|
| |
| | Inside Java : The Java Virtual Machine |
 | | It is the responsibility of the JVM to handle these translations, so that the operating system and CPU architecture on which Java software is running is completely irrelevant to the developer. | | | The thread scheduling algorithms are different between one JVM and another (based in part on the underlying operating system), so that it is impossible to accurately predict when one thread will be executed over another. | | | For example, garbage collection algorithms vary between one JVM and another, so it becomes impossible to know exactly when memory will be reclaimed. |
|
http://www.javacoffeebreak.com/articles/inside_java/insidejava-jan99.html
(604 words)
|
|
| |
| | JVM : Java Glossary |
| | JVM also refers to the platform-specific program that can interpret JVM byte codes and execute them. | | | On it are class objects, hunks of code (either in byte code format or natively compiled), ordinary objects and thread stacks. | | | The multi-platform universal *.class files are the machine code for such an ideal machine due out in 1997. |
|
http://mindprod.com/jgloss/jvm.html
(782 words)
|
|
| |
| | The lean, mean, virtual machine |
| | Thanks to the JVM, programs written in Java don't have to be rewritten to run on different computers. | | | The JVM is "virtual" because it is generally implemented in software on top of a "real" hardware platform and operating system. | | | The JVM is lean because it is small when implemented in software. |
|
http://www.javaworld.com/javaworld/jw-06-1996/jw-06-vm.html
(976 words)
|
|
| |
| | JVM |
| | The Java platform is probably one of the first of a new breed of machines: virtual computers that will only very infrequently be programmed, at the assembler level, by humans. | | | The runnable Java files have to have the class files format and this is very strict and complex and moreover the class files are in binary format and so they are difficult to understand directly. | | | As the use of the Java language and virtual machines proliferates beyond the sphere of applets into the space of server programs, developers are requiring better performance, availability, and transactional and scalability features. |
|
http://www.javaolympus.com/J2SE/JVM/JVM.jsp
(1844 words)
|
|
| |
| | Java theory and practice: Garbage collection in the HotSpot JVM |
| | The JVM maintains a card map, with one bit (or byte, in some implementations) corresponding to each card in the heap. | | | In the paper "A fast write barrier for generational garbage collectors", Urs Hoeltze covers both the classical card-marking algorithm and an improvement that can reduce the cost of marking significantly by slighly increasing the cost of scanning dirty cards at collection time. | | | Conversely, mark-compact does quite well with long-lived objects (copying them only once), but not so well with many short-lived objects. |
|
http://www-106.ibm.com/developerworks/java/library/j-jtp11253
(2856 words)
|
|
| |
| | performance: Tuning JVM switches for performance |
| | By telling the JVM how much memory it should initially allocate for the heap, we save it growing the heap as NetBeans consumes more memory. | | | Listed below are some additional JVM switches which have either anecdotally or measurably impacted NetBeans performance on some, not all, systems. | | | The switches discussed on this page are available on Sun Microsystems J2SE 1.5.0 - users of other JVM implementations may need to remove these switches in order to run NetBeans. |
|
http://performance.netbeans.org/howto/jvmswitches
(918 words)
|
|
| |
| | Languages for the Java VM |
| | Jamaica, the JVM Macro Assembler, is an assembly language for JVM bytecode programming. | | | Is use the JVM and make available the Java classes to the JSelf environment. | | | The JMatch language extends Java with support for abstract iterable pattern matching: a mechanism for pattern matching that is compatible with the data abstraction features of Java and also makes iteration abstractions convenient to use and to implement. |
|
http://flp.cs.tu-berlin.de/~tolk/vmlanguages.html
(10412 words)
|
|
| |
| | Pick up performance with generational garbage collection |
| | The HotSpot JVM uses a two-machine-word object header, rather than the three-word header found in most other JVMs. | | | The next release of HotSpot JVM, version 1.4, will attempt continuous, pauseless GC that will probably be a variation of the incremental algorithm. | | | Using the copy algorithm, the JVM reclaims most objects in the new generation object space (also known as eden) simply by making small scavenges -- a Java term for collecting and removing refuse. |
|
http://www.javaworld.com/javaworld/jw-01-2002/jw-0111-hotspotgc.html
(1628 words)
|
|
| |
| | JVM Notes |
| | The JVM implements objects in a heap, which is memory that the JVM, not the programmer, manages. | | | While the JVM has special instructions to access arrays, the concepts involved are similar to other architecutures. | | | This is where, in real architectures, you use a debugger so that you can execute one machine instruction at a time and examine the results. |
|
http://www.csam.montclair.edu/~bredlau/jasmin/JVM.html
(3976 words)
|
|
| |
| | House of Kidz: The Game |
| | For Windows, a Pentium-class computer with 32 MB of RAM should be sufficient. | | | Obviously, the faster the computer (and more importantly, the more memory it has), the faster the game will run. | | | For Windows machines, we recommend using the Microsoft JVM even if you hate Microsoft -- it's considerably faster than other implementations. |
|
http://cc600.com/kidz
(696 words)
|
|
| |
| | Configuring and Using Apache JServ |
| | Each JVM is executed within its own process space and can be run with a unique user ID, thus allowing the use of operating-system level file and process protections. | | | The drawback is that each JVM may require significant memory and processor resources, which can be a factor in deciding how many JVMs to allow and what hardware to purchase. | | | You can also offload the work of running the JVM to other computers. |
|
http://www.magiccookie.com/computers/apache-jserv
(11752 words)
|
|
| |
| | EETimes.com - Synthesis route starts with instructions |
| | Speed optimization of the JVM tends to introduce parallelism that manifests as register-style implementations of instructions. | | | Using the CaffeineMark 3.0 Java benchmark, the FIP-based JVM at 33 MHz runs twice as fast as the Pentium, and a FIP with a deeper pipeline is estimated to be seven times faster. | | | The evolution of the three versions of the JVM demonstrates trade-offs between the possible parameterizations. |
|
http://www.eetimes.com/story/OEG20010216S0026
(1624 words)
|
|
| |
| | Open JVM Integration (OJI) |
| | The Open JVM Plug-in API depends on the XPCOM object model which is described in Extending Mozilla. | | | The Open JVM Integration project (OJI) is working to extend the browser to allow Java virtual machines to be plugged into Mozilla. | | | Currently we're working with JavaSoft, Apple and others to make their Java plug-ins be more full featured replacements to the Netscape JVM. |
|
http://www.mozilla.org/oji
(724 words)
|
|
| |
| | Squawks of the Parrot: (PerlpythonRuby) on (.NETJVM) |
| | We'd essentially write all the functionality of the interpreter and target the JVM the way we do now with C and hardware CPUs, including complete stack management, completely ignoring any features at all of the VMs. | | | But, like the Infocom Z machine, which is also turing complete, the issue is one of speed. | | | To do that with.NET or the JVM would require a custom type capable of doing what perl needs. |
|
http://www.sidhe.org/~dan/blog/archives/000151.html
(1741 words)
|
|
| |
| | Amazon.com: Books: Java Virtual Machine (Java Series) |
| | I know of only one book that covers the JVM and the binary codes, the classfile format etc. It is known as the goldfish bowl book because of its cover, but is officially called The Java Virtual Machine. | | | But by far the worst problem of this book is that it covers only the very first version of the JVM and the Java language. | | | One special "thank you" is for "Appendix A" where all JVM instructions are nicely listed by the function group. |
|
http://www.amazon.com/exec/obidos/tg/detail/-/1565921941?v=glance
(1728 words)
|
|
| |
| | JVM - Glossary - CNET.com |
| | A JVM acts as an interpreter between the Java bytecode and a computer's operating system. | | | Using a JVM, you can run Java code on any number of different computer platforms, including Macintosh, Windows 95, and Unix. | | | JVMs read and execute Java statements one at a time, however, so they are often slower than a just-in-time compiler. |
|
http://www.cnet.com/Resources/Info/Glossary/Terms/jvm.html
(56 words)
|
|
| |
| | Huge Security Hole in Solaris and JVM |
| | I wonder how Gosling feels about Solaris and the JVM, both of which support execution of C and C++ code (the latter through JNI, the former as the default way lots of UNIX heads (including me) learned to write UNIX code). | | | I reading a system whom claim to be stable is the lowest level programming model where mistake cant be made. | | | This functionality is not needed in today's Mono as currently Mono is being used to run fully trusted applications, and we are not using it on embedded scenarios where assemblies would have different trust levels." |
|
http://pluralsight.com/blogs/dbox/archive/2005/02/06/5596.aspx
(4502 words)
|
|
| |
| | Defensive Java Virtual Machine Announcement |
| | The result can serve as the basis for rigorous, formal analysis of the JVM and JVM (bytecode) programs. | | | This snapshot demonstrates one approach to formalizing and clarifying the JVM specification. | | | Over the last several months Computational Logic, Inc. (CLI) in collaboration with Schlumberger Electronic Transactions and JavaSoft (see "Where is JavaSoft going with its model" in the original Javasoft announcement) has been building a formal model of a subset of the Java Virtual Machine (JVM). |
|
http://www.computationallogic.com/software/djvm
(388 words)
|
|
| |
| | Have you tuned your JVM on ColdFusion MX yet? |
| | They are JVM errors as the logs state, relating to memory. | | | For memory settings make sure you Max heap is big enough, also set the initial heap size to be equal to the max heap size, this way all memory is allocate when the server starts up, rather than when it needs it (during a request, allocating memory is slow). | | | I just recently went to new york to help a client solve problems related to the dreaded Java.lang.OutOfMemory error which is in large part to lack of good degault settings in the Jrun.xml for the scheduler (and somewhat for the proxy) service. |
|
http://www.petefreitag.com/item/89.cfm
(835 words)
|
|
| |
| | Are scripting languages threatening Java? |
| | One of the problems with the 'use the right tool' principle has been wasted code: a powerful library built in one language that is considered the right tool for one task can only be used with difficulty in another language when that is the chosen tool. | | | Instead of having to wait for various independent VM and JIT projects in the open-source world, scripting languages on the JVM can become reasonably high-performance development tools right now. |
|
http://www.theserverside.com/news/thread.tss?thread_id=32754
(5841 words)
|
|
| |
| | Production First Software Encyclopedia of Typography and Electronic Communication : J |
| | A JVM was included with all versions of Windows starting with Win95 until, in mid-2001, Microsoft announced that a JVM would no longer be included starting with WindowsXP. | | | Java support with Windows XP (and higher) and Internet Explorer 6.x and higher can only be achieved by downloading a JVM for Windows and a plug-in for Internet Explorer and then installing them. | | | These actions by Microsoft are no surprise, since Java has been the single biggest threat thus far to the Microsoft operating system monopoly. |
|
http://ourworld.compuserve.com/homepages/profirst/j.htm
(1423 words)
|
|
| |
| | RealApplets.com - Help |
| | With the diagnostic applet below, you should be able to identify the problem why Java does not work correctly on your machine. | | | Java version NOT complete: Your browser's JVM is incomplete. | | | Java version up to date and complete: No JVM problems where detected. |
|
http://www.realapplets.com/help_java.asp
(737 words)
|
|
| |
| | Windows XP Common Issues > Java Support in Windows XP |
| | If you are running an older version of the JVM you may need to upgrade to version 3809 or 3810 (windows update) before the above command will work. | | | You will then be asked if you really want to remove the virtual machine and then reboot. | | | If the following information is returned there is a copy of the Microsoft JVM installed, the version of which is the last 4 numbers on the ' |
|
http://www.mvps.org/marksxp/WindowsXP/java.php
(823 words)
|
|
| |
| | How can I uninstall the Microsoft Java Virtual Machine (JVM) from Windows XP? |
| | Installed 1.4.1_02 SUN JVM and enabled for Netscape and Latest version of IE. | | | You might want to remove the Microsoft JVM, which Microsoft no longer supports, in favor of the more recent Sun Microsystems JVM. | | | The information in #38206 looks like it might have been helpful - if only the popup ad wasn't plastered over the command text line I need. |
|
http://windowsitpro.com/Articles/Index.cfm?ArticleID=38206&DisplayTab=Article
(920 words)
|
|
| |
| | Overview of Java programming resources |
| | standalone JVMs - mostly research projects that rely on an external class library implementations | | | Java virtual machines (JVM), development kits (JDK) and runtime environments (JRE) | | | Java class file optimization and compression - tools and techniques to reduce the size of Java class files |
|
http://schmidt.devlib.org/java
(371 words)
|
|
| |
| | Java Virtual Machine - All about JVMs |
| | Java-Virtual-Machine.net is a power-packed site with everything you could possibly want to know about the JVM. | | | An overview of Java virtual machines (JVMs), Java development kits (JDKs), Java runtime environments (JREs) and related products. | | | Also covered in the FAQ are solutions to the all-time favorite question of "why can't I see java applets?" |
|
http://java-virtual-machine.net
(167 words)
|
|
| |
| | Liberated Games |
| | At the very least, I have been given permission to redistribute the data file in unaltered form should the official download ever disappear. | | | As expected, id Software has released the source code to Quake III: Arena under the GPL. | | | Another Commodore 64 Game Liberated by Codemasters by jvm 2005-01-21 |
|
http://www.liberatedgames.com
(5288 words)
|
|
| |
| | developerWorks : Java : IBM developer kits : Overview |
| | We have now added a new level of the iKeyman User guide and a JAR file containing the IBM JCE FIPS provider cryptographic module that is certified at Federal Information Processing Standards (FIPS) 140-2 [Level 1]. | | | We have comprehensive IBM JVM Diagnostics Guides relating to IBM's various Java 2 Standard Edition SDKs. | | | We have now added a Garbage Collection and Storage Allocation Techniques paper that may prove helpful in tuning performance. |
|
http://www-128.ibm.com/developerworks/java/jdk
(471 words)
|
|
| |
| | Download Java Virtual Machine (Build 3810) |
| | This download fixes known security issues with Microsoft Java Virtual Machine (JVM) and can be applied to Windows 95, 98, Me, NT or XP (but not Windows 2000). | | | Depending on your current version of Microsoft Virtual Machine, there will be many other important fixes. | | | Please note that even though JVM was not included with the original release of XP, it is now part of Windows XP SP1. |
|
http://www.softwarepatch.com/windows/javavm.html
(277 words)
|
|
| |
| | Nu Cardboard: Gosling on JVM Scripting |
| | The author says that he'll wait until version 1.0 (currently at 0.9.9) to publicize the language. | | | Since Jython doesn’t have a Java-like syntax, Java programmers tend to dismiss it, and CPython programmers tend to avoid Jython because they need to learn Java and the Java libraries to get the benefit of running on the JVM. | | | The big two JVM scripting languages are Jython, an implementation of Python for the JVM, and Groovy, a completely new, JVM specific language. |
|
http://cardboard.nu/blog/2005_02_02/gosling_on_jvm_scripting.html
(1679 words)
|
|
| |
| | AppPerfect Java, J2EE and JVM Profiler |
| | A JVM's performance depends heavily on the underlying system's resources such as CPU usage, memory usage, network usage and disk I/O available to it. | | | AppPerfect J2EE/JVM Profiler provides you a unified view of all these resources to help you understand your JVM's performance characteristics and take appropriate corrective actions when issues arise. |
|
http://www.appperfect.com/products/devsuite/jp.html
(442 words)
|
|
| |
| | kissme - A free Java Virtual Machine |
| | This is a mechanism in which the JVM transparently migrates Java data structures between memory and a persistent store. | | | kissme is Java Virtual Machine (JVM) freely available under the GPL. | | | It is currently still under development but can run many console java applications. |
|
http://kissme.sourceforge.net
(304 words)
|
|
| |
| | CTO : JVM |
| | is a free implementation of the JVM by the GNU project. | | | The infamous Java Virtual Machine (JVM) is a concrete VM introduced by Sun as a standard compact (so they say) low-level representation for programs written in Java. | | | CTO pages can be modified by anyone at anytime. |
|
http://cliki.tunes.org/JVM
(156 words)
|
|
| |
| | IE JVM Selector Utility |
| | The hta application first queries the registry to determine if the JVM used by IE can be switched to the Sun JVM. | | | The IE JVM Selector is a simple utility hta (html application) that facilitates quickly changing the default Java Virtual Machine (JVM) that Internet Explorer (IE) uses when the applet tag is specified in a web page. | | | The utility also displays the current version of the MS JVM installed. |
|
http://www.jensign.com/JavaScience/SelectIEJVM
(100 words)
|
|
| |
| | jvm Internet Resources |
| | Analyzing Heap Error Behavior in Embedded JVM Environments | | | Provides a high-level description, together with a mathematical and an experimental analysis, of Java and of the Java Virtual Machine (JVM), including a standard compiler of Java programs to JVM code and the security critical bytecode verifier component of the JVM. | | | Recent studies have shown that transient hardware errors caused by external factors such as alpha particles and cosmic ray strikes can be responsible for a large percentage of system down-time. |
|
http://www.eeglossary.com/jvm.htm
(655 words)
|
|
| |
| | Java Virtual Machine - Online Instruction Reference |
| | You can also see Jasmin Home Page for further information on Jasmin and the JVM. | | | See book details for further information on this book. | | | The material presented here probably has some typos and minor errors, but we felt that it would still be a useful reference source for people looking for details of the JVM. |
|
http://mrl.nyu.edu/~meyer/jvmref/ref-Java.html
(185 words)
|
|
| |
| | e-clips: JVM |
| | Green Hills Software and aicas Announce INTEGRITY RTOS Integration with the JamaicaVM | | | Green Hills Software, Inc., the technology leader in embedded software development tools and royalty-free realtime operating systems, and aicas, provider of Java technology for realtime and safety critical embedded applications, announced today the availability of aicas' JamaicaVM realtime Java Virtual Machine (JVM) for Green Hills Software’s INTEGRITY RTOS. | | | MEDC 2005 offers attendees the opportunity to learn how to build and bring to market devices and applications — and access to the latest code, hands-on labs, technical breakout sessions, and much more. |
|
http://www.eg3.com/eclips/html/2005-03-14/software_jvm_blank.html
(283 words)
|
|
| |
| | Web Hosting - JSP JAVA Servlet Tomcat J2EE JBOSS - Best host |
| | - Compare JSP or Java Server Pages web hosting packages that use shared JVM and Tomcat v4.1.31. | | | - Our Java hosting packages with private JVM and Tomcat 5.0.28 are ideal for businesses websites. | | | - MySQL v4.0.20 and PostgreSQL v7.3.4 databases available with every JVM database hosting plan. |
|
http://www.jspzone.net
(291 words)
|
|
| |
| | The Microsoft JVM |
| | We do not expect to maintain support for the Microsoft version in the future. | | | This action mainly impacts new releases from Microsoft, which will not have the Java VM available as part of that package, so customers must download and install the Microsoft Java VM separately. | | | Meetingworks strongly recommends that you download and install the Sun JVM as an alternative to the Microsoft Java implementation. |
|
http://www.entsol.com/html/the_microsoft_jvm.html
(213 words)
|
|
| |
| | TINI main page |
| | TINI (for TIny Network Interface) is a complete TCP/IP node with a Java JVM all on a $50 SIMM module. | | | The Systronix TINI Engineering Platform (STEP) is a 100x160 mm development and prototyping board. | | | TINI includes Flash, NVRAM, ethernet, RS232, CAN and iButton, plus a Java JVM, all on board. |
|
http://www.systronix.com/tini/tini.htm
(154 words)
|
|
| |
| | Welcome to NSIcom |
| | AppGate add more supported mobile devices with CrEme. | | | jbed JVM for PocketPC JVM for Pocket PC JVM for windowsCE JVM for windows CE JVM for windows Mobile | | | Unable to choose between J2ME/MIDP applications and WinCE ERP/CRM applications? |
|
http://www.nsicom.com
(150 words)
|
|
| |
| | The Swing Connection |
| | Click here to see a list of updates to the Swing tutorial. | | | Swing Sightings #15 has finally hit the street! | | | A JDC Chat with the Swing, Plugin, and JVM Teams |
|
http://java.sun.com/products/jfc/tsc
(3075 words)
|
|
|
