For the love of all things holy, don't re-write the entire system. It will take a long time and cost more than you could ever imagine spending on improving the application. Plus, what will you do in the 2 years it takes you to re-write? What if the new version doesn't work any better either?
As numerous people have pointed out, 100K of objects per session is insane.
There are dozens of tools out there you can use to track down the bottlenecks in your code.
Any of these tools, along with a competent developer/analyst, can improve your app performance. I used to teach classes on Java performance tuning at one of these companies and I saw people get huge performance improvements from very simple changes - once they knew what to change.
Yahoo MailPlus gives you POP, 25MB, very good spam filtering.
Yes, I know the question said FREE but really, is $35 USD that much? I use email every day. It was money well spent for me. What else do you get for $35 a year?
Elitist, perhaps, but that's the advantage of the "old media" - it's pre-filtered by people with talent and style.
Blogs are by no means the only offender, but until Google developers a "taste" filter, leaving them out will do.
Besides, have you seen any "A-list" blogs lately? Google News is better written than scripting.com. Winer's blog is a list of single-word hyperlinks to more single-word link blogs. Cripes. I'd make a Zork joke, but really, being trapped in the twizty maze of passages is more enjoyable than reading scripting.com.
Re: Bandwidth Requirements... it depends on how big the app is, ho wmany people want to download it, etc. DeployDirector does differential updating to minimize updates once you've done the first install, but the first time can be slow due to the JRE download, app, support files, etc.
Security settings... you have to be able to run an applet. Other than that I couldn't say as I'm not the product expert. Check the docs.;)
I'm blatantly plugging our product here, but DeployDirector sends a bootstrap client using whatever crappy VM is installed in the browser and uses that to install a real JVM, the application and lots of other stuff. It absolutely meets the requirement of letting you run stuff on a machine without ever doing a "installation". You click on a hyperlink in a browser and magic happens.
DeployDirector will deploy client-side Java apps through a browser exactly how you need it to. It deploys full apps, not applets. It will use the browser's VM, any version, to bootstrap the installation of another, better JRE on the system, install the whole app, everything.
It's similar to Java Web Start, but we began before Web Start and are a much more complete, industrial-strength solution. Check the web site for the obligitory customer success stories.
Yes, it costs money. Try using plain Web Start for a while and you'll see why - it's worth it. You can evaluate it for free though.
Well, covariant return types are not exactly a substitute for generics, but they're still really useful. A lack of covariant return types is really just dumb, as it requires you to have methods like
public class Sub {
public void Object clone() {... } }
so when you call
Sub s =... Sub s2;
s2 = s.clone();
you get a compile error. Ugh.
Covariant return types aren't a feature, lack of them is a bug.
Yes, I did regularly use my Thinkpad on batteries. Unlike the students who got them I used my for business which involved regular meetings without being plugged in and flights where I ran both the primary and secondary battery down. Yes, it looks like a problem with overcharging. Not EVERYONE had the problem, but yes, it looks like MANY people had the problem and I was just trying to point out the difference.
I can't believe I just wasted 5 minutes explaining that.
Thinpad 600x, at least 4 years old, main battery is A-OK and even the Ultrabay battery is going fine. We had a few dozen on these things at work. Some batteries had to be replaced after a year or two, but most are still going on the original battery.
Thinkpad 770 batteries, that's another story. Of course, that thing was almost a desktop with a TFT built into it, but still, it had battery problems.
Porn drove the mass adoption of the internet for anything other than e-mail - I mean, who had the first e-commerce sites? It wasn't LL Bean.
Porn drove turnkey IVR systems that are now used extensively in a lot of other industries. There'd be no college registration by phone if there wasn't phone sex.
I don't know who the crackheads are who say that Chrysler bought Daimler, but as to why D bought C... IT workers. It's easier to buy a similar company rich in the resource you lack than to try to build a decent infrastructure. Same reason Cisco used to buy all those small companies - it's cheaper to buy them than to pay for the research.
Bill gets Charles out of his hair, that's what. The guy was probably too much trouble to keep around and it was easier to give him some (to MS) worthless IP that to keep dealing with him.
Also, he is kind of Bill & Steve's buddy from way back - Simonyi was, what, employee #4 or something?
Wow, I get to be the first person to post something actually informative.
Simonyi was big on what he called 'Intentional Programming' (yes, as opposed to UNintentional programming, which is what we've been doing all along I suppose.) It's been in the works since at least '94 which is when a classmate of mine went to work on the project after graduating.
He got shafted as the power inside the dev tools group shifted. Most of his group got cut loose and ended up looking for other positions, Oddly enough, Simonyi himself left the group and gave up on it a year or so ago apparently without telling the remaining core of the group.
See:
http://web.archive.org/web/20000815211509/http:/ /w ww.research.microsoft.com/ip/ http://www.edge.org /digerati/simonyi/simonyi_p1.ht ml http://www.omniscium.com/nerdy/ip/ http://www .aisto.com/roeder/active/ifip96.pdf
> > GOF patterns are for people who don't know how to
> > properly use a database
> It is difficult to imagine the narrowness of
> perspective that could result in such a statement.
Then you've never seen Tablizer's web site.
He is a crank par-excellence. Or a troll with a level of committment that the world has seldom seen. Anyway, he firmly believes that every data structure in the world can be reduced to tables. Check out his web site sometime.
It's been a while but 'Hard-Boiled Wonderland and the End of the World', aside from having an amazing title, is also a great book.
A Review and a bookstore.
I never realized there were any Japanese cyberpunk authors until I read it. Most cyberpunk seems to be a glossy update to good old fashioned Orientalism. Anyway, the guy is a great author.
Mr.Mirror creates mirror images of a selection of directories and/or single files. Features include: logging, file filters, templates, zip compression, find redundant files, networking, drag & drop, a built-in scheduler and more.
It's a pretty simple tool but it does the job and it's pretty cheap to boot. It requires some support on the backend to copy the data onto tapes or something, but it's definitely worth looking into.
How the hell did this get modded insightful? This is in no way a classloader problem and would not be helped by using a jar. The complaint was about multiple
public class definitions in a _source_ file which is more a design decision to promote good programming style than anything else.
Because they didn't read the original question any better than I did and mis-read source files as compiled bytecode files.
Anyway, yes, it's to promote general code cleanliness and to avoid the need to have to grep through code to find the class definition you're looking for. It also makes the compiler's life easier in doing dependency checking when searching for interface definitions at compile time.
You could design a compiler that didn't have this restriction, but why? It's not that big a deal.
3) One (public) class per file. This especially bugs me with small interfaces. Such a waste of screen space and disk space (each file takes up 4k on the file
system)... Why not allow to put a hierarchy of interfaces (and, preferably, classes) in one file?
Well, this is really a classloader limitation... there's no restriction to loading classes from a databse, across the network, from your back pocket, etc, as long as you've got an appropriate classloader.
Besides, there are those things called JAR files... have you used Java much?
Slashdot Mirror
What took so long for someone to make this joke? I was expecting it to be the first post.
Yeah, they downloaded from PureTracks.com
As numerous people have pointed out, 100K of objects per session is insane.
There are dozens of tools out there you can use to track down the bottlenecks in your code.
http://www.quest.com/jprobe
http://www.quest.com/performasure
http://www.borland.com/optimizeit/index.html
http://www.wilytech.com
Any of these tools, along with a competent developer/analyst, can improve your app performance. I used to teach classes on Java performance tuning at one of these companies and I saw people get huge performance improvements from very simple changes - once they knew what to change.
Yahoo MailPlus gives you POP, 25MB, very good spam filtering.
Yes, I know the question said FREE but really, is $35 USD that much? I use email every day. It was money well spent for me. What else do you get for $35 a year?
Anyway, it's not 1999 anymore. Pay for it.
Elitist, perhaps, but that's the advantage of the "old media" - it's pre-filtered by people with talent and style.
Blogs are by no means the only offender, but until Google developers a "taste" filter, leaving them out will do.
Besides, have you seen any "A-list" blogs lately? Google News is better written than scripting.com. Winer's blog is a list of single-word hyperlinks to more single-word link blogs. Cripes. I'd make a Zork joke, but really, being trapped in the twizty maze of passages is more enjoyable than reading scripting.com.
The logicical conclusion, IMO, is to bar blogs from being spidered by google.
If nothing else it will prevent me from having to hear about everyone's freaking lunch any further.
In a drive bay is pretty small... there are plenty of 1U keyboard/LCD combos though.
/ LK M-920B.htm is just one.
http://www.armorlink.com/product/lcd_displaykit
Re: Bandwidth Requirements... it depends on how big the app is, ho wmany people want to download it, etc. DeployDirector does differential updating to minimize updates once you've done the first install, but the first time can be slow due to the JRE download, app, support files, etc.
;)
Security settings... you have to be able to run an applet. Other than that I couldn't say as I'm not the product expert. Check the docs.
http://www.deploydirector.com
I'm blatantly plugging our product here, but DeployDirector sends a bootstrap client using whatever crappy VM is installed in the browser and uses that to install a real JVM, the application and lots of other stuff. It absolutely meets the requirement of letting you run stuff on a machine without ever doing a "installation". You click on a hyperlink in a browser and magic happens.
Disclaimer: this is a commercial product made by the company I work for.
http://www.sitraka.com/software/deploydirector/
DeployDirector will deploy client-side Java apps through a browser exactly how you need it to. It deploys full apps, not applets. It will use the browser's VM, any version, to bootstrap the installation of another, better JRE on the system, install the whole app, everything.
It's similar to Java Web Start, but we began before Web Start and are a much more complete, industrial-strength solution. Check the web site for the obligitory customer success stories.
Yes, it costs money. Try using plain Web Start for a while and you'll see why - it's worth it. You can evaluate it for free though.
Well, covariant return types are not exactly a substitute for generics, but they're still really useful. A lack of covariant return types is really just dumb, as it requires you to have methods like
... }
...
public class Sub {
public void Object clone() {
}
so when you call
Sub s =
Sub s2;
s2 = s.clone();
you get a compile error. Ugh.
Covariant return types aren't a feature, lack of them is a bug.
So, in short, no, you're just imagining it.
Nice bit of flamebait there.
Oh, geez, can no one take a joke in this place?
Yes, I did regularly use my Thinkpad on batteries. Unlike the students who got them I used my for business which involved regular meetings without being plugged in and flights where I ran both the primary and secondary battery down. Yes, it looks like a problem with overcharging. Not EVERYONE had the problem, but yes, it looks like MANY people had the problem and I was just trying to point out the difference.
I can't believe I just wasted 5 minutes explaining that.
Thinpad 600x, at least 4 years old, main battery is A-OK and even the Ultrabay battery is going fine. We had a few dozen on these things at work. Some batteries had to be replaced after a year or two, but most are still going on the original battery.
Thinkpad 770 batteries, that's another story. Of course, that thing was almost a desktop with a TFT built into it, but still, it had battery problems.
Personally, I'm loving my new T30.
So, in short, no, you're just imagining it.
Porn drove the adoption of the VCR.
Porn drove the mass adoption of the internet for anything other than e-mail - I mean, who had the first e-commerce sites? It wasn't LL Bean.
Porn drove turnkey IVR systems that are now used extensively in a lot of other industries. There'd be no college registration by phone if there wasn't phone sex.
Porn makes the world go 'round.
I don't know who the crackheads are who say that Chrysler bought Daimler, but as to why D bought C... IT workers. It's easier to buy a similar company rich in the resource you lack than to try to build a decent infrastructure. Same reason Cisco used to buy all those small companies - it's cheaper to buy them than to pay for the research.
Would you feel comfortable with a radioactive power source on your lap?
I already have a radioactive power source in my lap. And it's HOT.
Gee, too bad there's already the same thing... in Compact Flash.
0 00 .asp
http://www.shoppingpda.com/product/rtm8000/rtm8
GSM/GPRS, Tri-band, data, earphone jack for voice calls, supports PDAs & Windows - oh, and it's only $283 USD. Cheaper too.
What does Microsoft get?
Bill gets Charles out of his hair, that's what. The guy was probably too much trouble to keep around and it was easier to give him some (to MS) worthless IP that to keep dealing with him.
Also, he is kind of Bill & Steve's buddy from way back - Simonyi was, what, employee #4 or something?
Wow, I get to be the first person to post something actually informative.
/ /w ww.research.microsoft.com/ip/g /digerati/simonyi/simonyi_p1.ht mlw .aisto.com/roeder/active/ifip96.pdf
Simonyi was big on what he called 'Intentional Programming' (yes, as opposed to UNintentional programming, which is what we've been doing all along I suppose.) It's been in the works since at least '94 which is when a classmate of mine went to work on the project after graduating.
He got shafted as the power inside the dev tools group shifted. Most of his group got cut loose and ended up looking for other positions, Oddly enough, Simonyi himself left the group and gave up on it a year or so ago apparently without telling the remaining core of the group.
See:
http://web.archive.org/web/20000815211509/http:
http://www.edge.or
http://www.omniscium.com/nerdy/ip/
http://ww
> > GOF patterns are for people who don't know how to
> > properly use a database
> It is difficult to imagine the narrowness of
> perspective that could result in such a statement.
Then you've never seen Tablizer's web site.
He is a crank par-excellence. Or a troll with a level of committment that the world has seldom seen. Anyway, he firmly believes that every data structure in the world can be reduced to tables. Check out his web site sometime.
JWZ's list is so out of date it's not funny. Some of the issues are legit, but a lot are irrelevant. It is 2 years old you know.
I never realized there were any Japanese cyberpunk authors until I read it. Most cyberpunk seems to be a glossy update to good old fashioned Orientalism. Anyway, the guy is a great author.
I'm not the sysadmin around here, but we use a little program called "Mr.Mirror" from WarpGear software.
Mr.Mirror
Mr.Mirror creates mirror images of a selection of directories and/or single files. Features include: logging, file filters, templates, zip compression, find redundant files, networking, drag & drop, a built-in scheduler and more.
It's a pretty simple tool but it does the job and it's pretty cheap to boot. It requires some support on the backend to copy the data onto tapes or something, but it's definitely worth looking into.
How the hell did this get modded insightful? This is in no way a classloader problem and would not be helped by using a jar. The complaint was about multiple public class definitions in a _source_ file which is more a design decision to promote good programming style than anything else.
Because they didn't read the original question any better than I did and mis-read source files as compiled bytecode files.
Anyway, yes, it's to promote general code cleanliness and to avoid the need to have to grep through code to find the class definition you're looking for. It also makes the compiler's life easier in doing dependency checking when searching for interface definitions at compile time.
You could design a compiler that didn't have this restriction, but why? It's not that big a deal.
3) One (public) class per file. This especially bugs me with small interfaces. Such a waste of screen space and disk space (each file takes up 4k on the file system)... Why not allow to put a hierarchy of interfaces (and, preferably, classes) in one file?
Well, this is really a classloader limitation... there's no restriction to loading classes from a databse, across the network, from your back pocket, etc, as long as you've got an appropriate classloader.
Besides, there are those things called JAR files... have you used Java much?