Does Java have a control like CListCtrl in VC++

I have seen an application developed in VC++ with items displayed in heirarchial manner or listed like tree in a CListCtrl control.
Can a similar customization be done in Java.
Regards,
Arun
[email protected]

In Microsoft visual Studio, VC++ applications they
have a user control
List Ctrl.CListCtrl is a class specific to MFC not Visual Studio or VC++.
Is there any simiilar controls in Java.JList.

Similar Messages

Why does Java have such a large footprint?

I've been curious about this topic for a while, but I haven't ever looked into this to any depth. I also posted this to stackoverflow but haven't gotten any solid responses so far:
http://stackoverflow.com/questions/1107991/why-does-java-have-such-a-large-footprint
Java - or at least Sun's Hotspot JVM - has long had a reputation for having a very large memory footprint. What exactly is it about the JVM that gives it this reputation? I'd be interested in a detailed breakdown: how much memory goes to the runtime? (The JIT? The GC/memory management? The classloader?) Anything related to "auxiliary" APIs like JNI/JVMTI? The standard libraries? (Which parts get how much?) Any other major components?
I realize that this may not be straightforward to answer without a concrete application plus VM configuration, so just to narrow things down at least somewhat: I'm primarily interested in default/typical VM configurations, and in a baseline console "Hello world" app as well as any real-world desktop or server app. (I'm suspecting that a substantial part of the JVM's footprint is largely independent of the app itself, and it is in this part that I'd like to zoom in, ideally.)
I have a couple of other closely related questions:
Other similar technology, such as .NET/mono, don't exhibit nearly the same footprint. Why is this the case?
I've read somewhere on the intarwebs that a large portion of the footprint is due simply to the size of the standard libraries. If this is the case, then why is so much of the standard libraries being loaded up front?
Are there any efforts (JSRs, whatever) to tame the memory footprint? The closest thing I've come across is a project to reduce the on-disk footprint of the JVM [1] and to modularize the standard library [2].
I'm sure that the footprint has varied over the past decade or so with every new version of Java. Are there any specific numbers/charts chronicling precisely how the JVM's footprint has changed?
[1] http://blogs.sun.com/jtc/entry/reduced_footprint_java_se_bringing
[2] http://blogs.sun.com/theplanetarium/entry/project_jigsaw_modularizing_jdk_7

yangzhang wrote:
I've been curious about this topic for a while, but I haven't ever looked into this to any depth. I also posted this to stackoverflow but haven't gotten any solid responses so far:
http://stackoverflow.com/questions/1107991/why-does-java-have-such-a-large-footprint
Java - or at least Sun's Hotspot JVM - has long had a reputation for having a very large memory footprint. What exactly is it about the JVM that gives it this reputation? I'd be interested in a detailed breakdown: how much memory goes to the runtime? (The JIT? The GC/memory management? The classloader?) Anything related to "auxiliary" APIs like JNI/JVMTI? The standard libraries? (Which parts get how much?) Any other major components?
Presumably versus some other VM. I would suppose the fact that much of the VM is written in java has something to do with it.
I realize that this may not be straightforward to answer without a concrete application plus VM configuration, so just to narrow things down at least somewhat: I'm primarily interested in default/typical VM configurations, and in a baseline console "Hello world" app as well as any real-world desktop or server app. (I'm suspecting that a substantial part of the JVM's footprint is largely independent of the app itself, and it is in this part that I'd like to zoom in, ideally.)
I have a couple of other closely related questions:
Other similar technology, such as .NET/mono, don't exhibit nearly the same footprint. Why is this the case?
Not sure I agree with that. What size do you see with a .Net app that uses 3.0/3.5?
I've read somewhere on the intarwebs that a large portion of the footprint is due simply to the size of the standard libraries. If this is the case, then why is so much of the standard libraries being loaded up front?
Good question. There is a feature that allows multiple VMs to use the same memory footprint version of the loaded libraries. That is a new feature and it isn't clear to me if it covers the entire API. I do not know if that is dynamically built.

Does java have picture box?

I am newbie in building gui with java. just migrate from using vsstudio.
I see people use matisee to dragndrop things
but what i want to know now. is
does java have picturebox? and can i set location of each component like
x.setLocatioN(x,y) on form?
ummm, .. is it good to use matisee?
thks

Hi. What do your initials stand for, Tom Hanks Kevin Susan?
You can use a JLabel to show a graphic in Java. Use its setIcon method.
You can use setBounds to position components, but you must set the layout of the parent component to null using setLayout. However, it is recommended not to do this, as it isn't very flexible. Instead, learn about and use [url java.sun.com/docs/books/tutorial/uiswing/layout/using.html]layout managers.
I've never used Matisse.

Does Java have APIs for statistical analysis?

Hi Java Experts
I want to develop a Java program which can help users to analyse their stock investment. Here I have two questions
1) How can I wrap my finished Java program as a XXX.exe? So users can install my program by executing it
2) Does Java have any APIs for statistical analysis?
Thank you very much for your help!
ViolaIT

1) How can I wrap my finished Java program as a
XXX.exe? So users can install my program by
executing ithttp://onesearch.sun.com/search/onesearch/index.jsp?qt=java+exe&qp_name=null&subCat=siteforumid%3Ajava54&site=dev&dftab=siteforumid%3Ajava54&chooseCat=javaall&col=developer-forums

Does java have strong names?

Hi,
I am a .net developer also interested in Java. I would like to know if Java provides something similar to Strong names in .net.
Thank you.

I have another question, pls guys dont mind about posting it in the same thread. I did not want to clutter the forum.
If I have two interfaces like this:
Interface A{
void getMethod();
Interface B{
void getMethod();
If I have a class implementing these two interfaces:
Class C implements A,B{
//I will not be able to give implementation for both the methods in java here
But I can do it in .net. I do not understand why java does not provide this or what is the advantage of having it in .net?
I can do it in .net like this:
the two interfaces would be like this:
Public Interface a
Sub getMethod()
End Interface
Public Interface b
Sub getMethod()
End Interface
the class can implements bot these interfaces with the same method signature:
Public Class c
Implements a, b
Public Sub agetMethod() Implements a.getMethod
End Sub
Public Sub bgetMethod() Implements b.getMethod
End Sub
End Class
I can write a class which can invoke the specific methods without ambiguity:
Public Class k
Public Sub New()
Dim atmp As a = New c()
Dim btmp As b = New c()
atmp.getMethod()
btmp.getMethod()
End Sub
End Class
If I want to do it in java, how do I do it? please educate me on this.
Thank you.

Does oracle have similar functionality like MsSql "for xml path('')"

Does oracle have similar build in functionality like MsSql “for xml path(‘’)” , or in another word, it can enforce the result set(multiple rows) into ONE line such kind of presentation way.
Thanks in advance. Any help would be greatly appreciated.

Here I would like specify my question mnore clearly,
CREATE TABLE t(
line NUMBER(3),
site VARCHAR2(4),
phase VARCHAR2(5),
test VARCHAR2(25));
INSERT INTO t VALUES (1, '0100', '*','1111111111111111111111111' );
INSERT INTO t VALUES (2, '0100', '=','2222222222222222222222222' );
INSERT INTO t VALUES (3, '0100', '=','3333333333333333333333333' );
INSERT INTO t VALUES (4, '0100', '*','4444444444444444444444444' );
INSERT INTO t VALUES (5, '0100', '=','5555555555555555555555555' );
INSERT INTO t VALUES (6, '0200', '*','6666666666666666666666666' );
Here I want to retrieve the 'line' column information in ONE line way
select line from t I want the result is like '1,2,3,4,5,6'
Any generous help would be greatly appreciated!!!

Does java have any class that wrap byte[]

my program would send byte[] to remote host;I know byte cant be serializabled;
so I would a class wrap byte[],I cant write new class,because remote host maybe havent this class,
I want to kown if java have a class that wrap byte[];

The iPlanet Application Server 6.5 has a very nasty bug when you're using RMI/IIOP: if you want to reference an EJB in a stand-alone application. you can't use reliably methods that take parameters whose type is an array of primitives (like byte[]). The EJB can be called correctly in a Web application or by another EJB, but you can't use them in stand-alone apps.
It is a product that is simultaneously a C++ application server and a Java application server, and has lots and lots of native code. It uses a specially modified JRE 1.3 for its own use.
Sun dumped it (too buggy, too complex, too slow and very oddball) and used the J2EE SDK RI code instead to write the new versions of Sun ONE Application Server and Sun Java System Application Server.

[Solved] ALSA "This sound device does not have any controls" XDJ-R1

Hey guys,
I have a XDJ-R1 which includes a 24bit 44.1khz USB soundcard that can be used to record audio from the mixer.
When I plug it in it's detected fine. However using alsamixer (or amixer) I don't see any audio controls for volume.
If I start pulseaudio it will detect the device just fine. However, at 100% volume the audio seems rather low. I'm seeing about -24db while my mixer shows the output at around +2db. I suspect the ALSA volume is rather low. But have no way of changing it as I can't seem to see any controls!
Here are some command outputs:
alpaly -l
**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: ALC269 Analog [ALC269 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: XDJR1 [PIONEER XDJ-R1], device 0: USB Audio [USB Audio]
Subdevices: 1/1
Subdevice #0: subdevice #0
aplay -L
null
Discard all samples (playback) or generate zero samples (capture)
default:CARD=Intel
HDA Intel, ALC269 Analog
Default Audio Device
sysdefault:CARD=Intel
HDA Intel, ALC269 Analog
Default Audio Device
front:CARD=Intel,DEV=0
HDA Intel, ALC269 Analog
Front speakers
surround40:CARD=Intel,DEV=0
HDA Intel, ALC269 Analog
4.0 Surround output to Front and Rear speakers
surround41:CARD=Intel,DEV=0
HDA Intel, ALC269 Analog
4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=Intel,DEV=0
HDA Intel, ALC269 Analog
5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=Intel,DEV=0
HDA Intel, ALC269 Analog
5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=Intel,DEV=0
HDA Intel, ALC269 Analog
7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
default:CARD=XDJR1
PIONEER XDJ-R1, USB Audio
Default Audio Device
sysdefault:CARD=XDJR1
PIONEER XDJ-R1, USB Audio
Default Audio Device
front:CARD=XDJR1,DEV=0
PIONEER XDJ-R1, USB Audio
Front speakers
surround40:CARD=XDJR1,DEV=0
PIONEER XDJ-R1, USB Audio
4.0 Surround output to Front and Rear speakers
surround41:CARD=XDJR1,DEV=0
PIONEER XDJ-R1, USB Audio
4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=XDJR1,DEV=0
PIONEER XDJ-R1, USB Audio
5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=XDJR1,DEV=0
PIONEER XDJ-R1, USB Audio
5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=XDJR1,DEV=0
PIONEER XDJ-R1, USB Audio
7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
iec958:CARD=XDJR1,DEV=0
PIONEER XDJ-R1, USB Audio
IEC958 (S/PDIF) Digital Audio Output
amixer -c 1
(output is empty)
cat /proc/asound/devices
2: [ 0- 0]: digital audio playback
3: [ 0- 0]: digital audio capture
4: [ 0- 0]: hardware dependent
5: [ 0] : control
6: [ 1- 0]: raw midi
7: [ 1- 0]: digital audio playback
8: [ 1- 0]: digital audio capture
9: [ 1] : control
33: : timer
(with pulseaudio on) pacmd list-sources
3 source(s) available.
index: 2
name: <alsa_input.usb-Pioneer_PIONEER_XDJ-R1_PIONEER_XDJ-R1-00-XDJR1.analog-stereo>
driver: <module-alsa-card.c>
flags: HARDWARE DECIBEL_VOLUME LATENCY
state: SUSPENDED
suspend cause: IDLE
priority: 9049
volume: front-left: 65536 / 100% / 0.00 dB, front-right: 65536 / 100% / 0.00 dB
balance 0.00
base volume: 65536 / 100% / 0.00 dB
volume steps: 65537
muted: no
current latency: 0.00 ms
max rewind: 0 KiB
sample spec: s24le 2ch 44100Hz
channel map: front-left,front-right
Stereo
used by: 0
linked by: 1
fixed latency: 99.95 ms
card: 1 <alsa_card.usb-Pioneer_PIONEER_XDJ-R1_PIONEER_XDJ-R1-00-XDJR1>
module: 5
properties:
alsa.resolution_bits = "24"
device.api = "alsa"
device.class = "sound"
alsa.class = "generic"
alsa.subclass = "generic-mix"
alsa.name = "USB Audio"
alsa.id = "USB Audio"
alsa.subdevice = "0"
alsa.subdevice_name = "subdevice #0"
alsa.device = "0"
alsa.card = "1"
alsa.card_name = "PIONEER XDJ-R1"
alsa.long_card_name = "Pioneer PIONEER XDJ-R1 at usb-0000:00:1d.1-2, full speed"
alsa.driver_name = "snd_usb_audio"
device.bus_path = "pci-0000:00:1d.1-usb-0:2:1.0"
sysfs.path = "/devices/pci0000:00/0000:00:1d.1/usb2/2-2/2-2:1.0/sound/card1"
udev.id = "usb-Pioneer_PIONEER_XDJ-R1_PIONEER_XDJ-R1-00-XDJR1"
device.bus = "usb"
device.vendor.id = "08e4"
device.vendor.name = "Pioneer Corp."
device.product.id = "0170"
device.product.name = "PIONEER XDJ-R1"
device.serial = "Pioneer_PIONEER_XDJ-R1_PIONEER_XDJ-R1"
device.string = "front:1"
device.buffering.buffer_size = "26448"
device.buffering.fragment_size = "6612"
device.access_mode = "mmap"
device.profile.name = "analog-stereo"
device.profile.description = "Analog Stereo"
device.description = "PIONEER XDJ-R1 Analog Stereo"
alsa.mixer_name = "USB Mixer"
alsa.components = "USB08e4:0170"
module-udev-detect.discovered = "1"
device.icon_name = "audio-card-usb"
ports:
analog-input: Analog Input (priority 10000, latency offset 0 usec, available: unknown)
properties:
active port: <analog-input>
What might I be missing? Why can PA figure the device out but ALSA can't?
Last edited by EvanPurkhiser (2014-04-16 09:27:13)

I'm interested in recording from the mixer over USB.
The device also supports playback into the mixer, but I assume this is designed for use in conjunction with using the device as a MIDI-Controller, which I don't have any intentions of doing.
What I've been doing to check the levels of the device is to play a track through the device (making sure that the VU meter for the channel is peaking at around 0db), record using `ffmpeg -f pulse -i 1 recording.wav` and then running `ffmpeg -i recording.wav -af "volumedetect" -f null /dev/null`
Which looks something like this:
[Parsed_volumedetect_0 @ 0x1f0eb80] n_samples: 10265206
[Parsed_volumedetect_0 @ 0x1f0eb80] mean_volume: -26.1 dB
[Parsed_volumedetect_0 @ 0x1f0eb80] max_volume: -12.0 dB
[Parsed_volumedetect_0 @ 0x1f0eb80] histogram_12db: 21
[Parsed_volumedetect_0 @ 0x1f0eb80] histogram_13db: 238
[Parsed_volumedetect_0 @ 0x1f0eb80] histogram_14db: 1619
[Parsed_volumedetect_0 @ 0x1f0eb80] histogram_15db: 7703
[Parsed_volumedetect_0 @ 0x1f0eb80] histogram_16db: 29370
I actually _can_ record directly from alsa, but I have to tell it the format, rate, and channels of the device.
[netbook/scratch/]> arecord -D hw:1 test.wav
Recording WAVE 'test.wav' : Unsigned 8 bit, Rate 8000 Hz, Mono
arecord: set_params:1233: Sample format non available
Available formats:
- S24_3LE
[netbook/scratch/]> arecord -D hw:1 -f S24_3LE test.wav
Recording WAVE 'test.wav' : Signed 24 bit Little Endian in 3bytes, Rate 8000 Hz, Mono
arecord: set_params:1239: Channels count non available
[netbook/scratch/]> arecord -D hw:1 -f S24_3LE -c 2 test.wav
Recording WAVE 'test.wav' : Signed 24 bit Little Endian in 3bytes, Rate 8000 Hz, Stereo
Warning: rate is not accurate (requested = 8000Hz, got = 44100Hz)
please, try the plug plugin
[netbook/scratch/]> arecord -D hw:1 -f S24_3LE -c 2 -r 44100 test.wav
Recording WAVE 'test.wav' : Signed 24 bit Little Endian in 3bytes, Rate 44100 Hz, Stereo
The volume is still just as low as recording with PA though

Why does Java have so much trouble with deleting files

So, I've been doing alot more code on the file-level and have been noticing that Java is really terrible at deleting files. This should be rather straightforward, but the delete method can fail in so many ways, it's unbelievable. Even with taking special care to close all streams, it will sometimes just not do it, or even return a "Yes I've deleted it" result and the file is still there! (deleteOnExit() suffers the same affliction)
This problem is even scuttling the otherwise trusty Ant, which is really annoying. Ever seen this? "BUILD FAILED: Could not delete 'myproject.jar'" So any Ant-driven automated build-and-test process can fail because of this super-avoidable error. (We have to code a pre-build-jar-deletion shell script, which is annoying when jars are added/deleted/renamed for whatever reason.)
Does anyone know the reason for this? I'm really curious.
Maybe, in 1.5, they will come out with "File.crushAndDestroyWithMercilessPrejudice()". I'd use it all of the time! :)

I had the same problem when I was working with JAI. I had about a half million images that I made a viewer for, which would allow our users to do away with microfiche. Project worked great, but the files wouldn't delete off the user box (Win2K). I checked everything and they just would not delete--windows would not acknowlege the resources had been released by Java.
I finally took a lesson from MS developers and said: "It's not a bug, it's a feature!" I wrote it into the manual that it was a cache feature and would speed-up access to the images, yet delete the old ones (which it did, any images that were not accessed during the session would delete just fine, while any that were accessed would still be there next time for local access rather than hitting the network for them. The cache turned out to be one of the great features of the application.
On the other hand, I've not had any problems deleting files from Linux.

Does Firefox have a feature like the software named Robo-form, where like if you wanted to go to your gmail, you could click on one thing, and not have to inter user name and password every single time?

Some times in Firefox I see pop ups where Firefox is allowing you to make Firefox remember a password or some such thing like that.
I want to go to an account or web site where I have already registered, type in my user name and password and then before I log in, have Firefox remember my log in information, so that in the future I could go to a folder let's say, that has a list, and just click on the one item, spending less time logging in at places.
Is this something Firefox does, or do I have to say, use a software like Robo-form?

https://support.mozilla.com/en-US/kb/Remembering+passwords

Does InDesign have Shared Content Like Quark?

We soon will be working on our new catalog that was originally done in Quark. When I and the other designer did this catalog we used Content Sharing in Quark to do the catalog. We had the catalog stored on a server drive that we both could access. This eliminated much of the catalog being tossed back and forth between us to do work on and kept the document clean and up-to-date.
We are now going to switch it over to InDesign. We both use CS3 on a Mac (I also use a PC) and want to use this same type of document sharing in InDesign. Is InCopy the way to go? Is this the same as Content Sharing in Quark? We also did the product graphs using Content Sharing which worked out great. Is this possible in InDesign?
I will be using Q2ID Quark to Adobe plug-in to convert the Quark document ti InDesign. I have used this plug-in for one or two page flyers, but not for a large document like our 128-page catalog. Is there anything I need to know when converting the catalog over? Our catalog consists of images, product graphs (done as text not tables) and style sheets.
Thanks everyone for your answers.

Not really sure what content sharing is in Quark, but yes, it sounds like InCopy would be a good solution for you.
Q2ID is an excellent product and does a great job of converting ID files, but as the old saying goes, GIGO.
Bob

What Net Capabilities Does Java Have?

I have learned two other programming languages before learning Java and now I have learned a lot of the syntax of Java. I need to know if this is possible:
Is there a way for me to get an HTML document from the internet from a specified URL on an HTTP server? If this is possible, can I search through it, possibly with FileReader? If Java does have a function that I could use to do this could someone please tell me what it is and what class it's from?
thanks,
lateralus

The URL class will be helpful. It is described here:
http://java.sun.com/javase/6/docs/api/java/net/URL.html
URL's openStream() method might be a good place to start. There is an example of
its use at "The Java Developers Almanac 1.4" here:
http://www.exampledepot.com/egs/java.net/ReadFromURL.html?l=rel
And there is lots on Networking in Sun's Tutorial:
http://java.sun.com/docs/books/tutorial/networking/index.html
These three locations could well serve as your first port of call with many "Is there a
way..." type questions.

Does Java have a built in XML parser?

Hi, does the JDK come with a built in XML parser? If so, from what version onwards is this available?
I'm looking at this article here:
http://www.devx.com/xml/Article/16921/0/page/3
So, I presume the answer is yes, Java comes with JAXP. I'm using JDK 1.6, does that come packaged with JAXP?
Thanks.
Rupert

rupertlssmith wrote:
Hi, does the JDK come with a built in XML parser? If so, from what version onwards is this available?
I'm looking at this article here:
http://www.devx.com/xml/Article/16921/0/page/3
You need to add three jar files--jaxp.jar, crimson.jar, and xalan.jar--to your CLASSPATH.xalan and jaxp have been in the Sun Java SDK since at least 1.4.
crimson existed in the Sun Java 1.4 SDK apparently replaced by xerces from Sun Java 1.5 SDK.

Imbedded SWF does not have Player Controls?

Hello,
I am using Go Live CS2 and have a Flash video to put on a page.
I have Flash CS4 so I made an SWF and put on the Go Live page.
When I preview in a browser, the video plays but the player controls are not there.
When I preview in Flash (html preview) the controls are there.
Also, the video is auto-playing even after I unchecked auto play in Go Live.
Do I need to install some sort of Flash player code for Go Live?
Thanks for your help!

Hello,
I am using Go Live CS2 and have a Flash video to put on a page.
I have Flash CS4 so I made an SWF and put on the Go Live page.
When I preview in a browser, the video plays but the player controls are not there.
When I preview in Flash (html preview) the controls are there.
Also, the video is auto-playing even after I unchecked auto play in Go Live.
Do I need to install some sort of Flash player code for Go Live?
Thanks for your help!

Does aperature have action buttons like PS?

Hello All,
I'm new to Aperature and the Mac world. Fairly familar with photoshop. Are there a means to create in Aperature the equivalent of actions/commands in photoshop? Thank you in advance for anyone who helps out on this one.
Mark

Mark10ri wrote:
Can I then save those things I lifted somewhere?
kinda, it's a little different in Aperture, as u edit you can invoke the last "Lift" by selecting o (Stamp) and the option key
Or do I manually have to edit a photo each time before I begin stamping other photo's?
you can lift and stamp during a session in Aperture but if you find you're using the same settings (adjustments) frequently then save them as a preset (not really a action, more like an adjustment layer that is stored and reused). for example, if your camera has certain characteristics save those adjustments with an appropriate name or what I do when I shoot at certain locations in Hollywood, California, I save the setting for each location, ViperRoom has it's settings, Frank Lloyd Wright theater has it's own, the beach...so these are just low light, tungsten light, bright day light settings that I've perfected and stored as presets

Does Java have a control like CListCtrl in VC++

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