Re: Offtopic: Quick Java programming question...
From: "Bip Thelin" [EMAIL PROTECTED] Try exchange "return (Hashtable[]) stuff.toArray()" with: "return (Hashtable[]) stuff.toArray(new Hashtable[0])" It should do the trick. This is more efficient: return (Hashtable[]) stuff.toArray(new Hashtable[stuff.size()]); because the data will be put in the same array you pass to toArray(). In the previous code, the data can't fit in the zero-element parameter, so toArray() creates a new array, using the parameter only to know the type. This creation uses reflection, so it's even slower than a normal new. And the following is even faster (by a hair): Hashtable ret = new Hashtable[stuff.size()]; stuff.toArray(new Hashtable[ret]); return ret; because you avoid the evil typecheck. === To unsubscribe: mailto [EMAIL PROTECTED] with body: "signoff JSP-INTEREST". Some relevant FAQs on JSP/Servlets can be found at: http://java.sun.com/products/jsp/faq.html http://www.esperanto.org.nz/jsp/jspfaq.html http://www.jguru.com/jguru/faq/faqpage.jsp?name=JSP http://www.jguru.com/jguru/faq/faqpage.jsp?name=Servlets
Re: Offtopic: Quick Java programming question...
Oops. I actually wanted to type this: -- And the following is even faster (by a hair): Hashtable ret = new Hashtable[stuff.size()]; stuff.toArray(ret); return ret; because you avoid the evil typecheck. === To unsubscribe: mailto [EMAIL PROTECTED] with body: "signoff JSP-INTEREST". Some relevant FAQs on JSP/Servlets can be found at: http://java.sun.com/products/jsp/faq.html http://www.esperanto.org.nz/jsp/jspfaq.html http://www.jguru.com/jguru/faq/faqpage.jsp?name=JSP http://www.jguru.com/jguru/faq/faqpage.jsp?name=Servlets
Re: garbage collection
From: "Kathy Wargo" [EMAIL PROTECTED] we are developing a java application using servlet but after a few runs the application slows down. We noticed that this happens once the JVM's heap size reaches 16M. I would assume the garbage collection would be invoked and clear up the heap but this does not seem to be happening. We have tried to use finalize() methods and system.gc() also in the objects that are being created so that the garbage collector can free up the memory but nothing seems to be bringing the heap size down. Even leaving the computer idle for some time does not seem to be freeing up the resources. Any clues? You should analyze the app with some memory monitoring tool (NuMega's, etc.) Garbage collection cannot dispose objects if you have contention bugs (i.e., failing to eliminate all references to objects you don't need anymore). And maybe there's no problem at all; you should expect memory usage to increase and reach a higher plateau after a few runs, because the servlet engine will load servlet classes, set up thread and connection pools, maybe cache static content, and god knows what else. Server-side architectures are optimized for speed rather than memory usage; 16Mb is a rather small tiny heap, and unless you're running on extremely tight hardware or using a very old JVM, a heap that small shouldn't have any impact on performance. === To unsubscribe: mailto [EMAIL PROTECTED] with body: "signoff JSP-INTEREST". Some relevant FAQs on JSP/Servlets can be found at: http://java.sun.com/products/jsp/faq.html http://www.esperanto.org.nz/jsp/jspfaq.html http://www.jguru.com/jguru/faq/faqpage.jsp?name=JSP http://www.jguru.com/jguru/faq/faqpage.jsp?name=Servlets
Re: Apache With Tomcat
From: Gogia Nitin [mailto:[EMAIL PROTECTED]] What's the use of using Apache With Tomcat when Tomcat itself can service all the requests for servlets ? I just put in production a JSP app running on top of TomCat alone. We had considered using Apache, but because nearly 100% of the pages are dynamically served and the webserver is dedicated to this application, it was better to just set up TomCat for port 80 and forget about Apache. You want to combine TomCat to a full-featured webservfer like Apache if: 1) You have a significant volume of static content. Apache will probably be more efficient here (I don't think TomCat will even cache static HTMLs/images). 2) You need advanced features, like those provided by Apache modules, which are not available in TomCat's basic webserver. 3) You worry about security. Apache is recognized as a robust, secure server. TomCat is very new and it might have security bugs/backdoors. My app is in the intranet, so I don't care -- no kids trying to steal data, replace the homepage with some porn, or put it down with DoS. 4) The webserver will handle multiple web sites/applications, and TomCat is not ideal for all of them. On the other hand, using only TomCat is more efficient for dynamic content (because you skip an expensive routing of everything through Apache) and it's one thing less to install and admin. Now, the following is inaccurate: From: "peter" [EMAIL PROTECTED] OK here is an attempt Apache provides the basic tcp/ip protocol stack to service web request/response Tomcat provides a specific protocol for servlet /jsp communication and is built on top of apache(an additional application layer protocol).Without apache the lower layers would be missing and tomcat will not be able to communicate to the network. Please point out any inaccuracies or mistakes you may find that way we all learn. TomCat serves HTTP directly, it doesn't need Apache at all. TomCat (just like other servlet engines) can communicate with Apache (or other full- featured httpd's) through a bridge. For TomCat/Apache, the bridge is the JServ module that you put in apache. It's the bridge that uses a special protocol or binary interface, so the webserver an servlet engine might pipe requests and responses back and forth. === To unsubscribe: mailto [EMAIL PROTECTED] with body: "signoff JSP-INTEREST". Some relevant FAQs on JSP/Servlets can be found at: http://java.sun.com/products/jsp/faq.html http://www.esperanto.org.nz/jsp/jspfaq.html http://www.jguru.com/jguru/faq/faqpage.jsp?name=JSP http://www.jguru.com/jguru/faq/faqpage.jsp?name=Servlets
Re: *** Oracle hates JDBC Servlets?
Hi, I'm using Oracle 8.1.5 but I downloaded 8.1.6's "classes12.zip" and it works fine for me (Java2+TomCat3.1). As long as Oracle doesn't change their network DB protocol, you can use the latest-and-greatest driver with previous versions of Oracle. It may be a better solution. - Original Message - From: Germán López Castro To: [EMAIL PROTECTED] Sent: Tuesday, May 09, 2000 4:45 AM Subject: Re: *** Oracle hates JDBC Servlets? Hi-u-all! I got the answer to my trouble with Servlets that connect to *EVIL* Oracle8i databases. The question why they don't wanna work using Oracle JDBC drivers but they do with JDBC-ODBC driver is the following: I am using Resin Web Server, which runs over JDK 1.2 environment. My version of Oracle8i is 8.1.5.0.0 which internally works on JRE 1.1.7 (JDK 1.1 compatible). When I try to connect the servlet to the database (of course it's done by means of my web server), I have two choices: 1. Use jdbc\lib\classes111.zip . This zip file contains the db classes that come with Oracle8i. These classes are JDK 1.1 compliant. So the system is able to load the driver into memory (a Class.forName () opperation) but the server can't handle jdbc requests. 2. Use classes12.zip . This is the zip file containing the db classes to work with JDK 1.2 . So the system loads the driver, connect succesfully to the database, but when it asks to the database for a result, the database can't handle jdbc requests. SOLUTIONS: ~~ 1. Use JDBC-ODBC drivers. It's platform-dependent (works only over Windows) and is coming obsolete, but ***IT WORKS*** 2. Use another web server that is JDK 1.1 compliant (e.g. Apache Web Server + Apache JServ works over JDK 1.1.8) and use classes111.zip . Apache is powerful and the most used web server, but setup is awful, because it uses its own directives. 3. Download Oracle8i 8.1.6, which is JDK 1.2 compliant, and use classes12.zip I hope it can be useful for somebody. See-u-soon. Consigue tu direccisn de email gratis y permanente en http://WWW.LETTERA.NET = To unsubscribe: mailto [EMAIL PROTECTED] with body: "signoff JSP-INTEREST". Some relevant FAQs on JSP/Servlets can be found at: http://java.sun.com/products/jsp/faq.html http://www.esperanto.org.nz/jsp/jspfaq.html http://www.jguru.com/jguru/faq/faqpage.jsp?name=P http://www.jguru.com/jguru/faq/faqpage.jsp?name=rvlets === To unsubscribe: mailto [EMAIL PROTECTED] with body: "signoff JSP-INTEREST". Some relevant FAQs on JSP/Servlets can be found at: http://java.sun.com/products/jsp/faq.html http://www.esperanto.org.nz/jsp/jspfaq.html http://www.jguru.com/jguru/faq/faqpage.jsp?name=JSP http://www.jguru.com/jguru/faq/faqpage.jsp?name=Servlets
Re: Java VM memory
Hi Leon, - Original Message - From: "Leon Daanen" [EMAIL PROTECTED] I am using the Tomcat server. If the tomcat server is started 64 Mb of memory is allocated (which seems to be default). I use an upload jsp file through which I will be able to upload big files (perhaps 100Mb or more). I changed the tomcat.bat file by adding the java -Xmx100m piece (which should allocate 100Mb of memory for the jvm). But this is not working. I am getting an OutOfMemory error when I am uploading a file which is bigger than 50 Mb. I believe that the JVM *is* working as expected. The problem is working with a single object that's larger than 50% of the free space in the heap. This will make some garbage collectors very unhappy, when they need to move stuff around. You may succeed using a different JVM or even bigger -mx, but you should really change your code -- loading a 50-megger to memory in a single chunk is insane (for a single upload, anyway). Below the piece of the tomcat.bat file where the jvm is started and should allocate 100Mb for the java virtual machine. :startServer echo Starting tomcat in new window echo Using classpath: %CLASSPATH% start java -Xmx100m -Dtomcat.home=%TOMCAT_HOME% org.apache.tomcat.startup.Tomcat %2 %3 %4 %5 %6 %7 %8 %9 goto cleanup Can anybody tell me what I am doing wrong. Thank in advance, Leon --- name: Leon Daanen E-mail: [EMAIL PROTECTED] Tel.: +31 77 359 5172 Fax.: +31 77 359 5337 Location: 3G20 Oce Technologies B.V. www:http://www.oce.com Tel.: +31 77 359 P.O. Box 101 5900 MA Venlo The Netherlands --- Opinions and views expressed in this message are my own, they do not necessarily represent those of Océ --- === To unsubscribe: mailto [EMAIL PROTECTED] with body: "signoff JSP-INTEREST". Some relevant FAQs on JSP/Servlets can be found at: http://java.sun.com/products/jsp/faq.html http://www.esperanto.org.nz/jsp/jspfaq.html http://www.jguru.com/jguru/faq/faqpage.jsp?name=JSP http://www.jguru.com/jguru/faq/faqpage.jsp?name=Servlets === To unsubscribe: mailto [EMAIL PROTECTED] with body: "signoff JSP-INTEREST". Some relevant FAQs on JSP/Servlets can be found at: http://java.sun.com/products/jsp/faq.html http://www.esperanto.org.nz/jsp/jspfaq.html http://www.jguru.com/jguru/faq/faqpage.jsp?name=JSP http://www.jguru.com/jguru/faq/faqpage.jsp?name=Servlets
Re: 64K limit
From: "Howard Lee" [EMAIL PROTECTED] Hi guys, I'm using Tomcat, and one of my JSPs got pretty big, and I'm getting this error message. "Code of a method longer than 65535 bytes" Is there any way to get around to it? Is there a way to increase this limit? Thanks. This limit is imposed by the Java VM Specification, because the .class file format uses 16-bit numbers for code indices in the exception tables, line number tables and local variable tables. Some older VMs failed to enforce this rule (you could get away with big methods having no debug info or exceptions), but current ones don't. You should try to make the generated method shorter, by moving big chunks of Java into new methods, or some other trick. === To unsubscribe: mailto [EMAIL PROTECTED] with body: "signoff JSP-INTEREST". Some relevant FAQs on JSP/Servlets can be found at: http://java.sun.com/products/jsp/faq.html http://www.esperanto.org.nz/jsp/jspfaq.html http://www.jguru.com/jguru/faq/faqpage.jsp?name=JSP http://www.jguru.com/jguru/faq/faqpage.jsp?name=Servlets
Re: Thread and JVM
From: "Scott Stirling" [EMAIL PROTECTED] This is an operating system question. Every operating system I know of has a default limitation on how many threads a single process can run. On Windows NT I believe (correct me if I'm wrong) the limit is 2048. On some UNIXes it's 1024. On Solaris 8 I want to say it's theoretically unlimited. Regardless, it's a limit set by the operating system, it's usually tuneable, and the JVM has nothing to do with it. Scott Stirling Well, not all Java implementations map Java threads to OS threads. AFAIK the JRockIt VM does a N-to-N mapping btw Java/OS threads, and Tower's static compiler implements their own threading instead of using the OS's. So, if you're using anything other than the vanilla, "standard" Sun JDK, the question should be routed to the vendor. - Original Message - From: Laura Duong [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Saturday, April 22, 2000 4:36 PM Subject: Thread and JVM Hi ... It ' s a great place to learn here... Question: "How many thread can a VM handle ? max ? and why? Please help - Thanks, Laura Duong === To unsubscribe: mailto [EMAIL PROTECTED] with body: "signoff JSP-INTEREST". Some relevant FAQs on JSP/Servlets can be found at: http://java.sun.com/products/jsp/faq.html http://www.esperanto.org.nz/jsp/jspfaq.html http://www.jguru.com/jguru/faq/faqpage.jsp?name=JSP http://www.jguru.com/jguru/faq/faqpage.jsp?name=Servlets === To unsubscribe: mailto [EMAIL PROTECTED] with body: "signoff JSP-INTEREST". Some relevant FAQs on JSP/Servlets can be found at: http://java.sun.com/products/jsp/faq.html http://www.esperanto.org.nz/jsp/jspfaq.html http://www.jguru.com/jguru/faq/faqpage.jsp?name=JSP http://www.jguru.com/jguru/faq/faqpage.jsp?name=Servlets
Re: Resin from Caucho
- Original Message - From: "Scott Ferguson" [EMAIL PROTECTED] Resin/IBM 620 529 553 4384 Orion/JDK1.2 192 190 428549 Resin/JDK1.2 267 212 234671 I just put in production a JSP app running on TomCat 3.1, which performance looks very good right now (in a few months the system should grow significantly in # of users, so maybe I'll need a commercial engine...). Anyway, I see that you don't test Orion on IBM JDK. I suppose Orion requires Java2 and you're running IBM 1.1.8. Why don't you try IBM 1.2.2, it's available inside DirectDOM (you can grab this thing from AlphaWorks). Also, after a certain point, the servlet engine performance really doesn't matter. You'll be stuck with database overhead or your own code. Well, this is true for a dumb server with low-level database code (e.g. JDBC). Gotta use a persistence engine including a good object cache. Reads vastly dominate creates updates in most database apps, so all you gotta do is not destroying your persistent objects immediately after they're used, only to reincarnate them in the next millisecond when a new request comes. Maybe even a decent JDBC driver with a good client-side cache would serve. But I agree that the application code will outweight everything else, if it's not a simple read-database-write-HTML toy. === To unsubscribe: mailto [EMAIL PROTECTED] with body: "signoff JSP-INTEREST". Some relevant FAQs on JSP/Servlets can be found at: http://java.sun.com/products/jsp/faq.html http://www.esperanto.org.nz/jsp/jspfaq.html http://www.jguru.com/jguru/faq/faqpage.jsp?name=JSP http://www.jguru.com/jguru/faq/faqpage.jsp?name=Servlets
Re: multiplication error
From: "Sylvain Roche" [EMAIL PROTECTED] I'm using Blackdown's 1.2.2 JDK, but I remember having the same trouble in the past with others jdk too. I must be misdoing something : take two floats and multiply them : it works in most cases. Most cases ? for example (float)0.05 * (float)2179 = 108.950005 instead of 108.95 You ain't doing anything wrong, nor is Java. It's the other languages which are wrong. :-) As you may know, floating point maths is not exact. Many numbers, like 0.05 AND 2179, are impossible to represent exactly. The encoding of both numbers is very small, but multiplying scales the error. Differently from many other languages, Java defaults to a larger precision when formatting FP numbers, that's why sometimes you get an exact result in C++ or VB but a ugly thing terminating in 0.01 or .9 in Java. in some cases, an operation like x / ( 1/y) works. In some others (including this one) it doesn't. If you mean 0.05/(1/2179), the result should be "Infinity" and it's right, you are dividing by zero. Try 0.05 / (1.0 / 2179). Integer numbers are not promoted to floating-point types only because you're dividing. The margin error is always less than 0.1. Is it a cast problem, or is it worse. (By the way, the same thing happens also in javascript both in IE and Netscape). Yes, they are all correct! If you want more precision, use doubles. If you want total precision, use bigdecimals. Otherwise, live with that. And please don't ever apply equality operators (==, !=) to FP numbers; error propagation often make results just wrong enough to fail in exact equality tests. Use ,,=,= only. === To unsubscribe: mailto [EMAIL PROTECTED] with body: "signoff JSP-INTEREST". Some relevant FAQs on JSP/Servlets can be found at: http://java.sun.com/products/jsp/faq.html http://www.esperanto.org.nz/jsp/jspfaq.html http://www.jguru.com/jguru/faq/faqpage.jsp?name=JSP http://www.jguru.com/jguru/faq/faqpage.jsp?name=Servlets
Re: Tomcat-as-a-reference implementation?
From: "Scott Ferguson" [EMAIL PROTECTED] vendor-bias Tomcat isn't really a reference implementation. It's the Apache group's servlet implementation. Sun has chosen, for its own reasons, to select the Apache group as its preferred servlet vendor. Calling Tomcat a "reference implementation" is just marketing fluff. Orion is a better reference implementation than Tomcat in the sense of "if my implementation doesn't do the same thing, then it's probably wrong." Orion implements the specs more faithfully than Tomcat does. Unfortunately, this diminishes Sun's credibility as an impartial standards arbiter, but that's Sun's choice. Microsoft doesn't even pretend to be impartial with its ASP standard, and it's rather successful, so maybe it's not a bad decision. /vendor-bias This is very funny: if (Sun doesn't do real open source) Sun is evil; else // Sun does real open source Sun is evil; I agree that TomCat shouldn't be considered a reference implementation. Sun should give us: a) a good specification, b) a good compliance-checking tool, which would let us know which implementations are true to item 'a'. === To unsubscribe: mailto [EMAIL PROTECTED] with body: "signoff JSP-INTEREST". FAQs on JSP can be found at: http://java.sun.com/products/jsp/faq.html http://www.esperanto.org.nz/jsp/jspfaq.html
Re: ASP vs JSP
As opposed to Jason I generally feel safer drawing conclusions based on the assumption that Microsoft is in fact "quite that dumb" until proven otherwise. So my money would say that ASP is _not_ compiled to an executable state and cached in memory. I agree, and the evidence you expose is excellent. But I thought MS would at least be smart enough to convert the ASCII text to an intermediate (tokenized) form. Tips like "not using comments" mean they do everything (even parsing) each time. OTOH, it's not true that "jsp must always be interpretted from byte code". You're supposed to have a high-performance JVM (including a JIT compiler) in your server, ain't you? Evidence? Read some documentation on how to improve ASP performance. Take special note of statements such as: "Avoid using comments in ASP code." "Avoid using uneccessary server-side #include directives to include constants." "Group multiple Response.Write statements, and delimit them with one set of %% delimiters." "Use only one scripting language per page." These are factors that are only likely to slow down a compiler, not an interpreter. If ASP was only compiled once for each application start-up then these performance tips would make no sense. Furthermore, if ASP was compiled all the way to native code and run in process then it's performance would almost certainly outstrip that of JSP comfortably (as jsp must always be interpretted from byte code). However my experience shows that JSP is around 50% faster than ASP for identical (functionally) scripts. Of course the much nicer tiered architectures that you can easily put together with JSP/EJB increases performance by another magnitude altogether. Haven't seen ASP3 running on IIS5 yet, but MS better hope it's foundations aren't "quite that dumb". Dave Elliot [EMAIL PROTECTED] -Original Message- From: Jason Boehle [mailto:[EMAIL PROTECTED]] Sent: Saturday, February 12, 2000 2:19 PM To: [EMAIL PROTECTED] Subject: Re: ASP vs JSP ASP scripts get interpretted everytime a user requests the .asp page. Ummm, do you really think the people developing the ASP engine at MS are quite that dumb? A compiled ASP page is cached in memory, and I'm sure THAT is why speed is comparable to JSP. Jason Boehle [EMAIL PROTECTED] == = To unsubscribe: mailto [EMAIL PROTECTED] with body: "signoff JSP-INTEREST". FAQs on JSP can be found at: http://java.sun.com/products/jsp/faq.html http://www.esperanto.org.nz/jsp/jspfaq.html === To unsubscribe: mailto [EMAIL PROTECTED] with body: "signoff JSP-INTEREST". FAQs on JSP can be found at: http://java.sun.com/products/jsp/faq.html http://www.esperanto.org.nz/jsp/jspfaq.html === To unsubscribe: mailto [EMAIL PROTECTED] with body: "signoff JSP-INTEREST". FAQs on JSP can be found at: http://java.sun.com/products/jsp/faq.html http://www.esperanto.org.nz/jsp/jspfaq.html
Re: JRUN-MS Access connection question
From: "arthur alexander" [EMAIL PROTECTED] SUN want's to divest Microsoft of any ownership or even participation in the JAVA bandwagon, and to crush it's competitor M$ (as it is often abbreviated by anit-MS bigots). Why would they want to promote the use of free ODBC drivers when they and their partners can get more $UN dollars out of you by promoting the alternative drivers. An obvious soltion for this problem would be an open-source JdbcOdbc bridge. Or we could get the sources of Sun's driver, improve it and have the result in the next JDK, but the SCSL has yet to be accepted by most of the OSS community. As an example, why is it that SUN has done so much work providing good CORBA integration into the JAVA environment, and not a single API initiative to support bridging the COM based interfaces to JAVA? Many will counter with " CORBA is an open source API, and COM is not ". That is a truly false argument, and a red-herring. While it is technically correct on the face, it does not address the real motives at work behind the sceens. The COM interface APIs are widely documented, and even the network protocol for Distributed COM is in the public domain. SUN could easily provide an API to support a bridge to COM, but that would only foster the use of COM, and that is not what SUN makes money on. In fact, the worse MS does in the market the more opportunity there is for SUN to advance it's more costly solutions to the same problem. Have you ever priced the market average for a complete CORBA infrastructure? Thousands of dollars and more complex Servers and technology to support, with the requisite increase in support personell and skills. Now why would anyone opt for that when COM is free, and is already used by more than 70% of those companies that have begun to use JAVA? It is nearly impossible to make a case for it on the basis of ROI, unless you take into account the volume use of the technology, the so called Scalability factor. There are free, open-source implementations of CORBA orbs. You only need a commercial ORB if you really need its advantages like cute admin tools, superior performance or robustness (and I say that as an ORB reseller). Actually, the basic ORB product is rapidly being commoditized; vendors will make money in services and application servers. There is a significant synergy between teh Java and CORBA worlds. They are a great match for many reasons, and OMG follows Java as much as Sun follows CORBA today. The same is not true for Java/COM, and I can see no technical reason to include COM support in Java (only the practical reason of supporting a popular technology). Finally, a Java/CORBA program wll be WORA while a Java/COM program will not -- although COM has been ported to non-Windows platforms, these ports are outdated, incomplete (for server side) and expensive, and basically nobody uses them, so COM is "de facto" non-multiplatform. I support entirely Sun's position of not including as a standard Java feature any support for a single-platform technology. Of course this is sometimes posible, when the technology in question is masked by a neutral API (e.g. Java3D supporting Direct3D)... we could have a JNDI provider supporting Microsoft's new directory services and things like that. If Microsoft produced a JavaCOM API that would run on any compliant JVM, then I think Sun should make this available as an extension. But when Microsoft produced COM libraries that work only on Win32, and particularly, only on Microsoft's own JVM, Microsoft lost any moral rights to ask Sun to support COM. A+ Osvaldo === To unsubscribe: mailto [EMAIL PROTECTED] with body: "signoff JSP-INTEREST". FAQs on JSP can be found at: http://java.sun.com/products/jsp/faq.html http://www.esperanto.org.nz/jsp/jspfaq.html
Re: Check this
Do not open this file !!! Tuan is a fucker man !!! I'd rather say he's dumb enough to open executable attachments in anonymous emails... I guess the listserver could just reject ALL attachments, considering that 99% of us hate attachments of ANY kind in public lists (including vCards, zipfiles, HTML, JPGs from porn spammers - I hate 'em all!!). Tuan muon gi, loai lo dich ? -Message d'origine- De : tuan tran [EMAIL PROTECTED] À : [EMAIL PROTECTED] [EMAIL PROTECTED] Date : jeudi 6 janvier 2000 10:37 Objet : Check this Have fun with these links. Bye. === To unsubscribe: mailto [EMAIL PROTECTED] with body: "signoff JSP-INTEREST". FAQs on JSP can be found at: http://java.sun.com/products/jsp/faq.html http://www.esperanto.org.nz/jsp/jspfaq.html === To unsubscribe: mailto [EMAIL PROTECTED] with body: "signoff JSP-INTEREST". FAQs on JSP can be found at: http://java.sun.com/products/jsp/faq.html http://www.esperanto.org.nz/jsp/jspfaq.html
Re: How to pre-compile jsp pages under JRUN and JSWDK/TOMCAT
Hi Lam, It seems this is the purpose of TomCat's isWorkDirPersistent configuration (check out your SERVER.XML). If you set this flag to "true" for a particular context, TomCat will keep the generated servlets and reuse them if you shutdown/restart TomCat. You could visit all pages in your development site and zip the work directory and distribute it. Unfortunately, this option causes the JVM (1.2.2 and 1.3.0beta, Win32) to crash. I have just filed a bug report. Maybe other versions (JSWDK? JDK 1.2.0/1.2.1?) will work? - Original Message - From: "Lam, Kelvin" [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Tuesday, January 04, 2000 4:16 PM Subject: Re: How to pre-compile jsp pages under JRUN and JSWDK/TOMCAT For the benefit of this list, I got 2 replies on this question: 1. Switch to another JSP engine: To try GNUJSP compiler. jsp -- java -- class (I don't really know what it means but I thought all JSP will go thru this steps, but since I am not using GNUJSP, it does not apply to me anyway.) 2. Use a faster java compiler: Not sure what platform you're using, but I'm using the IBM Jikes compiler on RedHat 6.1 and it flies! I've also tested the Symantec compiler - sj.exe - on NT and it is much faster than javac. Also, if you're using NT and happen to have a copy of the MS vm, you can always jvc.exe, which is very fast too. (None seems to suggest that it is possible to "pre-compile" all my JSP pages. So I guess I am out of luck. Thanks anyway. By the way, I am on NT platform. But my problem should apply to any platform, ie. how can you "pre-load" the web application and eliminate the .jsp to .class step and provide a more consistant response time on jsp page request.) -Kelvin -- From: Lam, Kelvin[SMTP:[EMAIL PROTECTED]] Reply To: Lam, Kelvin Sent: Sunday, January 02, 2000 11:47 AM To: [EMAIL PROTECTED] Subject: How to pre-compile jsp pages under JRUN and JSWDK/TOMCAT Anyone knows how you can "pre-compile" all your JSP pages under JRUN or JSWDK or Tomcat? I would like to eliminate the long (relatively) delay on the first time access to the jsp pages. (I know, I know, you can always visit every pages personally, but it is getting tiresome after awhile...) Can it be done? Thanks. -Kelvin == = To unsubscribe: mailto [EMAIL PROTECTED] with body: "signoff JSP-INTEREST". FAQs on JSP can be found at: http://java.sun.com/products/jsp/faq.html http://www.esperanto.org.nz/jsp/jspfaq.html === To unsubscribe: mailto [EMAIL PROTECTED] with body: "signoff JSP-INTEREST". FAQs on JSP can be found at: http://java.sun.com/products/jsp/faq.html http://www.esperanto.org.nz/jsp/jspfaq.html === To unsubscribe: mailto [EMAIL PROTECTED] with body: "signoff JSP-INTEREST". FAQs on JSP can be found at: http://java.sun.com/products/jsp/faq.html http://www.esperanto.org.nz/jsp/jspfaq.html
Re: A Basic doubt !
Yes, you can get JServ from the Apache group. - Original Message - From: "Parshwanath" [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Thursday, December 30, 1999 10:03 AM Subject: A Basic doubt ! Hi, If I want to use apache [I have been using IIS JRUN before] do I need some jsp/servlet engine [like jrun] to run my jsps ? Thankx for all the replies. :-)Parshwanath === To unsubscribe: mailto [EMAIL PROTECTED] with body: "signoff JSP-INTEREST". FAQs on JSP can be found at: http://java.sun.com/products/jsp/faq.html http://www.esperanto.org.nz/jsp/jspfaq.html === To unsubscribe: mailto [EMAIL PROTECTED] with body: "signoff JSP-INTEREST". FAQs on JSP can be found at: http://java.sun.com/products/jsp/faq.html http://www.esperanto.org.nz/jsp/jspfaq.html
