| Open Source quality better then closed? |
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Index ‹ java-programmer
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- 1
- free E-book linksdear friends,
this link will help full see more number of E-books use this
http://www.apsira.com/etc/usefulllinks.php?keyid=5.1
- 7
- Midlet TextBox-------------------
TextBox tb = new TextBox("title", null, 5, TextField.DECIMAL);
tb.addCommand(new Command("Ok", Command.BACK, 0));
tb.setCommandListener(this);
Display dis = Display.getDisplay(this);
dis.setCurrent(tb);
-------------------
The code above shows (in my mobile Sony Ericsson K300i) a TextBox with 2
Commands "Ok" and "Ok".
If TextBox is empty of chars, first "Ok" is grayed but second not.
I suspect that the first Command "Ok" is part of TextBox (Screen) and
when I press it, it does nothing and commandAction method does not run.
Only when I press the second Command "Ok" commandAction method runs.
So, first "Ok" is "feature" of my mobile or it is in MIDP Specification?
If the second, how can I get access to this Command?
- 8
- AccessControlException
The following is a snippet from a method in an applet RSSTree:
private Document getOPMLFile(String OPMLFileName) {
Document OPMLFile = null;
try {
URL u = new URL(getCodeBase(), OPMLFileName);
try {
BufferedReader br = new BufferedReader(new
InputStreamReader(u.openStream()));
if (br != null) {
try {
Builder parser = new Builder();
OPMLFile = parser.build(br);
}
.
.
.
This method is called out of RSSTree.start(). Document & Builder are
classes in the open source XML processor com.nu.xom. I get the following
error when parser.build(br) is executed:
java.lang.ExceptionInInitializerError
at RSSTree.getOPMLFile(RSSTree.java:63)
at RSSTree.start(RSSTree.java:31)
at sun.applet.AppletPanel.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: java.security.AccessControlException: access denied
(java.util.PropertyPermission
org.apache.xerces.xni.parser.XMLParserConfiguration write)
at java.security.AccessControlContext.checkPermission(Unknown Source)
at java.security.AccessController.checkPermission(Unknown Source)
at java.lang.SecurityManager.checkPermission(Unknown Source)
at java.lang.System.setProperty(Unknown Source)
at nu.xom.Builder.<clinit>(Unknown Source)
If I replace the bad line with a loop to read the the stream myself and
write out the lines, I get the XML I expect.
Without seeing the source for XOM can someone give me an idea as to why I
have an access problem when going through XOM but don't when the applet
reads directly?
Thanks.
Ken
- 8
- How to speed up the Portal development in eclipseHi all,
I am new in portal development. I am used to Eclipse to write Java
standalone application, but no server contained application such as
servlet.
Is there any way to setup a integrated development environment with
JetSpeed in Eclipse to do portal environment?
Please enlighten me.
Thanks in advance for your inputs and ideas.
Eclifeww
- 8
- Applet file readinghello every one;
i m making an applicaion by using java Applet, on which i wish to open
a file from users system, but i dont know how to do this;
is any one have any idea about reading files on users system by using
Applet.
- 8
- Get installed appHi,
I want to write an app but I'm not sure if I should use Java.
The app is a crossed platform.
My questions:
1.Can Java return me the name/position of install app on the OS it
supports?
2. Does Java supports the following OS:
Unix/GTK+ , Unix/Motif and X11 , Mac OS , MGL and OS/2 ?
TIA.
Eran
- 8
- java/121420: Java applet fails to find class
>Number: 121420
>Category: java
>Synopsis: Java applet fails to find class
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: freebsd-java
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Thu Mar 06 08:10:01 UTC 2008
>Closed-Date:
>Last-Modified:
>Originator: Andrew Reilly
>Release: FreeBSD 7.0-STABLE amd64
>Organization:
>Environment:
System: FreeBSD duncan.reilly.home 7.0-STABLE FreeBSD 7.0-STABLE #3: Sat Mar 1 17:44:29 EST 2008 root@duncan:/usr/obj/usr/src/sys/DUNCAN amd64
A 3G Athlon64-X2.
>Description:
An attempt to use a java client from within firefox,
while connecting to a Juniper ssl VPN service fails with
this message in the java log. (The same service works OK
with firefox on a MacOS-X laptop.):
Java Plug-in 1.6.0_03-p4
Using JRE version 1.6.0_03-p4 Java HotSpot(TM) 64-Bit Server VM
User home directory = /usr/home/andrew
----------------------------------------------------
c: clear console window
f: finalize objects on finalization queue
g: garbage collect
h: display this help message
l: dump classloader list
m: print memory usage
o: trigger logging
p: reload proxy configuration
q: hide console
r: reload policy configuration
s: dump system and deployment properties
t: dump thread list
v: dump thread stack
x: clear classloader cache
0-5: set trace level to <n>
----------------------------------------------------
load: class de.mud.jta.Applet not found.
java.lang.ClassNotFoundException: de.mud.jta.Applet
at sun.applet.AppletClassLoader.findClass(AppletClassLoader.java:183)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.applet.AppletClassLoader.loadClass(AppletClassLoader.java:127)
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
at sun.applet.AppletClassLoader.loadCode(AppletClassLoader.java:626)
at sun.applet.AppletPanel.createApplet(AppletPanel.java:780)
at sun.plugin.AppletViewer.createApplet(AppletViewer.java:2074)
at sun.applet.AppletPanel.runLoader(AppletPanel.java:709)
at sun.applet.AppletPanel.run(AppletPanel.java:363)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.net.ConnectException: Invalid argument
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)
at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)
at java.net.Socket.connect(Socket.java:519)
at sun.net.NetworkClient.doConnect(NetworkClient.java:155)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:394)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:529)
at sun.net.www.protocol.https.HttpsClient.<init>(HttpsClient.java:271)
at sun.net.www.protocol.https.HttpsClient.New(HttpsClient.java:328)
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient(AbstractDelegateHttpsURLConnection.java:172)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:729)
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:158)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:977)
at java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:373)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(HttpsURLConnectionImpl.java:318)
at sun.applet.AppletClassLoader.getBytes(AppletClassLoader.java:284)
at sun.applet.AppletClassLoader.access$100(AppletClassLoader.java:44)
at sun.applet.AppletClassLoader$1.run(AppletClassLoader.java:173)
at java.security.AccessController.doPrivileged(Native Method)
at sun.applet.AppletClassLoader.findClass(AppletClassLoader.java:170)
... 9 more
>How-To-Repeat:
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
- 9
- Why does this query take forever?For some reason, I have a rather large (to me) query, with numerous inner
joins, accessing a remote server, and it is taking about twenty times longer
than most queries to the same database.
The query itself is built programmatically within my application, and
example of which is below. I am hoping someone in the group may have some
insight into why this query is so slow, suggesting perhaps a better
structure for it, such that I can go back in and rewrite my code that
creates such queries.
Thanks in advance, Ike
"SELECT DISTINCT
chronology.id,status_id.status,chronology.completed,chronology.completeddate
,chronology.completedtime,activities_id.activity,chronology.activities_activ
ity,chronology.activities_attachment,chronology.activities_available_to_all,
chronology.upcards_firstnamelastname,upcard_id.id,chronology.feedbackrequire
d,chronology.landondate,chronology.hasspecifictime,chronology.datetoperform,
chronology.timetoperform,chronology.duration,chronology.weekends,chronology.
prefix,statusactivitieisid.id,associateresponsible.username,activities_usern
ameid.username,chronology.editFlag FROM
chronology,status,activities,upcards,statusactivities,associates
INNER JOIN status status_id on chronology.status_id=status_id.id
INNER JOIN activities activities_id on
chronology.activities_id=activities_id.id
INNER JOIN upcards upcard_id on chronology.upcard_id=upcard_id.id
INNER JOIN statusactivities statusactivitieisid on
chronology.statusactivitieisid=statusactivitieisid.id
INNER JOIN associates associateresponsible on
chronology.associateresponsible=associateresponsible.id
INNER JOIN associates activities_usernameid on
chronology.activities_usernameid=activities_usernameid.id
WHERE chronology.upcard_id = 18"
- 9
- JSP questionshave some questions about JavaServer Pages to ask
1. I made several input fields for user to input the height, width and
other stuff to create a table. how can I make the font in color red in
first row and first column automaticly and font in other rows and
columns remain the same color?
2. I want to add a title inside the table that need to colspan the
rest of the table. Becasue I don't know what # the user will input for
columns, so I can't set it before user input. so plz help me on this.
3. Randomly place an input field in one of the cells ?a different
cell on each refresh. If the user enters the correct product there and
changes the focus (by clicking outside the field), a Javascript
provided by the jsp page checks the answer and makes appropriate alert
My jsp file looks like this:
<HTML>
<head></head>
<BODY>
<%
String s2 = request.getParameter("Bsize") ;
s2 = s2.trim();
out.print("<table bgcolor=silver border= ");
out.print(s2);
out.print(" ");
String s3 = request.getParameter("Bcolor") ;
s3 = s3.trim();
out.print("bordercolor= ");
out.print(s3);
out.print(">");
String m1 = request.getParameter("mName") ;
m1 = m1.trim();
int M = Integer.parseInt(m1);
String n1 = request.getParameter("nName") ;
n1 = n1.trim();
int N = Integer.parseInt(n1);
String s = request.getParameter("FullName") ;
s = s.trim();
out.println("<font color=red size=6>");
out.println(s);
out.println("'s table is: </font>");
out.println("<tr colspan= ");
out.print(m1);
out.println(">");
out.print("<th> Numbers </th> </tr>");
for (int i =1; i<= M; i++ )
{
out.println("<tr width= 10 >");
for (int j =1; j<= N; j++ )
{
out.println("<th >");
out.println(j * i);
out.println("</th>");
}
out.println("</tr>");
}
%>
</table>
- 10
- <defunct> processesI've got a problem with <defunct> (zombie) processes on Linux...
I'm running child processes using Runtime.exec() and it usually goes well.
But just sometimes (undefined sometimes), process finishes as defunct. Is
there anything I can do about it? I suck out both inputStream and
errorStream, check Process.exitValue(), but it stucks on Process.waitFor().
I even try to suck these streams in separate threads, but it doesn't help.
I had the idea to detect if the process has stucked, and then try from
another thread to Process.destroy(), but it didn't help! Destroy does
nothing, process is still defunct, and waitFor() blocks it again... There
are no more methods in class Process to try, and I've already tried all the
combinations of existing ones...
Newsgroups and web are full of similar questions, but no answer. They all
say that a process is zombie if it is finished, but parent process hasn't
yet read the exit code. But I do read exitValue, and I also do
Process.waitFor(). Can I consider this a bug in Java VM?
Where could find the solution? Which direction should I go? I've been trying
for months, but no results...
Now, this is the latest version of code, as seen on java.sun.com...
{
...
Process process = Runtime.getRuntime().exec(commandLine);
inputVacuum = new TextVacuum(process.getInputStream());
errorVacuum = new TextVacuum(process.getErrorStream());
process.waitFor();
int exitValue = process.exitValue();
...
}
public class TextVacuum extends Thread {
private BufferedReader reader;
private StringBuffer buffer = new StringBuffer();
...
public TextVacuum(InputStream inStream) {
reader = new BufferedReader(new InputStreamReader(inStream));
start();
}
public void run() {
try {
char[] cbuf = new char[4096];
int numRead = reader.read(cbuf);
while (numRead != -1) {
buffer.append(new String(cbuf, 0, numRead));
numRead = reader.read(cbuf);
}
}
catch (IOException e) { }
finally {
try { reader.close(); }
catch (IOException e) { }
reader = null;
}
}
...
}
Thanks!
- 11
- Learning Apache Ant, problems with Swing(?)I'm attempting to learn Apache Ant (apache-ant-1.6.1); OS Linux Fedora
Core 2; j2sdk1.4.2_04. I appear to have problems with Ant + Swing, but
each work separately.
The following is my first build file (copied from the web).
<?xml version="1.0"?>
<!-- build file for lesson 1 -->
<project name="tutorial" default="build" basedir=".">
<target name="build">
<javac srcdir="." />
</target>
</project>
Works fine on a simple Java program, e.g.
import java.io.*;
public class Hello {
public static void main(String args[]) {
System.out.println("Hello");
}
}
However, when I progress to anything involving Java Swing, I get
compilation errors like:
[javac] /home/jc/java/classes/anttest/GuiScreens.java: In method
`GuiScreens.main(java.lang.String[])':
[javac] /home/jc/java/classes/anttest/GuiScreens.java:24: error:
Can't find constructor
`javax.swing.JFrame(Ljava/lang/String;Ljava/awt/GraphicsConfiguration;)'
in type `javax.swing.JFrame'.
[javac] frame[j][i] = new JFrame("Config: " + i,
gc[i]);
/This program compiles okay using javac./
(BTW jc@localhost~/java/classes/anttest>$ echo $ANT_HOME
/usr/apache-ant-1.6.1
jc@localhost~/java/classes/anttest>$ echo $JAVA_HOME
/usr/java/j2sdk1.4.2_04)
Any ideas?
TIA,
Jon C.
- 11
- optimizing java compilerHi!
As the -O option of javac does nothing and Sun obviously think it can affort
not to do so, which compiler is known to optimize bytecode well? Jikes?
eclipse? What about AspectJ?
Regards
Timo
- 11
- Sunspot: Java Virtual Machine Implementation Vulnerability``SUN Java Virtual Machine Implementation Vulnerability
We have found a security vulnerability in the SUN's implementation of
the Java Virtual Machine, which affects the following SDK and JRE
releases:
- SDK and JRE 1.4.1_03 and earlier
- SDK and JRE 1.3.1_08 and earlier
- SDK and JRE 1.2.2_015 and earlier.
SUN was informed about this issue on June the 2nd 2003 and has already
addressed it in their latest SDK/JRE versions. Please, see Sun Alert
Notification numbered 57221 for more information about the patched
SDK/JRE releases. [...]
The described vulnerability allows for the creation of a malicious
applet that could *completely* bypass applet sandbox restrictions. We
developed proof of convept code which successfully exploited this
vulnerability in Netscape 6 and 7 as well as Mozilla web browsers
environment using vulnerable versions of JRE Plugin. [...]''
- http://www.net-security.org/vuln.php?id=3018
Sun's page on the problem:
``A Vulnerability in JRE May Allow an Untrusted Applet to Escalate Privileges''
- http://sunsolve.sun.com/pub-cgi/retrieve.pl?doc=fsalert%2F57221&zone_32=category%3Asecurity
--
__________
|im |yler http://timtyler.org/ email***@***.com Remove lock to reply.
- 11
- Can we change enctype dynamically??Hello all,
Can we change enctype in the form tag using javascript
document.formname.enctype = 'variable' variable being
multipart/form-data or application/x-www-form-urlencoded. I can do
this in Netscape7 not in IE6 ??
My problem is when I am in the rendered page of type
mulipart/form-data, I have to call another servlet (which process
regular form fields only). When I do that it breaks.
If I use all my servlets to process enctype=mulipart/form-data jsp's
is there any performance or any kind of issues???
Any help will be appreciated.
Thanks - gsr
- 13
- imageicon problemHello,
I have problem with loading an image from a directory.
I got a folder called images wich is located in my project directory :
c:\MijnJava\Swing_01.
But when i start this application i get a window with a title and in this
window a square that indicates that the picture is not found. Earlier i set
my classpath : set classpath= .;c:\MijnJava; this is in windows xp.
I am using Jcreator. The code works fine on my computer in school but not at
home.
I tryed moving the folder images to other directorys but with no luck.
What is the problem with this?
Can anyone help?
thanks
Tom
import javax.swing.*;
import java.awt.*;
import javax.swing.border.*;
import tomwouters.myswingutils.*; This is a folder where my packages
are.
public class Afbeelding_01 extends ExitableJFrame{
public Afbeelding_01(String titel){
super(titel);
TitledBorder paneelBorder =
BorderFactory.createTitledBorder("JPanel");
Container container = getContentPane();
JPanel paneel = new JPanel();
paneel.setBorder(paneelBorder);
JLabel label = new JLabel();
JLabel label2 = new JLabel();
ImageIcon afbeelding = new ImageIcon("images/jugg23.gif");
label.setIcon(afbeelding);
TitledBorder labelBorder =
BorderFactory.createTitledBorder("JLabel met jugg23.gif");
label.setBorder(labelBorder);
paneel.add(label);
container.add(paneel);
pack();
}
public static void main(String[] args) {
Afbeelding_01 frameMetAfbeelding = new Afbeelding_01("Afbeelding_01");
frameMetAfbeelding.setVisible(true);
}
}
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| Author |
Message |
Elhanan
|
 Posted: 2006-4-26 22:33:00 |
Top |
java-programmer, Open Source quality better then closed?
hi...
i just wondered, does the fact you write a product as open source,
forces you to write better code, in the hopes (fears?) that who ever
may see you code in the future will be impressed (shocked?)
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Ed Kirwan
|
| Posted: 2006-4-26 22:56:00 |
Top |
java-programmer >> Open Source quality better then closed?
Elhanan wrote:
> hi...
>
> i just wondered, does the fact you write a product as open source,
> forces you to write better code, in the hopes (fears?) that who ever
> may see you code in the future will be impressed (shocked?)
>
No.
--
www.EdmundKirwan.com - Home of The Fractal Class Composition.
Download Fractality, free Java code analyzer:
www.EdmundKirwan.com/servlet/fractal/frac-page130.html
|
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Oliver Wong
|
| Posted: 2006-4-26 23:44:00 |
Top |
java-programmer >> Open Source quality better then closed?
"Ed Kirwan" <email***@***.com> wrote in message
news:e2o1mk$na0$email***@***.com...
> Elhanan wrote:
>> hi...
>>
>> i just wondered, does the fact you write a product as open source,
>> forces you to write better code, in the hopes (fears?) that who ever
>> may see you code in the future will be impressed (shocked?)
>>
>
> No.
To expand on that a bit, while it certainly is no guarantee of better
code, those hopes and fears may be a factor. Another is that closed source
software is typically written by people who code for money, whereas open
source software is typically written by people who code 'cause they love to
code.
- Oliver
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Thomas Fritsch
|
| Posted: 2006-4-26 23:47:00 |
Top |
java-programmer >> Open Source quality better then closed?
Elhanan wrote:
> i just wondered, does the fact you write a product as open source,
> forces you to write better code, in the hopes (fears?) that who ever
> may see you code in the future will be impressed (shocked?)
>
No, not necessarily. In my opinion it is not primarily a question of
open or closed source, but more a question of whether code-reviews are
part of the development/maintenance process or not. Note that a
closed-source project may or may not have code-reviews. The same applies
to an open-source project.
--
"Thomas:Fritsch$ops:de".replace(':','.').replace('$','@')
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Amfur Kilnem
|
| Posted: 2006-4-26 23:49:00 |
Top |
java-programmer >> Open Source quality better then closed?
"Elhanan" <email***@***.com> wrote in message
news:email***@***.com...
> hi...
>
> i just wondered, does the fact you write a product as open source,
> forces you to write better code, in the hopes (fears?) that who ever
> may see you code in the future will be impressed (shocked?)
Authors of open source programs do it for the kudos. Their primary
motivation is to impress people by adding one "cool feature" after another.
Most can't be bothered to fix bugs -- adding yet more "cool features" is way
more fun. The result is feature-laden programs that are buggy as hell.
Take OpenOffice, for example. I won't use that program any more. Each time
that I have used it, I have been rewarded by it simply vanishing without
trace, taking my document with it.
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Daniel Dyer
|
| Posted: 2006-4-26 23:56:00 |
Top |
java-programmer >> Open Source quality better then closed?
On Wed, 26 Apr 2006 15:32:32 +0100, Elhanan <email***@***.com> wrote:
> hi...
>
> i just wondered, does the fact you write a product as open source,
> forces you to write better code, in the hopes (fears?) that who ever
> may see you code in the future will be impressed (shocked?)
You'd hope so, but it doesn't seem to be the case. However, there is some
pretty poor code out there in some high-profile projects.
See http://www.jroller.com/page/fate/20060420 (contains strong language)..
Dan.
--
Daniel Dyer
http://www.dandyer.co.uk
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Oliver Wong
|
| Posted: 2006-4-27 0:17:00 |
Top |
java-programmer >> Open Source quality better then closed?
"Amfur Kilnem" <email***@***.com> wrote in message
news:pDM3g.64018$email***@***.com...
>
> "Elhanan" <email***@***.com> wrote in message
> news:email***@***.com...
>> hi...
>>
>> i just wondered, does the fact you write a product as open source,
>> forces you to write better code, in the hopes (fears?) that who ever
>> may see you code in the future will be impressed (shocked?)
>
> Authors of open source programs do it for the kudos. Their primary
> motivation is to impress people by adding one "cool feature" after
> another. Most can't be bothered to fix bugs -- adding yet more "cool
> features" is way more fun. The result is feature-laden programs that are
> buggy as hell.
Generalizations like these tend to have many exceptions. There are very
stable open source programs out there as well. Examples: Linux, Apache
HTTPD, Eclipse, Hibernate, phpBB, Azureus, Firefox, Thunderbird, GAIM,
ZSNES, BSD, etc.
Some projects take bug reports very seriously, with their developers
taking an oath to prioritize the elimination of bugs over the introduction
of new features. Also, because of the open source nature, it's possible for
the users to contribute bug fixes too. I've done it a couple of times for
some of the Java applications I've used.
- Oliver
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Timo Stamm
|
| Posted: 2006-4-27 1:22:00 |
Top |
java-programmer >> Open Source quality better then closed?
Oliver Wong schrieb:
> "Ed Kirwan" <email***@***.com> wrote in message
> news:e2o1mk$na0$email***@***.com...
>> Elhanan wrote:
>>> hi...
>>>
>>> i just wondered, does the fact you write a product as open source,
>>> forces you to write better code, in the hopes (fears?) that who ever
>>> may see you code in the future will be impressed (shocked?)
>>>
>>
>> No.
>
> To expand on that a bit, while it certainly is no guarantee of better
> code, those hopes and fears may be a factor. Another is that closed
> source software is typically written by people who code for money,
> whereas open source software is typically written by people who code
> 'cause they love to code.
People who code for money do not necessarily write better code than
people who just love to code. In fact, I think that you have to get paid
*and* love to code to achive the best possible quality.
Yes, there is a lot of open source software written by non-professionals
that is of very low quality. But how does one know whether the closed
source competition is any better?
Timo
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Patricia Shanahan
|
| Posted: 2006-4-27 2:12:00 |
Top |
java-programmer >> Open Source quality better then closed?
Timo Stamm wrote:
> Oliver Wong schrieb:
>
>> "Ed Kirwan" <email***@***.com> wrote in message
>> news:e2o1mk$na0$email***@***.com...
>>
>>> Elhanan wrote:
>>>
>>>> hi...
>>>>
>>>> i just wondered, does the fact you write a product as open source,
>>>> forces you to write better code, in the hopes (fears?) that who ever
>>>> may see you code in the future will be impressed (shocked?)
>>>>
>>>
>>> No.
>>
>>
>> To expand on that a bit, while it certainly is no guarantee of
>> better code, those hopes and fears may be a factor. Another is that
>> closed source software is typically written by people who code for
>> money, whereas open source software is typically written by people who
>> code 'cause they love to code.
>
>
> People who code for money do not necessarily write better code than
> people who just love to code. In fact, I think that you have to get paid
> *and* love to code to achive the best possible quality.
>
> Yes, there is a lot of open source software written by non-professionals
> that is of very low quality. But how does one know whether the closed
> source competition is any better?
...
I don't think there is any automatic answer in either direction. You MAY
have more recourse if paid software does not do what it is supposed to
do, depending on license terms, contracted support etc.
Development processes are often designed to ensure that more than one
person sees each piece of code before it is shipped. Traditional,
heavyweight processes include coding reviews. Extreme programming uses
pair programmer, so that two programmers consider each line as it is
being typed.
Patricia
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Monique Y. Mudama
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| Posted: 2006-4-27 7:33:00 |
Top |
java-programmer >> Open Source quality better then closed?
On 2006-04-26, Elhanan penned:
> hi...
>
> i just wondered, does the fact you write a product as open source,
> forces you to write better code, in the hopes (fears?) that who ever
> may see you code in the future will be impressed (shocked?)
I don't think there's any one answer to this, just as not every
programmer has exactly the same personality and motivations.
--
monique
Help us help you:
http://www.catb.org/~esr/faqs/smart-questions.html
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Scott Ellsworth
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| Posted: 2006-4-27 7:55:00 |
Top |
java-programmer >> Open Source quality better then closed?
In article <email***@***.com>,
"Elhanan" <email***@***.com> wrote:
> i just wondered, does the fact you write a product as open source,
> forces you to write better code, in the hopes (fears?) that who ever
> may see you code in the future will be impressed (shocked?)
For me, this is not a motivator. What makes me write good code is,
well, pride in workmanship. Occasionally, I have written something ugly
in order to get the overall structure to a working state, but those tend
to be pretty well documented. In the main, I want to have written
something to be proud of, whether it is going on my hard drive for me,
on the Alodar server for others here, to a client for a paid project, or
to an open source project for all to see.
Every line of code you write is a an expression of an idea, using time
you will never, ever get back. It thus behooves you to write the best
stuff you can. Since life is a series of trade offs, people optimize
for different things at different times - speed, space, prior knowledge,
what they want to learn next, but the wise are aware of that, and at
least try to select the optimization mix based on real needs, rather
than the voices in their head.
If I know something is going into an open source project, I may spend
more time making it maintainable, as many such projects have a wide
array of contributors. I may also pick an implementation method that I
judge least likely to cause controversy, as time spent arguing about
trivia is time spent not fixing important things.
I may also have different amounts of time to spend, if I am working on
my own time, as opposed to working for a client.
If public acclaim and disdain motivate you strongly, then you may well
find that your open source work looks very different than your closed
source work. Nothing wrong with that, as long as you are aware of the
motivation, and weigh it accordingly.
Scott
--
Scott Ellsworth
email***@***.com
Java and database consulting for the life sciences
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Timo Stamm
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| Posted: 2006-4-27 10:58:00 |
Top |
java-programmer >> Open Source quality better then closed?
Patricia Shanahan schrieb:
> Timo Stamm wrote:
>> People who code for money do not necessarily write better code than
>> people who just love to code. In fact, I think that you have to get
>> paid *and* love to code to achive the best possible quality.
>>
>> Yes, there is a lot of open source software written by
>> non-professionals that is of very low quality. But how does one know
>> whether the closed source competition is any better?
> ...
>
> I don't think there is any automatic answer in either direction.
Neither do I.
> You MAY
> have more recourse if paid software does not do what it is supposed to
> do, depending on license terms, contracted support etc.
Companies like to have someone to take responsibility. They pay for a
Microsoft Software Assurance to get telephone support, trainings, and
software updates. Most linux distributors have similar offerings. On a
smaller scale, software companies can offer consulting and support for
an open source project. Take jetty for example.
They create revenue by taking responsibility for the software. Customers
will have a comparable recourse, provided that license terms, contracted
support etc. are comparable.
> Development processes are often designed to ensure that more than one
> person sees each piece of code before it is shipped. Traditional,
> heavyweight processes include coding reviews.
I am sure there are a lot more open source projects with a flawed or
incomplete development process than closed source projects. Some people
love to code free software, but few people love free testing.
> Extreme programming uses
> pair programmer, so that two programmers consider each line as it is
> being typed.
I tried that once. My coworker gave up after 5 minutes :)
Timo
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Oliver Wong
|
| Posted: 2006-4-28 0:03:00 |
Top |
java-programmer >> Open Source quality better then closed?
"Timo Stamm" <email***@***.com> wrote in message
news:44503347$0$4513$email***@***.com...
>> Extreme programming uses
>> pair programmer, so that two programmers consider each line as it is
>> being typed.
>
> I tried that once. My coworker gave up after 5 minutes :)
Which one of you two was typing at the time?
- Oliver
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Timo Stamm
|
| Posted: 2006-4-28 5:53:00 |
Top |
java-programmer >> Open Source quality better then closed?
Oliver Wong schrieb:
>
> "Timo Stamm" <email***@***.com> wrote in message
> news:44503347$0$4513$email***@***.com...
>>> Extreme programming uses
>>> pair programmer, so that two programmers consider each line as it is
>>> being typed.
>>
>> I tried that once. My coworker gave up after 5 minutes :)
>
> Which one of you two was typing at the time?
He was typing. He is a very capable programmer, but a terrible
team-player. We are back to code reviews.
Timo
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geletine
|
| Posted: 2006-4-28 6:32:00 |
Top |
java-programmer >> Open Source quality better then closed?
A lot of open source projects are supported by big companies, such as
IBM, SUN, Novell, so in effect a lot is done by paid coders opposed to
spare time people may have.
Lets not forget GPL,BSD/MIT etc is not free food,
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Tris Orendorff
|
| Posted: 2006-4-29 3:47:00 |
Top |
java-programmer >> Open Source quality better then closed?
Ed Kirwan <email***@***.com> burped up warm pablum in
news:e2o1mk$na0$email***@***.com:
> Elhanan wrote:
>> hi...
>>
>> i just wondered, does the fact you write a product as open source,
>> forces you to write better code, in the hopes (fears?) that who ever
>> may see you code in the future will be impressed (shocked?)
>>
>
> No.
Yes!
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Index ‹ java-programmer |
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