform by using java which sit in the MIDDLE of the internal and external systems and WITHIN the lan,act as information dispatcher or coordinator,both of the internal system and external system communicate with it only.considering the multi-language and time-critical feature,i choose the way of socket communication among the systems and design a set of xml format internal protocol.otherwise,i think the message middleware are also needed within my project as message buffer.when i deepen into the detailed designing,i get some confusions,let us discuss them as followiing:
1 if is the socket the good solution for my project?how can i assign the ports?because of the introduction of the information exchanging platform into my project,the communication combination is simplified to "internal system<-->info exchange platform" and "external system<-->info exchange platform",the crucial point for the port designing is how to assign the port in the info exchange platform,that is SERVER socket port.in my designing,i plan to assign different port for each subsystem.thus,the devleopment to the info exchange platform is simplified,that is:when the message comes,i don't need to analyse the xml message to check which system it comes from.but some people suggest me to open ONE port to all the internal systems,and ANOTHER port to all the external sysetms.i don't know which solution is better?if are there some regulations that concern about the socket port assigning?
2 if is the information exchanging platform needed?some one suggest that subsystems can communicate with each other directly,
the coordinating platform is not needed.but i think,from the EAI point of view,there should be a adapter between the internal system and external system.
3 where should i put the message queue server?and if is the mom needed?i plan to use the mq between the exchange platform and external systems ONLY,and it is also within the lan,in my designing,i config two queue for EACH external system,one for incoming message and other for outgoing message,to each queue,i assign a message listener to execute different operations on its "onMessage" method,that is:when the message come from internal system,the exchange platform send them to the exact OUTGOING queue according to the destination of the message,then the listener of the queue call the socket of the according external system and send the message to it.otherwise,when the external system need to send the message to internal system,it call the exact socket port in the exchange platform that is assigned to it as mentioned above,the platform accept the msg,and send them to the exact incoming queue,then the listener deal with the msg and send them to the internal destination.in this solution,i put the mq behind the socket,but someone give me another suggestion,that is i directly put the message queue between the exchange platform and the external systems instead of using the socket as the front-end,all of them send the message to the queue and listen the queue,but i think,in such solution,the external system must listen the queue REMOTELY,is it a good way?
also,somebody tell me that the exchange platform and remote external system can communicate each other DIRECTLY by socket,the message queue is not needed,i don't make sure if the mq is necessary in my situation?and what is the benefit and disadvantage?
as for the communication between the internal system and info exchange platform,i think the mq is NOT needed,they can communicate each other directly by socket,furthermore,in my designing,i make them connect to each other FOREVER,that is i don't close the socket after each message transferation,as mentioned above in the issue of the socket assigning,every port in the exchange platform is DEDICATED,that means the port is specific to each system,so that they don't need to create and close socket connection frequently,that will make the program more performant,but if i use one port to listen all the internal system,then the socket must be closed by the end of each transferation because of the block problem,that is just another reason why i use dedicated port connection to each of the internal system.
4 the another question is the secure issue accompanying by the socket,i think i needn't consider such problem in the internal connection,but to the connection between the platform and external system,the issue become preeminent,that is i must open the socket port in the firewall.but i think the connection between the lan and the external system use special line,not by internet,i wonder if the secure probem is critical in such situation?otherwise,i remember that some kinds of product from visibroker company can solve the firewall socket problem by using the http channel protocol,but i don't remember its name for sure,it seem like is called something gateway.who used such kind thing?and tell me how does it work?hello
we have several internal systems that are within the same lan and want to communicate with several external systems that may be in the other buildings by using the release line.i am now considering the architecture for the project,and have got an immature blueprint,please help me to make it more perfect by give me your opinions,the scenario as:
within the lan,there are several systems that are developed by using different languages,let's suppose they are two(named internal1 and internal2),the two systems need to communicate with other two external systems(named external1 and external2) that are also developed by using different languages.all of the communications are bi-direction.there are several combinations:
1 internal1 <--> internal2
2 internal1 <--> external1 or external2
3 internal2 <--> external1 or external2
in my project,the timelimit is critical,as short as possible.
according to the mentioned requirements,i decide to develop a infomation exchanging platform by using java which sit in the MIDDLE of the internal and external systems and WITHIN the lan,act as information dispatcher or coordinator,both of the internal system and external system communicate with it only.considering the multi-language and time-critical feature,i choose the way of socket communication among the systems and design a set of xml format internal protocol.otherwise,i think the message middleware are also needed within my project as message buffer.when i deepen into the detailed designing,i get some confusions,let us discuss them as followiing:
1 if is the socket the good solution for my project?how can i assign the ports?because of the introduction of the information exchanging platform into my project,the communication combination is simplified to "internal system<-->info exchange platform" and "external system<-->info exchange platform",the crucial point for the port designing is how to assign the port in the info exchange platform,that is SERVER socket port.in my designing,i plan to assign different port for each subsystem.thus,the devleopment to the info exchange platform is simplified,that is:when the message comes,i don't need to analyse the xml message to check which system it comes from.but some people suggest me to open ONE port to all the internal systems,and ANOTHER port to all the external sysetms.i don't know which solution is better?if are there some regulations that concern about the socket port assigning?
2 if is the information exchanging platform needed?some one suggest that subsystems can communicate with each other directly,
the coordinating platform is not needed.but i think,from the EAI point of view,there should be a adapter between the internal system and external system.
3 where should i put the message queue server?and if is the mom needed?i plan to use the mq between the exchange platform and external systems ONLY,and it is also within the lan,in my designing,i config two queue for EACH external system,one for incoming message and other for outgoing message,to each queue,i assign a message listener to execute different operations on its "onMessage" method,that is:when the message come from internal system,the exchange platform send them to the exact OUTGOING queue according to the destination of the message,then the listener of the queue call the socket of the according external system and send the message to it.otherwise,when the external system need to send the message to internal system,it call the exact socket port in the exchange platform that is assigned to it as mentioned above,the platform accept the msg,and send them to the exact incoming queue,then the listener deal with the msg and send them to the internal destination.in this solution,i put the mq behind the socket,but someone give me another suggestion,that is i directly put the message queue between the exchange platform and the external systems instead of using the socket as the front-end,all of them send the message to the queue and listen the queue,but i think,in such solution,the external system must listen the queue REMOTELY,is it a good way?
also,somebody tell me that the exchange platform and remote external system can communicate each other DIRECTLY by socket,the message queue is not needed,i don't make sure if the mq is necessary in my situation?and what is the benefit and disadvantage?
as for the communication between the internal system and info exchange platform,i think the mq is NOT needed,they can communicate each other directly by socket,furthermore,in my designing,i make them connect to each other FOREVER,that is i don't close the socket after each message transferation,as mentioned above in the issue of the socket assigning,every port in the exchange platform is DEDICATED,that means the port is specific to each system,so that they don't need to create and close socket connection frequently,that will make the program more performant,but if i use one port to listen all the internal system,then the socket must be closed by the end of each transferation because of the block problem,that is just another reason why i use dedicated port connection to each of the internal system.
4 the another question is the secure issue accompanying by the socket,i think i needn't consider such problem in the internal connection,but to the connection between the platform and external system,the issue become preeminent,that is i must open the socket port in the firewall.but i think the connection between the lan and the external system use special line,not by internet,i wonder if the secure probem is critical in such situation?otherwise,i remember that some kinds of product from visibroker company can solve the firewall socket problem by using the http channel protocol,but i don't remember its name for sure,it seem like is called something gateway.who used such kind thing?and tell me how does it work? -
Need your advice on making family videos without losing quality
I need your advice. I don't know where to put my question because I don't know which piece of software I need (so I am posting this in a few places on the forum: sorry). That is exactly the question, I guess.
I have a couple of digital cameras that I use to make family videos. They both produce .avi files. Sometimes I use an iPhone that produces .mov files. So after my children and grandchildren visit, I end up with a bunch of these little videos. I want to combine them into longer videos that I can watch more conveniently on my Apple TV 2 or put on a DVD to send my kids or to my elderly mother-in-law to watch. I know how to combine them using iMovie HD, but that process seems to radically degrade the resolution and/or image quality. The original .avi files are 1024x768 and are very clear and sharp. I can't watch these .avi files on my ATV2 so I've been using Quicktime Player 10.0 to open them and then save them as .mov files. Once I import these files into iTunes, I can watch them on my ATV2 and they too look great on my tv (since they have the same resolution as the original .avi files): sharp and clear. But after I use iMovie HD to combine them (the .avi files) into an .m4v file, they're down to 640x480, and don't look near as good. And the DVD made from this file using iDVD looks equally bad and blocky.
I think what I want to know is, can I change some parameters on iMovie HD to produce files that are as high quality as the original .avi and .mov files? Or if not, what software do I need to accomplish this? I'm not interested in "fancy" movies. These are just home movies, but they are important to us. Should I upgrade my iMovie to do this? Or get Quicktime Pro? Or what? I'd appreciate your advice. I'd like to keep the process as simple as possible.This is my workflow. I'm sure you will get a variety of opinions, but all I can say for my AVI clips, I've had excellent results for viewing on AppleTV.
I use iMovie HD 6 for organizing the clips into short movies, 15 minutes +/-. Clips are imported into iMovie as DV files. Once the movies are completed, I Export from iMovie as Full Quality, which results in a my-movie.dv file.
I then open the dv file in MPEG Streamclip. There I use the MP4 and iTunes settings for screen ratio and bit rate. 4:3 for Standard Def and 16:9 for High Def. Sounds complicated, but once you open MPEG Streamclip, the settings are simple to figure out.
The main thing to remember about quality is not to upscale your video. If the resolution is 640x480 SD, do not export higher than 640x480.
Here are a couple of screenshots using MPEG Streamclips "Export to MP4" setting: -
Need your help in Remodeling concept
Hi Gurus need your help in time estimations
I have a cube with data and now I need to add 10 new info objects to the cube which are including Date fields (BUDAT, BLDAT) these 10 fields will be populated to the cube from a Z table in ECC as we donu2019t have these fields in the cube we have to go for remodeling of the cube
My client requires how much time it will take to complete this
Now I want to know how much time it would take to do this (if any customer exits and user exits are required) and addition if new fields will have any effect on the current queries
Please advice in this
Thank youThe time taken will depends on a lots of factor like server speed, available memory, background jobs etc. Apart from this, the time will also depends on how much the cube is filled i.e. the no. of records in the cube. Its very abstract to tell you the exact time taken for this. But, please make sure that you have the backup of the cube which you are going to re-model. T0 say, I think 3-4 hours should be ok for the remodelling.
Thanks.
Shambhu -
Need your help on performance issue please
Hello everyone!
I need your help to understand an effect I notice with a Thread class I built. I currently work on enhancement of my application Playlist Editor (see http://www.lightdev.com/page74.htm) and a new release will be available soon.
Among other extensions the new release will have a title filter function which is based on audio data that is recursively read from ID3 tags of files found in a given root directory. The data collection is done by a CollectionThread class which reads into a data model class AudioDataModel and the entire process works fine, no problem with that.
However, when my application is started for the first time the CollectionThread runs approximately 3 minutes to collect data from approximately 4300 audio files on an Intel Pentium M 1,4 GHz, 512 MB RAM, Windows XP SP2. When the application is shut down and started again, it takes only a few seconds to do the same task for all subsequent launches.
I already tried to start the application with java option -Xms40m to increase initial heap size. This increases performance in general but the effect is still the same, i.e. first run lasts significantly longer than subsequent runs.
I also tried to build a pool mechanism which creates many empty objects in the data model and then releases them to contain the actual data at is being read in but this did not lead to better performance.
It must have to do with how Java (or Windows?) allocates and caches memory. I wonder whether there is a way to pre-allocate memory or if there are any other ideas to improve performance so that the process always only takes seconds instead of minutes?
I attach the key classes to this message. Any help or ideas is much appreciated!
Thanks a lot a best regards
Ulrich
PS: You can use the news subscription service at
http://www.lightdev.com/dynTemplate.php4?id=80&dynPage=subscribe.php4 to be informed when the new release of Playlist Editor is available.
All classes posted here do not need debugging, they already have proven to run error free. The classes are only posted for information for the interested reader - no need to go through all the stuff in detail - only if it interests you.
My application calls class CollectionThread wich is a subclass of InfoThread. CollectionThread recursively goes through a directory and file structure and stores found ID3 tag information in instances of class ID3v11Tag which in turn gets stored in one instance of class AudioDataModel. All classes are shown below.
This is the mentioned CollectionThread
* Light Development Playlist Editor
* Copyright (C) 2004 Ulrich Hilger
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
package com.lightdev.app.playlisteditor.data;
import com.lightdev.lib.util.InfoThread;
import java.io.File;
* A class to collect audio data from a given storage location.
* <p>
* <code>CollectionThread</code> uses ID3 tag information to gain data.
* </p>
* <p>See <a href="http://www.id3.org">http://www.id3.org</a> for details about
* ID3 tags.</p>
* @author Ulrich Hilger
* @author Light Development
* @author <a href="http://www.lightdev.com">http://www.lightdev.com</a>
* @author <a href="mailto:[email protected]">[email protected]</a>
* @author published under the terms and conditions of the
* GNU General Public License,
* for details see file gpl.txt in the distribution
* package of this software as well as any licensing notes
* inside this documentation
* @version 1, October 13, 2004
public class CollectionThread extends InfoThread {
* constructor
* @param model AudioDataModel the data model to collect data to
public CollectionThread(AudioDataModel model) {
this.model = model;
* constructor, creates a new empty AudioDataModel
public CollectionThread() {
this(new AudioDataModel());
* set the data model to collect data to
* @param model AudioDataModel the model to collect data to
public void setModel(AudioDataModel model) {
this.model = model;
* get the data model associated to this thread
* @return AudioDataModel the data model
public AudioDataModel getModel() {
return model;
* set the directory to collect data from
* @param rootDir File the directory to collect data from
public void setRootDirectory(File rootDir) {
this.rootDir = rootDir;
* do te actual work of this thread, i.e. iterate through a given directory
* structure and collect audio data
* @return boolean true, if work is left
protected boolean work() {
boolean workIsLeft = true;
maxValue = -1;
filesProcessed = 0;
if(getStatus() < STATUS_HALT_PENDING) {
countElements(rootDir.listFiles());
if(getStatus() < STATUS_HALT_PENDING) {
workIsLeft = collect(rootDir.listFiles());
return workIsLeft;
* count the elements in a given file array including its subdirectories
* @param files File[]
private void countElements(File[] files) {
int i = 0;
while (i < files.length && getStatus() < STATUS_HALT_PENDING) {
File file = files;
if (file.isDirectory()) {
countElements(file.listFiles());
i++;
maxValue++;
* recursively read data into model
* @param files File[] the file array representing the content of a given directory
private boolean collect(File[] files) {
int i = 0;
while(i < files.length && getStatus() < STATUS_HALT_PENDING) {
File file = files[i];
if(file.isDirectory()) {
collect(file.listFiles());
else if(file.getName().toLowerCase().endsWith("mp3")) {
try {
model.addTrack(file);
catch(Exception e) {
fireThreadException(e);
i++;
filesProcessed++;
fireThreadProgress(filesProcessed);
return (i<files.length);
/** the directory to collect data from */
private File rootDir;
/** the data model to collect data to */
private AudioDataModel model;
/** the number of files this thread processed so far while it is running */
private long filesProcessed = 0;
This is class InfoThread
* Light Development Java Library
* Copyright (C) 2003, 2004 Ulrich Hilger
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
package com.lightdev.lib.util;
import java.util.Vector;
import java.util.Enumeration;
* Abstract class <code>InfoThread</class> implements a status and listener concept.
* An <code>InfoThread</code> object actively informs all objects registered as listeners about
* status changes, progress and possible exceptions. This way the status of a running
* thread does not require a polling mechanism to be monitored.
* <p>
* <code>InfoThread</code> implements the following working scheme
* </p>
* @author Ulrich Hilger
* @author Light Development
* @author <a href="http://www.lightdev.com">http://www.lightdev.com</a>
* @author <a href="mailto:[email protected]">[email protected]</a>
* @author published under the terms and conditions of the
* GNU General Public License,
* for details see file gpl.txt in the distribution
* package of this software
* @version Version 1, October 13, 2004
public abstract class InfoThread extends Thread {
* construct an <code>InfoThread</code> object
* <p>This class is meant to be used when a <code>Thread</code> object is needed that actively
* informs other objects about its status</code>. It is a good idea therefore to register
* one or more listeners with instances of this class before doing anything
* else.</p>
* @see addInfoThreadListener
public InfoThread() {
* set the amount of time this thread shall idle after it is through with one
* work cycle and before a next work cycle is started. This influences the time
* other threads have for their work.
* @param millis long the number of milliseconds to idle after one work cycle
public void setIdleMillis(long millis) {
idleMillis = millis;
* Causes this thread to begin execution; the Java Virtual Machine calls the <code>run</code>
* method of this thread. Calls method <code>prepareThread</code> before calling
* <code>run</code>.
* @see run
* @see prepareThread
public synchronized void start() {
setStatus(STATUS_INITIALIZING);
prepareThread();
setStatus(STATUS_READY);
super.start();
* call method <code>start</code> instead of this method.
* calling this method directly will lead to an exception
* @see start
public void run() {
//System.out.println("InfoThread.run");
if (status == STATUS_READY) {
boolean workIsLeft = true;
setStatus(STATUS_RUNNING);
while (status < STATUS_STOP_PENDING && workIsLeft) {
if (status < STATUS_HALT_PENDING) {
workIsLeft = work();
if(!workIsLeft) {
setStatus(STATUS_WORK_COMPLETE);
if (status == STATUS_HALT_PENDING) {
setStatus(STATUS_HALTED);
else if (status == STATUS_STOP_PENDING) {
setStatus(STATUS_STOPPED);
else {
try {
sleep(idleMillis);
catch (InterruptedException e) {
fireThreadException(e);
else {
// error: Thread is not ready to run
setStatus(STATUS_THREAD_FINISHED);
* stop this thread. This will terminate the thread irrevokably. Use method
* <code>haltThread</code> to pause a thread with the possiblity to resume work later.
* @see haltThread
public void stopThread() {
switch (status) {
case STATUS_RUNNING:
setStatus(STATUS_STOP_PENDING);
break;
case STATUS_HALT_PENDING:
// exception: the thread already is about to halt
break;
case STATUS_STOP_PENDING:
// exception: the thread already is about to stop
break;
default:
// exception: a thread can not be stopped, when it is not running
break;
* halt this thread, i.e. pause working allowing to resume later
* @see resumeThread
public void haltThread() {
switch (status) {
case STATUS_RUNNING:
setStatus(STATUS_STOP_PENDING);
break;
case STATUS_HALT_PENDING:
// exception: the thread already is about to halt
break;
case STATUS_STOP_PENDING:
// exception: the thread already is about to stop
break;
default:
// exception: a thread can not be halted, when it is not running
break;
* resume this thread, i.e. resume previously halted work
* @see haltThread
public void resumeThread() {
if(status == STATUS_HALTED || status == STATUS_HALT_PENDING) {
setStatus(STATUS_RUNNING);
else {
// exception: only halted threads or threads that are about to halt can be resumed
* this is the method to prepare a thread to run. It is not implemented in this abstract
* class. Subclasses of <code>InfoThread</code> can implement this method to do anything
* that might be required to put their thread into STATUS_READY. This method is called
* automatically by method <code>start</code>. When implementing this method, it should
* call method <code>fireThreadException</code> accordingly.
* @see start
* @see fireThreadException
protected void prepareThread() {
// does nothing in this abstract class but might be needed in subclasses
* this is the main activity method of this object. It is not implemented in this abstract
* class. Subclasses of <code>InfoThread</code> must implement this method to do something
* meaningful. When implementing this method, it should call methods
* <code>fireThreadProgress</code> and <code>fireThreadException</code> accordingly.
* @return boolean true, if work is left, false if not
* @see fireThreadProgress
* @see fireTreadException
protected abstract boolean work();
* add an <code>InfoTreadListener</code> to this instance of <code>InfoThread</code>
* @param l InfoThreadListener the listener to add
* @see removeInfoThreadListener
public void addInfoThreadListener(InfoThreadListener l) {
listeners.add(l);
* remove an <code>InfoTreadListener</code> from this instance of <code>InfoThread</code>
* @param l InfoThreadListener the listener to remove
public void removeInfoThreadListener(InfoThreadListener l) {
listeners.remove(l);
* notify all <code>InfoThreadListener</code>s of a status change
* @param fromStatus int the status tis thread had before the change
* @param toStatus int the status this thread has now
protected void fireThreadStatusChanged(int fromStatus, int toStatus) {
Enumeration e = listeners.elements();
while(e.hasMoreElements()) {
Object l = e.nextElement();
if(l instanceof InfoThreadListener) {
((InfoThreadListener) l).threadStatusChanged(this, fromStatus, toStatus);
* notify all <code>InfoThreadListener</code>s of an exception in this thread
* @param ex Exception the exception that occurred
protected void fireThreadException(Exception ex) {
Enumeration e = listeners.elements();
while(e.hasMoreElements()) {
Object l = e.nextElement();
if(l instanceof InfoThreadListener) {
((InfoThreadListener) l).threadException(this, ex);
* notify all <code>InfoThreadListener</code>s of the progress of this thread
* @param progressValue long a value indicating the current thread progress
protected void fireThreadProgress(long progressValue) {
Enumeration e = listeners.elements();
while(e.hasMoreElements()) {
Object l = e.nextElement();
if(l instanceof InfoThreadListener) {
((InfoThreadListener) l).threadProgress(this, progressValue, maxValue);
* set the status of this thread and notify all listeners
* @param newStatus int the status this thread is to be changed to
private void setStatus(int newStatus) {
//System.out.println("InfoThread.setStatus oldStatus=" + status + ", newStatus=" + newStatus);
int fromStatus = status;
status = newStatus;
fireThreadStatusChanged(fromStatus, newStatus);
* get the current status of this thread
* @return int the status
public int getStatus() {
return status;
* cleanup before actual destruction.
public void destroy() {
//System.out.println("InfoThread.destroy");
cleanup();
super.destroy();
* cleanup all references this thread maintains
private void cleanup() {
//System.out.println("InfoThread.cleanup");
listeners.removeAllElements();
listeners = null;
/* ----------------------- class fields start ------------------------ */
/** storage for the objects this thread notifies about status changes and progress */
private Vector listeners = new Vector();
/** indicator for the status of this thread */
private int status = STATUS_NONE;
/** maximum value for threadProgress */
protected long maxValue = -1;
/** the idle time inside one work cycle in milliseconds */
protected long idleMillis = 1;
/* ----------------------- class fields end -------------------------- */
/* ----------------------- constants start --------------------------- */
/** constant value indicating that no status has been set so far */
public static final int STATUS_NONE = 0;
/** constant value indicating that the thread is currently initializing */
public static final int STATUS_INITIALIZING = 1;
/** constant value indicating that the thread is ready to run */
public static final int STATUS_READY = 2;
/** constant value indicating that the thread is running */
public static final int STATUS_RUNNING = 3;
/** constant value indicating that the thread is about to halt */
public static final int STATUS_HALT_PENDING = 4;
/** constant value indicating that the thread is halted */
public static final int STATUS_HALTED = 5;
/** constant value indicating that the work of this thread is complete */
public static final int STATUS_WORK_COMPLETE = 6;
/** constant value indicating that the thread is about to stop */
public static final int STATUS_STOP_PENDING = 7;
/** constant value indicating that the thread is stopped */
public static final int STATUS_STOPPED = 8;
/** constant value indicating that the thread is finished */
public static final int STATUS_THREAD_FINISHED = 9;
/* ----------------------- constants end --------------------------- */
}this is the InfoThreadListener interface
* Light Development Java Library
* Copyright (C) 2003, 2004 Ulrich Hilger
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
package com.lightdev.lib.util;
* An interface classes interested to receive events from objects
* of class <code>InfoThread</code> need to implement.
* @author Ulrich Hilger
* @author Light Development
* @author <a href="http://www.lightdev.com">http://www.lightdev.com</a>
* @author <a href="mailto:[email protected]">[email protected]</a>
* @author published under the terms and conditions of the
* GNU General Public License,
* for details see file gpl.txt in the distribution
* package of this software
* @version Version 1, October 13, 2004
public interface InfoThreadListener {
* method to receive a status change notification from a thread
* @param thread InfoThread the thread which status changed
* @param fromStatus int the status which the thread had before the change
* @param toStatus int the status which the thread has now
public void threadStatusChanged(InfoThread thread, int fromStatus, int toStatus);
* method to receive a notification about the progress of a thread
* @param thread InfoThread the thread which notified about its progress
* @param progressValue long the value (e.g. 10 if 100 percent completed, 20 of 1 million files processed, etc.)
public void threadProgress(InfoThread thread, long progressValue, long maxValue);
* method to receive a notifiaction about the fact that an exception occurred in a thread
* @param thread InfoThread the thread for which an exception occurred
* @param e Exception the exception that occurred
public void threadException(InfoThread thread, Exception e);
}This is class AudioFileDescriptor
* Light Development Java Library
* Copyright (C) 2004 Ulrich Hilger
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
package com.lightdev.lib.audio;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.RandomAccessFile;
import java.io.Serializable;
import java.text.DecimalFormat;
* This class models characteristics of an audio file such as the absolute path
* of the file, its tag contents (if any) and the play duration, etc.
* <p>See <a href="http://www.id3.org">http://www.id3.org</a> for details about
* ID3 tags.</p>
* @author Ulrich Hilger
* @author Light Development
* @author <a href="http://www.lightdev.com">http://www.lightdev.com</a>
* @author <a href="mailto:[email protected]">[email protected]</a>
* @author published under the terms and conditions of the
* GNU General Public License,
* for details see file gpl.txt in the distribution
* package of this software
* @version Version 1, October 13, 2004
public class AudioFileDescriptor implements Serializable, Comparable {
public AudioFileDescriptor(String absolutePath) throws FileNotFoundException, IOException {
load(absolutePath);
public boolean equals(Object o) {
if(o != null && o instanceof AudioFileDescriptor) {
return ((AudioFileDescriptor) o).getAbsolutePath().equalsIgnoreCase(this.getAbsolutePath());
else {
return false;
public void load(String absolutePath) throws FileNotFoundException, IOException {
this.absolutePath = absolutePath;
RandomAccessFile rf = new RandomAccessFile(absolutePath, "r");
if(id3v11Tag == null) {
id3v11Tag = new ID3v11Tag(rf, false);
else {
id3v11Tag.readTag(rf, rf.length() - 128);
rf.close();
public String getAbsolutePath() {
return absolutePath;
public ID3v11Tag getID3v11Tag() {
return id3v11Tag;
public void setID3v11Tag(ID3v11Tag tag) {
this.id3v11Tag = tag;
public String toString() {
DecimalFormat df = new DecimalFormat("00");
return id3v11Tag.getArtist() + ", " + id3v11Tag.getAlbum() + " - " +
df.format(id3v11Tag.getTrackNumber()) + " " + id3v11Tag.getTitle();
* Compares this object with the specified object for order.
* @param o the Object to be compared.
* @return a negative integer, zero, or a positive integer as this object is less than, equal to,
* or greater than the specified object.
* @todo Implement this java.lang.Comparable method
public int compareTo(Object o) {
return toString().compareTo(o.toString());
private String absolutePath;
private ID3v11Tag id3v11Tag;
private transient long duration = -1;
private transient int type = TYPE_UNKNOWN;
public static final transient int TYPE_UNKNOWN = 0;
public static final transient int TYPE_MP3 = 1;
}This is class ID3V11Tag into which the data is actually stored
* Light Development Java Library
* Copyright (C) 2004 Ulrich Hilger
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
package com.lightdev.lib.audio;
import java.io.File;
import java.io.RandomAccessFile;
import java.io.IOException;
import java.io.Serializable;
import java.text.DecimalFormat;
* This class is a very simple implementation of an ID3v11Tag. It models an ID3 tag
* pretty much the same way as it is physically stored inside an audio file.
* <p>See <a href="http://www.id3.org">http://www.id3.org</a> for details about
* ID3 tags.</p>
* @author Ulrich Hilger
* @author Light Development
* @author <a href="http://www.lightdev.com">http://www.lightdev.com</a>
* @author <a href="mailto:[email protected]">[email protected]</a>
* @author published under the terms and conditions of the
* GNU General Public License,
* for details see file gpl.txt in the distribution
* package of this software
* @version Version 1, October 13, 2004
public class ID3v11Tag implements Serializable, Comparable {
* construct an ID3v11Tag and read tag content from a given file
* <p>This constructor can be used for cases where a RandomAccessFile has already
* been opened and will be closed elsewhere</p>
* @param rf RandomAccessFile the open file to read from
* @param isAtTagStartPos boolean true, if the file pointer is at the
* position where the ID3 tag starts; when false, the pointer is positioned accordingly here
* @throws IOException
public ID3v11Tag(RandomAccessFile rf, boolean isAtTagStartPos) throws IOException {
if(isAtTagStartPos) {
readTag(rf);
else {
readTag(rf, rf.length() - 128);
* construct an ID3v11Tag and read tag content from a file at a given location
* <p>This constructor opens and closes the audio file for reading</p>
* @param absolutePath String the absolute path to the audio file to open
* @throws IOException
public ID3v11Tag(String absolutePath) throws IOException {
RandomAccessFile rf = new RandomAccessFile(absolutePath, "r");
readTag(rf, rf.length() - 128);
rf.close();
* construct an ID3v11Tag and read tag content from a given file
* <p>This constructor opens and closes the audio file for reading</p>
* @param audioFile File the audio file to read from
* @throws IOException
public ID3v11Tag(File audioFile) throws IOException {
this(audioFile.getAbsolutePath());
* get a string representation of this object
* @return String
public String toString() {
DecimalFormat df = new DecimalFormat("00");
return getArtist() + ", " + getAlbum() + " - " + df.format(getTrackNumber()) + " " + getTitle();
* position to file pointer and read the tag
* @param rf RandomAccessFile the file to read from
* @param jumpPos long the position to jump to (the tag start position)
* @throws IOException
public void readTag(RandomAccessFile rf, long jumpPos) throws IOException {
rf.seek(jumpPos);
readTag(rf);
* read the tag from a given file, assuming the file pointer to be at the tag start position
* @param rf RandomAccessFile the file to read from
* @throws IOException
public void readTag(RandomAccessFile rf) throws IOException {
rf.read(tagBuf);
if(tag.equalsIgnoreCase(new String(tagBuf))) {
rf.read(title);
rf.read(artist);
rf.read(album);
rf.read(year);
rf.read(comment);
rf.read(trackNo);
rf.read(genre);
public String getTitle() {
return new String(title).trim();
public String getArtist() {
return new String(artist).trim();
public String getAlbum() {
return new String(album).trim();
public String getYear() {
return new String(year).trim();
public String getComment() {
return new String(comment).trim();
public int getGenreId() {
try {
int id = new Byte(genre[0]).intValue();
if(id < GENRE_ID_MIN || id > GENRE_ID_MAX) {
return GENRE_ID_OTHER;
else {
return id;
catch(Exception ex) {
return GENRE_ID_OTHER;
public String getGenreName() {
return genreNames[getGenreId()];
public int getTrackNumber() {
try {
return (int) trackNo[0];
catch(Exception e) {
return 0;
* Compares this object with the specified object for order.
* @param o the Object to be compared.
* @return a negative integer, zero, or a positive integer as this object is less than, equal to,
*Hi Franck,
thank you, mate. I did what you suggested (changed class attached) but that did not change the mentioned behaviour.
The first run is approximately 75 seconds with Java option -Xms40m and approx. double without, the second run and all subsequent runs are only 2-3 seconds each (!!!) even when terminating and re-starting the application between thread runs.
I'm pretty clueless about that, any more help on this anyone?
Thanks a lot and best regards
Ulrich
PS: BTW, I forgot to post the class that is filled with data by class CollectionThread, so here it is
* Light Development Playlist Editor
* Copyright (C) 2004 Ulrich Hilger
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
package com.lightdev.app.playlisteditor.data;
import java.io.File;
import com.lightdev.lib.audio.ID3v11Tag;
import javax.sound.sampled.UnsupportedAudioFileException;
import java.io.IOException;
import java.io.Serializable;
import com.lightdev.lib.audio.AudioFileDescriptor;
import com.lightdev.lib.ui.SortListModel;
import java.util.Iterator;
* Storage model for audio data.
* <p>
* <code>AudioDataModel</code> can be used to store ID3 tag data collected from
* a directory with audio files to perform queries and reports on the found data.
* </p>
* <p>See <a href="http://www.id3.org">http://www.id3.org</a> for details about
* ID3 tags.</p>
* @author Ulrich Hilger
* @author Light Development
* @author <a href="http://www.lightdev.com">http://www.lightdev.com</a>
* @author <a href="mailto:[email protected]">[email protected]</a>
* @author published under the terms and conditions of the
* GNU General Public License,
* for details see file gpl.txt in the distribution
* package of this software as well as any licensing notes
* inside this documentation
* @version 1, October 15, 2004
public class AudioDataModel extends SortListModel implements Serializable {
* constructor
public AudioDataModel() {
* add an audio track from a given audio file
* <p>This will attempt to read ID3 tag data from the file.</p>
* @param audioFile File the file to add audio data for
* @throws IOException
public void addTrack(File audioFile) throws IOException {
AudioFileDescriptor afd = new AudioFileDescriptor(audioFile.getAbsolutePath());
if (!data.contains(afd)) {
data.add(afd);
* get all tracks for agiven combination of genre name, artist name and album name. Any of
* the parameters may be null or AudioDataModel.FILTER_ALL
* <p>Ugly code, I know, but it simply hard codes all combinations of the the mentioned
* parameters. Any more elegant implementations welcome.</p>
* @param genreName String a genre name to get tracks for
* @param artistName String an artist name to get tracks for
* @param albumName String an album name to get tracks for
* @return SortListModel the found tracks in a list model
public SortListModel getTracks(String genreName, String artistName, String albumName) {
SortListModel foundTracks = new SortListModel();
Iterator e = data.iterator();
while(e.hasNext()) {
AudioFileDescriptor afd = (AudioFileDescriptor) e.next();
ID3v11Tag tag = afd.getID3v11Tag();
if(genreName == null || genreName.equalsIgnoreCase(FILTER_ALL)) {
if(artistName == null || artistName.equalsIgnoreCase(FILTER_ALL)) {
if (tag.getAlbum().equalsIgnoreCase(albumName))
foundTracks.add(afd);
else {
if(albumName == null || albumName.equalsIgnoreCase(FILTER_ALL)) {
if (tag.getArtist().equalsIgnoreCase(artistName))
foundTracks.add(afd);
else {
if (tag.getArtist().equalsIgnoreCase(artistName) &&
tag.getAlbum().equalsIgnoreCase(albumName))
foundTracks.add(afd);
else {
if(artistName == null || artistName.equalsIgnoreCase(FILTER_ALL)) {
if(albumName == null || albumName.equalsIgnoreCase(FILTER_ALL)) {
if (tag.getGenreName().equalsIgnoreCase(genreName))
foundTracks.add(afd);
else {
if (tag.getGenreName().equalsIgnoreCase(genreName) &&
tag.getAlbum().equalsIgnoreCase(albumName))
foundTracks.add(afd);
else {
if(albumName == null || albumName.equalsIgnoreCase(FILTER_ALL)) {
if (tag.getGenreName().equalsIgnoreCase(genreName) &&
tag.getArtist().equalsIgnoreCase(artistName))
foundTracks.add(afd);
else {
if (tag.getGenreName().equalsIgnoreCase(genreName) &&
tag.getArtist().equalsIgnoreCase(artistName) &&
tag.getAlbum().equalsIgnoreCase(albumName))
foundTracks.add(afd);
foundTracks.sort();
return foundTracks;
* list all artists in this model
* @return SortListModel
public SortListModel listArtists() {
SortListModel artists = new SortListModel();
artists.add(FILTER_ALL);
Iterator e = data.iterator();
while (e.hasNext()) {
ID3v11Tag tag = ((AudioFileDescriptor) e.next()).getID3v11Tag();
String artistName = tag.getArtist();
if (artists.indexOf(artistName) < 0) {
artists.add(artistName);
artists.sort();
return artists;
* list all artists in this model having titles belonging to a given genre
* @param genreName String name of the genre artists are searched for
* @return SortListModel
public SortListModel listArtists(String genreName) {
SortListModel artists = new SortListModel();
artists.add(FILTER_ALL);
Iterator e = data.iterator();
while (e.hasNext()) {
ID3v11Tag tag = ((AudioFileDescriptor) e.next()).getID3v11Tag();
String artistName = tag.getArtist();
String genre = tag.getGenreName();
if (artists.indexOf(artistName) < 0 && genre.equalsIgnoreCase(genreName)) {
artists.add(artistName);
artists.sort();
return artists;
* list all genres in this model
* @return SortListModel
public SortListModel listGenres() {
SortListModel genres = new SortListModel();
genres.add(FILTER_ALL);
Iterator e = data.iterator();
while (e.hasNext()) {
ID3v11Tag tag = ((AudioFileDescriptor) e.next()).getID3v11Tag();
String genreName = tag.getGenreName();
if (genres.indexOf(genreName) < 0) {
genres.add(genreName);
genres.sort();
return genres;
* list all albums in this model
* @return SortListModel
public SortListModel listAlbums() {
SortListModel albums = new SortListModel();
albums.add(FILTER_ALL);
Iterator e = data.iterator();
while (e.hasNext()) {
ID3v11Tag tag = ((AudioFileDescriptor) e.next()).getID3v11Tag();
String albumName = tag.getAlbum();
if (albums.indexOf(albumName) < 0) {
albums.add(albumName);
albums.sort();
return albums;
* list all albums in this model having titles belonging to a given genre
* @param genreName String name of the genre albums are searched for
* @return SortListModel
public SortListModel listAlbums(String genreName) {
SortListModel albums = new SortListModel();
albums.add(FILTER_ALL);
Iterator e = data.iterator();
while (e.hasNext()) {
ID3v11Tag tag = ((AudioFileDescriptor) e.next()).getID3v11Tag();
String albumName = tag.getAlbum();
String genre = tag.getGenreName();
if (albums.indexOf(albumName) < 0 && genre.equalsIgnoreCase(genreName)) {
albums.add(albumName);
albums.sort();
return albums;
* list all albums in this model having titles belonging to a given genre and artist
* @param genreName String name of the genre albums are searched for
* @param artistName String name of the artist albums are searched for
* @return SortListModel
public SortListModel listAlbums(String genreName, String artistName) {
SortListModel albums = new SortListModel();
albums.add(FILTER_ALL);
Iterator e = data.iterator();
while (e.hasNext()) {
ID3v11Tag tag = ((AudioFileDescriptor) e.next()).getID3v11Tag();
String albumName = tag.getAlbum();
String genre = tag.getGenreName();
String artist = tag.getArtist();
if(genreName == null || genreName.equalsIgnoreCase(FILTER_ALL)) {
if (albums.indexOf(albumName) < 0 &&
artist.equalsIgnoreCase(artistName))
albums.add(albumName);
else {
if (albums.indexOf(albumName) < 0 &&
genre.equalsIgnoreCase(genreName) &&
artist.equalsIgnoreCase(artistName))
albums.add(albumName);
albums.sort();
return albums;
* get the number of audio tracks stored in this data model
* @return int the number of tracks
public int getTrackCount() {
return data.size();
/** constant to select all items of a given part */
public static final String FILTER_ALL = " all";
}...and here the changed CollectionThread now caching found File objects in a vector
* Light Development Playlist Editor
* Copyright (C) 2004 Ulrich Hilger
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
package com.lightdev.app.playlisteditor.data;
import com.lightdev.lib.util.InfoThread;
import java.io.File;
import java.util.Vector;
import java.util.Enumeration;
* A class to collect audio data from a given storage location.
* <p>
* <code>CollectionThread</code> uses ID3 tag information to gain data.
* </p>
* <p>See <a href="http://www.id3.org">http://www.id3.org</a> for details about
* ID3 tags.</p>
* @author Ulrich Hilger
* @author Light Development
* @author <a href="http://www.lightdev.com">http://www.lightdev.com</a>
* @author <a href="mailto:[email protected]">[email protected]</a>
* @author published under the terms and conditions of the
* GNU General Public License,
* for details see file gpl.txt in the distribution
* package of this software as well as any licensing notes
* inside this documentation
* @version 1, October 13, 2004
public class CollectionThread extends InfoThread {
* constructor
* @param model AudioDataModel the data model to collect data to
public CollectionThread(AudioDataModel model) {
this.model = model;
* constructor, creates a new empty AudioDataModel
public CollectionThread() {
this(new AudioDataModel());
* set the data model to collect data to
* @param model AudioDataModel the model to collect data to
public void setModel(AudioDataModel model) {
this.model = model;
* get the data model associated to this thread
* @return AudioDataModel the data model
public AudioDataModel getModel() {
return model;
* set the directory to collect data from
* @param rootDir File the directory to collect data from
public void setRootDirectory(File rootDir) {
this.rootDir = rootDir;
* this is the method to prepare a thread to run.
protected void prepareThread() {
maxValue = -1;
filesProcessed = 0;
innerCount = 0;
fileList = new Vector();
* do the actual work of this thread, i.e. iterate through a given directory
* structure and collect audio data
* @return boolean true, if work is left
protected boolean work() {
boolean workIsLeft = true;
if(getStatus() < STATUS_HALT_PENDING) {
countElements(rootDir.listFiles());
if(getStatus() < STATUS_HALT_PENDING) {
workIsLeft = collect(); //collect(rootDir.listFiles());
fileList.clear();
fileList = null;
return workIsLeft;
* count the elements in a given file array including its subdirectories
* @param files File[]
private void countElements(File[] files) {
int i = 0;
while (i < files.length && getStatus() < STATUS_HALT_PENDING) {
File file = files;
if (file.isDirectory()) {
countElements(file.listFiles());
else {
fileList.add(file);
i++;
maxValue++;
* read data into model
* @param files File[] the file array representing the content of a given directory
* @return boolean true, if work is left
private boolean collect(/*File[] files*/) {
Enumeration files = fileList.elements();
while(files.hasMoreElements() && getStatus() < STATUS_HALT_PENDING) {
File file = (File) files.nextElement();
try {
model.addTrack(file);
catch(Exception e) {
fireThreadException(e);
filesProcessed++;
if(++innerCount > 99) {
innerCount = 0;
fireThreadProgress(filesProcessed);
return false;
int i = 0;
while(i < files.length && getStatus() < STATUS_HALT_PENDING) {
File file = files[i];
if(file.isDirectory()) {
collect(file.listFiles());
else if(file.getName().toLowerCase().endsWith("mp3")) {
try {
model.addTrack(file);
catch(Exception e) {
fireThreadException(e);
i++;
filesProcessed++;
fireThreadProgress(filesProcessed);
return (i<files.length);
/** the directory to collect data from */
private File rootDir;
/** the data model to collect data to */
private AudioDataModel model;
/** the number of files this thread processed so far while it is running */
private long filesProcessed = 0;
/** a list to temporary store found files */
private Vector fileList;
/** counter to determine when to fire progress messages */
private int innerCount = 0; -
Letter/report generation...morgalr, i need your help!!
may i know the details or some sample source code of how to generate the html and import it to MS Word...i need your help urgently...may i have your email to contact u?.....please help, it is urgent!!!
You need not use an applet to write an HTML file, any application file will do fine, actually applications may be prefered due to system security and file creation. Basically the html files are just text files using HTML. Look at any book on HTML and you will be able to get the style and form down along with the syntax.
As for calling MS word, do a search on the web for a product called JPrint. It is done by a company called Neva and they also have a product called "coroutine". It is coroutine that you want. Coroutine is a native level interface for Java to Comm. The docs that come with coroutine should be saficient to get you going on the project. -
Anybody who can help me? I really need your help
I've tried to execute J2ee tutorial examples.
I don't know why this sample didn't execute...I've already finished to set up J2EE and enviornment variables.
I was trying this part from j2ee tutorial titled as "Packing Web modules".
Whenever I type "asant create-war" to make web modules in command window. I always got error.
Packaging Web Modules(From J2ee tutorial for your information)
A web module must be packaged into a WAR in certain deployment scenarios and whenever you want to distribute the web module. You package a web module into a WAR using the Application Server deploytool utility, by executing the jar command in a directory laid out in the format of a web module, or by using the asant utility. This tutorial allows you to use use either the first or the third approach. To build the hello1 application, follow these steps:
In a terminal window, go to <INSTALL>/j2eetutorial14/examples/web/hello1/.
Run asant build. This target will spawn any necessary compilations and will copy files to the <INSTALL>/j2eetutorial14/examples/web/hello1/build/ directory.
To package the application into a WAR named hello1.war using asant, use the following command:
asant create-war
This command uses web.xml and sun-web.xml files in the <INSTALL>/j2eetutorial14/examples/web/hello1 directory.
To learn how to configure this web application, package the application using deploytool by following these steps:
Start deploytool.
Create a web application called hello1 by running the New Web Component wizard. Select FileNewWeb Component.
In the New Web Component wizard:
Select the Create New Stand-Alone WAR Module radio button.
In the WAR File field, enter <INSTALL>/j2eetutorial14/examples/web/hello1/hello1.war. The WAR Display Name field will show hello1.
In the Context Root field, enter /hello1.
Click Edit Contents to add the content files.
In the Edit Contents dialog box, navigate to <INSTALL>/j2eetutorial14/examples/web/hello1/build/. Select duke.waving.gif, index.jsp, and response.jsp and click Add. Click OK.
Click Next.
Select the No Component radio button and click Next.
Click Finish.
Select FileSave.
A sample hello1.war is provided in <INSTALL>/j2eetutorial14/examples/web/provided-wars/. To open this WAR with deploytool, follow these steps:
Select FileOpen.
Navigate to the provided-wars directory.
Select the WAR.
Click Open Module.
I guess this step is for checking my system about setup information. I not sure how to change it.
the result from execution of ansnt command in dos
D:\J2ee\j2ee-1_4-doc-tutorial_7\j2eetutorial14\examples\web\hello1>asant create- war Buildfile: build.xml
j2ee-home-test:
BUILD FAILED D:\J2ee\j2ee-1_4-doc-tutorial_7\j2eetutorial14\examples\common\targets.xml:10: T he j2ee.home property is not properly set in <INSTALL>/j2eetutorial14/examples/c ommon/build.properties.
Set the j2ee.home property to the location of your Application Server installati on.
On Windows, you must escape any backslashes in the j2ee.home property with anoth er backslash or use forward slashes as a path separator. So, if your Application Server installation is C:\Sun\AppServer, you must set j2ee.home as follows:
j2ee.home = C:\\Sun\\AppServer
or
j2ee.home=C:/Sun/AppServer
j2ee.home is currently set to:
Total time: 0 seconds
D:\J2ee\j2ee-1_4-doc-tutorial_7\j2eetutorial14\examples\web\hello1>
I've installed J2ee sdk in C:\Sun\AppServer
PATH: %J2EE_HOME%\bin;%JAVA_HOME%\bin;
CLASSPATH: %J2EE_HOME%\lib\j2ee.jar;C:\Java\jre1.6.0_05\lib\ext\QTJava.zip;C:\oraclexe\app\oracle\product\10.2.0\server\jdbc\lib\ojdbc14.jar
J2EE_HOME: C:\Sun\AppServer
JAVA_HOME: C:\Sun\AppServer\jdk
I've installed J2ee with administration 4848, HTTP: 8089 HTTP: 8090
I guess this could refer the target.xml and build.properties. So, I've tried after changing some value, which is fit for my setup.
but, still doesn't work.
targets.xml
<path id="classpath">
<fileset dir="${j2ee.home}/lib">
<include name="j2ee.jar"/>
</fileset>
</path>
<target name="j2ee-home-test" >
<!-- Test if j2ee.home is set properly by looking for j2ee.jar -->
<available file="${j2ee.home}/lib/j2ee.jar" type="file" property="j2ee.jar.present" />
<fail unless="j2ee.jar.present">
The j2ee.home property is not properly set in <INSTALL>/j2eetutorial14/examples/common/build.properties.
Set the j2ee.home property to the location of your Application Server installation.
On Windows, you must escape any backslashes in the j2ee.home property with another backslash or use forward slashes as a path separator. So, if your Application Server installation is C:\Sun\AppServer, you must set j2ee.home as follows:
j2ee.home = C:\\Sun\\AppServer
or
j2ee.home=C:/Sun/AppServer
j2ee.home is currently set to: ${j2ee.home}
</fail>
</target>
<target name="clean" >
<delete dir="${build}" />
<delete dir="${dist}" />
<delete dir="${assemble}" />
<delete file="${ear.name}" />
<delete file="${war.name}" />
<delete file="${war.file}" />
<delete file="${client.jar.name}" />
</target>
<path id="db.classpath">
<fileset dir="${db.root}/lib">
<include name="*.jar"/>
</fileset>
</path>
<target name="create-db_common"
depends="init,start-db,delete-db"
description="Create database tables and populate database." >
<sql driver="${db.driver}"
url="${db.url}"
userid="${db.user}"
password="${db.password}"
classpathref="db.classpath"
delimiter="${db.delimiter}"
autocommit="false"
onerror="abort" >
<transaction src="${sql.script}"/>
</sql>
</target>
<target name="delete-db"
description="Deletes the database tables." >
<sql driver="${db.driver}"
url="${db.url}"
userid="${db.user}"
password="${db.password}"
classpathref="db.classpath"
delimiter="${db.delimiter}"
autocommit="false"
onerror="continue" >
<transaction src="${delete.sql.script}"/>
</sql>
</target>
<target name="ping-db"
description="Checks to see if Derby is running." >
<java classname="org.apache.derby.drda.NetworkServerControl"
fork="yes"
resultproperty="db.ping.result">
<jvmarg line="${db.jvmargs}" />
<arg line="ping" />
<classpath refid="db.classpath" />
</java>
<condition property="db.running">
<equals arg1="${db.ping.result}" arg2="0" />
</condition>
</target>
<target name="start-db"
unless="db.running"
description="Starts the Derby databse server."
depends="ping-db">
<sun-appserv-admin
explicitcommand="start-database" />
</target>
<target name="stop-db"
description="Stops the Derby database server."
depends="ping-db"
if="db.running">
<sun-appserv-admin
explicitcommand="stop-database" />
</target>
<target name="admin_command_common">
<echo message="Doing admin task ${admin.command}"/>
<sun-appserv-admin
command="${admin.command}"
user="${admin.user}"
passwordfile="${admin.password.file}"
host="${admin.host}"
port="${admin.port}"
asinstalldir="${j2ee.home}" />
</target>
<target name="create-jdbc-resource_common">
<antcall target="admin_command_common">
<param name="admin.command"
value="create-jdbc-resource
--connectionpoolid ${conpool.name} ${jdbc.resource.name}" />
</antcall>
</target>
<target name="delete-jdbc-resource_common">
<antcall target="admin_command_common">
<param name="admin.command"
value="delete-jdbc-resource ${jdbc.resource.name}" />
</antcall>
</target>
<target name="deploy-war">
<antcall target="admin_command_common">
<param name="admin.command"
value="deploy ${war.file}" />
</antcall>
</target>
<target name="undeploy-war">
<antcall target="admin_command_common">
<param name="admin.command"
value="undeploy ${example}" />
</antcall>
</target>
<property environment="env" />
<target name="listprops"
description="Displays values of some of the properties of this build file">
<property file="../../common/admin-password.txt" />
<echo message="Path information" />
<echo message="j2ee.home = ${j2ee.home}" />
<echo message="j2ee.tutorial.home = ${j2ee.tutorial.home}" />
<echo message="env.Path = ${env.Path}" />
<echo message="env.PATH = ${env.PATH}" />
<echo message="" />
<echo message="Classpath information" />
<echo message="classpath = ${env.CLASSPATH}" />
<echo message="" />
<echo message="Admin information" />
<echo message="admin.password = ${AS_ADMIN_PASSWORD}" />
<echo message="admin.password.file = ${admin.password.file}" />
<echo message="admin.host = ${admin.host}" />
<echo message="admin.user = ${admin.user}" />
<echo message="admin.port = ${admin.port}" />
<echo message="https.port = ${https.port}" />
<echo message="" />
<echo message="Domain information" />
<echo message="domain.resources = ${domain.resources}" />
<echo message="domain.resources.port = ${domain.resources.port}" />
<echo message="" />
<echo message="Database information" />
<echo message="db.root = ${db.root}" />
<echo message="db.driver = ${db.driver}" />
<echo message="db.host = ${db.host}" />
<echo message="db.port = ${db.port}" />
<echo message="db.sid = ${db.sid}" />
<echo message="db.url = ${db.url}" />
<echo message="db.user = ${db.user}" />
<echo message="db.pwd = ${db.pwd}" />
<echo message="url.prop = ${url.prop}" />
<echo message="ds.class = ${ds.class}" />
<echo message="db.jvmargs = ${db.jvmargs}" />
</target>
build.properties ����
j2ee.home=
j2ee.tutorial.home=
asinstall.dir=${j2ee.home}
admin.password.file=${j2ee.tutorial.home}/examples/common/admin-password.txt
admin.host=localhost
admin.user=admin
admin.port=4848
https.port=8181
domain.resources="domain.resources"
domain.resources.port=8080
# Derby configuration settings
db.delimiter=;
db.root=${j2ee.home}/derby
db.driver=org.apache.derby.jdbc.ClientDriver
db.datasource=org.apache.derby.jdbc.ClientDataSource
db.host=localhost
db.port=1527
db.sid=sun-appserv-samples
db.url=jdbc:derby://${db.host}:${db.port}/${db.sid};create=true;
db.user=APP
db.pwd=APP
db.jvmargs=-ms16m -mx32m
Is there anyone who can tell me how to change it? I really need your help....
Thank you in advance.ok,
First of all make sure your tutorial folder is installed from the root:
C:\javaeetutorial5
or
D:\javaeetutorial5
it makes things so simple.
Secondly:
set your jee tutorial home
JAVAEE.TUTORIAL.HOME =
C:/javaeetutorial5
Thirdly: check in:
C:\javaeetutorial5\examples\bp-project
make a copy of the build.properties.sample save it as build.propropties, as a property file,
edit the properties file as in:
build.properties
As follows:
# uncomment the property javaee.home, and add the path
# to your GlassFish Java EE 5 SDK installation
javaee.home=c:/Sun/SDK
javaee.tutorial.home=c:/javaeetutorial5
# Uncomment the property j2ee.server.username,
# and replace the administrator username of the app-server
javaee.server.username=admin
# Uncomment the property j2ee.server.passwordfile,
# and replace the following line to point to a file that
# contains the admin password for your app-server.
# The file should contain the password in the following line:
AS_ADMIN_PASSWORD=admin1234and so fourth. Some of the settings as the application server name is all done for you
and then test it again.
Take care of editing the property file. It can give you headache.
Note also that this is for application server 9.1 - JEE5.
eve -
IP telephony problem in a big shop | Need your help
Hello everybody,
I have an issue to solve regarding an IP telephony problem. My company will send me to France to fix this problem. But most of my knowledge are in routing and switching, I have almost no knowledge in IP telephony ( Theory only). I think the problem is not really difficult but I still need your advices to know where to start and what to do.
Futher down is a summary of the e-mails I received from the shop in France from the employees who are working there. France Telecom is the ISP.
1 e-mail:The problem is the connection between the ISDN lines provided by France Telecom and the IPBX installed by our shop.
2 e-mail:The problem isn't the physical line itself. The problem is that they ( France telecom) do not route all the numbers out to the ISDN line they installed. The number ending with 1212 get routed to the ISDN NT and that number actually works. But the rest of the number series does not get terminated in that ISDN NT. Calling those other number result in an error message being read in French. That can only come from France Telecom.
3 e-mail:We cannot solve this problem because it is not the system which has an error. Carl has been in Bordeaux and has checked the ISND line at that is working, but the number series for Bordeaux is missing in the system from France Telecom, the only existing number is 1212. The rest of the numbers are missing for French Telecom and is therefore not working. Either we have been informed of a wrong number series +33 5 34 32 12 04 to 13 or France Telecom has not delivered what they should.
4 e-mail:I checked again with France Telecom and they confirmed that everything is delivered and ok from their side.
They gave us the number series +33 5 34 32 12 04 to 13 with main number (headnumber) is +33 5 34 32 12 12 (exactly as in Paris where we are n° series from +33 1 53 25 13 70 to +33 1 53 25 13 89 with the headnumber is +33 1 53 25 13 70).
That's the reason why you find only the +33 5 34 32 12 12 arriving into the IPBX, it's because you then have to program in our IPBX the other n° we want to use (+33 5 34 32 12 04/ 05/ 06/ 07/ â¦10/ 13/â¦) within the number series granted by France Telecom.
But this can be done only by us because we installed our own IPBX.
5 e-mail:Even though the other numbers aren't programmed into the IPBX, we should still get some sort of ISDN Layer 1 activity when calling one of the other numbers (fx. the 07number). That never happens, which means the numbers are somehow impeded from France Telecom.
When we call one of the number, we get an error message in French. If the traffic was hitting the IPBX, then that couldn't happen. That speak originates from France Telecom and we have never gotten any explanation as to why it's even there.
I will really apreciate your help. Where do you think the problem comes from? Is that really France Telecom whose empeded the series number(do not route the numbers)? What should I check/do, configure?
Thanks a lot for your help to all of you.
AitasellerAlready replied in "IP Telepho9ny".
Please do not open duplicate threads. -
Need your assistance in mapping Structure and Field in DME Tree
Hello Friends - I need your help in "Mapping from structure field" in DME.
In the existing format tree, It is mapped Structure as "FPAYP" and Field name "BNAME" to populate Company Code name in the Payment file.
Now I am asked to change this to populate value either from OX02 or OX15.
When Company Code name was maintained, It was maintained in short and in the address tab, Full name is maintained.
Please let me know which Structue and Field I should assign to pull the value either from OX02 or OX15.
Thanks for your help.Thanks a lot Henri/Lakshmi.
I have maintained mapping procedure Sturecture/field - FPAYHX/AUST1 to get the CoCd name in the file. In AUST1, Length of the CoCd is more than 18, and as per Bank format, It should be 18 characters in length.
User is not happy that complete CoCd name is not populated in the file. He has come up with an alternative and shortened the CoCd name that needs to be populated in the file and suggested us to get the value into the payment file. We should not replace CoCd name with the name he suggested in OX02/OX15,FBZP.
My doubt is that if there is any filed I can use to maintain the name he suggested and assign it in mapping procedure.
Thanks -
I need your error {com.apple.appleaccount error 403}
I need your help please as i has the below error {com.apple.appleaccount error 403} so how i can solve it to work in i cloud please i need a reply
Error: com.apple.appleaccount error 403
Recreate Error: On a Iphone/Ipad device that has "already" created the maximum of 3 per device Apple limit of ICloud account creation attempt to create or login to ICloud service tab in Settings. You will be presented with "com.apple.appleaccount error 403" which does not tell the laymen anything useful.
Cause: IOS 7 reports a "best guess" error instead of detailed error explanation.
How To Resolve Error: Find a device that has not been used to create an ICloud account the maximum 3 times and use it to create the ICloud account by logging into the Settings/ICloud tab with the Apple ID you want a ICloud account created for.
Keep in mind this will use up one of the three lifetime allowed ICloud account creations allowed by Apple on that device.
Also per support: If an existing account is logged into the ICloud service. A. Backup phone using iTunes on a mac/pc. B. At bottome of Settings/ICloud Delete the account "AND" all the user date from the phone. It will offer the Delete all data option. The reason for Deletion(and is why we backed up on a pc vs. the cloud) is when you create the new ICloud account it will backup all of the Device owners information to the wrong persons account.
Once you have created the new ICloud account log into that account on device that was presenting error: "com.apple.appleaccount error 403" it should allow the ICloud login.
Once you have verified the "device with error" is ICloud functional delete the ICloud account from the device used to seed the ICloud account and delete again all user data from cloud. Restore the recently created mac/pc Itunes locally created backup to the phone and then go to Settings/ICloud and login with the device owners Apple ID and password and verify your backup to the ICloud settings and Eureka! your done.
It took less time to do that for me to type this lol.
NOTE: Original posted under poet68 id, that was me logged in as my customer. This was me "danowolf" discovery and solution developed with Apple support on the phone 9/26/2013
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