---
title: WWDC2000 Session 180
framework: wwdc
role: article
path: wwdc/wwdc2000-180
---

# WWDC2000 Session 180

## Transcript

Kind: captions Language: en well good afternoon actually I am NOT Stephen era for those of you know me and for those of you don't I'm Alex Samuels the Java technology manager in apple worldwide developers so i think i'm in a in a very good mood today you guys probably all know why I actually get to stand up here and hopefully tell you what you want to hear I'm one of those people who's probably gotten a lot of emails from you in the crowd asked me when we can have Java too and for the first time we're really able to go out publicly and as you saw today in the keynote give you what you want and talk to you a little bit about what we're doing with Java too and before I before I bring up Steve I just want to go ahead and put a general thank you out to all the engineers that work on on job at apple I think these guys have basically gone got a long way we've come from a situation where you could say in the mr jail and maybe maybe we weren't doing as good as we'd like to be and I think we're in a prime position to be a leader in a Java platform and I think today's the day we start to tell you all the information that you need to make that happen so I want to give a little hand to entire Java team you guys make my job a lot easier so with that I'm going to go ahead and turn it over to Steve and Steve was a lot of really really good news to share with you today so I'll let him bear that hi there hmm it's a pretty bright how many folks I want to take a quick poll how many folks were here last year quite a few at the Java talk not only wdc okay great so you know where we've come from so I won't won't belabor it too much but as Alan said on the team has really come together not only the engineering team but the developer support team Alan and his folks that helped a lot of you guys before we get a chance to to help a lot of you guys so um I think all across the company we pulled together and made Java actually pretty relevant in the Apple community and I think it just going to get better and better you saw in the keynote that we're going to be offering Java to on Mac OS 10 it's a great fit the mac OS 10 platform is great foundation for for java a lot of the modern components of the operating system are our components that the java really depends on like the pre-emptive multitasking protected memory all that good stuff you heard a lot of features in bertrand stock i'm sure i think most of you attended that and java was developed on unix in a modern operating system so again it benefits us as we move the technology forward to be on a modern operating system and have modern underpinnings the the Java that we're going to be shipping is Java to standard edition later on I'll talk a little bit more about what that means the swing you I toolkits built into the standard edition if you aren't aware that swing is the modern GUI tool kit that people used to write java applications awt was a smaller UI toolkit that was used for primarily for applets on the to coexist right now in the Java to standard edition and we've done a lot to integrate with aqua the demo that you saw on stage with web objects that you I was a swing application it was a pure java swing java to standard edition application and it wasn't Coco for instance that user interface work was done by a very talented person we have working on our staff from son named LeeAnn rocker and I know she worked really hard with the web objects team to get that demo together and Lassen definitely not least we have the hotspot client vm this is an extremely robust vm that in many cases is the second or third generation technology the garbage collection technology and it is state-of-the-art the compiler in it state-of-the-art and we'll go through some numbers later but on the team Yvonne posa Jim Lasky are our two leads on that project just incredible results with the hot spot technology you know it was it was the type of decision that we were contemplating last year I think we talked about that we were disappointed that we couldn't tell you that we were going to commit to it and that's because we didn't know last year and it's amazing how well all that technology has worked out for us so now we'll go through a brief timeline in February and 99 right before last year's WWDC we shift mrj 2.1 GM and that was the first release I think the teen of Java that I think the team felt proud of it we felt proud of it because it perform fairly well what didn't exceed our expectations but I think met our expectations in many ways but more importantly it ran a lot of applications okay and that's something that mr j 20 was not doing it was not running a lot of applications it was crashing and it was dying and it just wasn't the type of robust platform that we all wanted so to one was a real breakthrough for us I think it's delivered on the strategy we outlined in 98 and it's interesting because when I stood up here in 98 I was trying to think how could I put in perspective for you guys I felt about four feet tall when I stood up here in 98 and last year I felt 57 which is actually what I am and because we delivered on a strategy we still weren't happy with where we were but we knew where we were going this year I feel seven feet tall and you can tell I'm not size would be tall but I feel that way and I feel that way because again I'm standing on the shoulders of some really great people that they get fun to come to work in every day frankly not a part of the strategy we delivered on is we wanted to give you incremental releases the six incremental buzz and solve incremental performance problems so we did a release in March may in July and that was another promise that I think we've done a good job delivering on or keeping was that we didn't want to go dark for nine months and that was a problem before that we would just wait too long before we show incremental progress so I thank the team for working hard on those incremental releases and those are driven by emails bugs customer requests I really feel if we do a pretty good job trying to prioritize what we're hearing from you and building into the product if not you need to get a hold of our if there are features that you've requested or bugs that you haven't seen fix throughout the dot releases that we've released you just need to get a hold of Allen or a developer support team and make sure that feedback gets back to us so along with the two dot one dot 3 we we shift to two alpha and 214 was the last of our 21 based releases and the milestone there was we met Oracle bronze certification we've been working really closely with Oracle because they're a very heavy Java user and they want to make sure their applications run really great on our platform so we again we're closer with them to make that happen so in October we release defeat to that was our first Java to base vm so that's one even though we made no public statements about where we're going with Java to folks looked under the covers and started figuring it out for themselves and we did a 2 2 beta and then in January we'd when GM with you 2222 was our for lack of a better term I e50 release we did fix bugs outside I you 50 but it really was targeted at giving the eat the user or developer a better experience within the scope of I you 50 and then we did on dp3 which added the classes it was our first release there was still a lot of bugs in it and here we're doing at DP for and the big addition is the hot spot client so and many many bug fixes to the Java classes which we released in deep in vp3 so that's been the progression it's been a lot of work we actually combined our Java to mr j team with our mac-10 java team so now we're one java team and I think the productivity enhancements we've gotten from even making that change has been pretty dramatic so again I'm thrilled with the last year I think a lot of people working on the team look back and are probably startled with how much we act accomplished so before I go into the crux of the talk which is centered around mac-10 I'd like to briefly go over are currently shipping product it's mr j 22 i believe the latest version minor version is mr j 221 and it integrates with the iu 5 networking stack cabinet file support cookies with Lord application all these features you're probably aware of if you've been using the product how many people are using 22 right now ok so you're familiar with it so I am we add a long file names of floor so that's our Mac nine product and we're going to continue to enhance it along the 118 code base and now I'd like to go into the the crux of the talk which centers around a three mug strategy cutesy it so we have performance compatibility that is we want to make sure we're compatible with all the existing Java code out there and integration and I'm going to take each of these three separately it's clear that almost everything we do actually fits into one of these and I think the first one that's interesting to look at is performance so we'll start from the top so expect a vm 98 is the benchmark we're currently using you might remember in previous years we were using caffeine marks we decided along with a lot of other folks in the industry that caffeine marks are not a great measure of performance so we decided to look for a benchmark which would meet our needs and in fact came up with spec jvm 98 benchmark these performance numbers i'm going to show you are for DP for just to be clear the numbers you're seeing here are not seconds they're a score so it's a score that respect JVM benchmark gives you and higher is better as you might imagine and right here we have the are which is basically the interpreter running without the compiler so the classic java virtual machine prior to hotspot was running at 1.8 the interpreted hotspot runs a 2.6 which is roughly a fifty percent increase and you can see the green is the compiler the compiler in both cases runs roughly 10 times faster than the interpreted code but what's much more important and compelling than the fifty percent boost we get is the amazing reduction in memory amazing reduction in memory so [Applause] taking pages off disk is very costly and it's clear that even though we've upgraded I think most Mac ship with 64 megabytes now it's asking people to have upwards to 128 and 256 megabytes is not appropriate so we want to find ways to make Java programs run in a sensible footprint so what this graph tells you is it only costs seven megabytes to run compile this benchmark in compiled mode and that seven megabytes not only includes the compiled data data structures but it includes the data structures for the compiler itself to do its job and you know it's going to be I think roughly 40 60 50-50 split but in any event from my perspective that's a reasonable price to pay for compilation and if you do the math it's 4.5 times smaller and we've seen this translate into not only our benchmarks but all the applications we're running use far less memory than they used to so we're extremely excited about this it's only dp4 we still have a lot of tweaking to do but we still feel fairly confident that we're heading in the right direction the the thing that just briefly about adaptive compilation technology the reason it's so much less is in the semantic JIT world where you do where you're running in a class a virtual machine what the compiler tries to do is compile everything that's it it's goin life to try and make everything that and what happens with a hot spotted active adaptive technology is it measures itself and as the programs running it tries hard to only compile the things that matter and not compile the things that don't matter right so an obvious example of something that doesn't matter is an initialized method but there are obviously lots of other methods that are we used once twice maybe used a lot for let's say printing but then printing it's locked out and you don't need it anymore so the hotspot adaptive compilation system is always measuring to make sure that it's compiling the right stuff and stuck JVM is measuring it's a basically a suite of applications I think it's six altogether database the Java compiler I think our Java compilers two to three times faster now as a result of hotspot there's a compiler compiler for Purdue in there is data compression and expert system shell and MPEG audio decompression think you see these are applications that most of you have probably heard of certainly you know java the java compiler you've heard of database you've heard of compiler compilers data compression all this stuff is stuff that benefits real world applications that are being used out in the java community so what do we have left hotspot tuning this is our first release even though we're happy we still have a ways to go graphics tuning especially awt there's still some issues with how we integrate with courts and the windowing system that we need to resolve before we're really happy with our awt graphics performance we're fairly happy with the swing performance and you'll see a demo later that I think will will will show you that we're in pretty good shape with swing yet we still have some work to do there this is on a feature which I've been persistent about for years and I think we're finally getting to the point we're going to have it I believe hopefully by GM is the ability to run multiple java applications and share a lot of its metadata it turns out that if you look at a class file the instruction stream is only a small part of what makes up class file there's an awful lot of metadata in there and if you don't share that metadata across invocations of a Java VM then you can end up eating lots and lots of memory especially for something like swing it's a fairly large UI toolkit so again imagine running five java applications you want them to share as much data as possible again to get the footprint down and last and not least launch time we're very adamant that applications have to launch in a fairly sensible time frame where sensible is between one and five seconds and we have some very large java apps were running now that that take about 10 seconds so on that go is 10 and again we'll show you that we hope to get that down to five seconds but it's certainly a long way from where where we've come where some job applications on mr j on mac 9 could take as much as 30 seconds 30 40 50 seconds so here's a quick pointer three incredibly talented people to in the vm space and one graphics nut john berkey why I say Jim berkey that same gym anyway it's John berkey and they're going to be giving that talk i highly recommend it it'll give you a lot more details and then i have today on performance compatibility this section of the talk is mostly Sun stuff but I still think it's important to review with you if you haven't kept up with the Java lingo when they went to Java to they defined a whole new process it defined a whole new set of terms and so on and a lot of that was actually good but it takes some getting used to and standard editions called j2se that's the acronym and a lot of people use there's a micro edition and there's an enterprise edition right now we're focusing on the orange which is the standard edition edition I think it might be better turn desktop so that's why I put that up the micro editions probably better turn embedded and you can think of the Enterprise Edition as the server so since desktop is our focus at Apple we want to be great on the desktop and then potentially worry about some of the other editions webobjects for instance might take some components from j2ee like javabeans but might not support the whole stack in its entirety those are decisions that we have yet to make so key features swing interface objects like it's one of the more compelling features of Swing is it supports multiple platform looking fields and we'll get into that later java 2d advanced graphics aboard the java to dapi is actually very similar and supports a similar feature set to courts and in fact our implementation on Mac 10 relies heavily on courts there's new collection classes drag and drop is a feature that I believe we have in our mrj we put that in as a stopgap it was modeled after the Java to support to now eat we're just relying on the standard drag and drop that on Java two supports we have prints support and improve fonts and international text there's a very fancy policy based security mechanism there's Corvus support for those who were unfamiliar with Kaurava korva is a way for other languages and other prophecies to talk to java and vice versa many people are using that technology in the enterprise and a really cool feature of Java to is they've really taken each sub component of the VM and made some nice api's to it so for instance there's a HJ BN these are all interfaces which if you wanted to plug your own vm into our implementation you could I don't anticipate that most of you are going to go to the trouble of implementing your own vm but some of you may plug into the debugger or the profile interface that enables need to basically right GUI based tools atop our VM and for profiling and debugging and so on so for instance those are the API so that Metro works code warrior project builder and so on and so forth use sound support and a ton of other stuff it's just it's it's huge so talking about that 118 is a set of 23 packages about 5,000 members Java to standard edition is just it's a huge platform it offers a ton of functionality and you know we went through this last year of people who are here contains about three times more api's now whenever you do that big a release where you've expanded your the API surface area by three times you made all kinds of changes you're undoubtedly going to break people and that's one of the concerns the people had in the java community is as i take their 11 app it can be challenging to find the compatibility differences particularly in the AWT area so this is an issue that we're working on with son all the licensees are working on what son I don't think son will ever make that big a leap that is add three times more AP is at one step I think they learned their lesson so to speak and the releases that will be coming out now will be more of an incremental fashion again it's it's just more sensible to increase it to incrementally release use API is rather than go to 3x overnight so as a result mission-critical applications have been slow to move there's a very good 15 page of document on the web if you're interested in concerns about moving your 11 code to reference this document it has a ton of great information on what the source level binary and other types of changes that you're likely to encounter and in general new java applications are targeting the java to platform applets aren't aren't being written to java to in general so we we test our our java product with something called the j ck the java conformance kit or compliance kit from front sun and we're obligated as licensees to to pass it but what's much more compelling to me is how many real-world applications we run so for instance Oracle has 40,000 test Suites we currently passed their tests as well and are continuing to work with them and passing even more Yahoo excited a really interesting development is I think I brought the magazine with me I don't know if you guys have seen it but let's see Charles Schwab has this really cool on trading app it was advertised in this guy over here it's called velocity anyway but it's our first example of a shrink-wrap java app that actually people are using day to day in this case for trading stocks a pretty mission critical thing if that's what you want to do and it's um that's worked incredibly well we're extremely happy with the reliability of that product as well and they've been great to work with an SI p is another company we're working closely with to make sure their enterprise applications are working really well so we're getting a lot of testing and it's it's really neat to see how relevant actually this job of technology has become in the enterprise space so with that in mind I'd like to bring up someone from Oracle things Peter hello thanks Peter [Applause] okay our apps this is excuse me there's actually just one great word which is finally we've been working I've been working with Apple on trying to get our apps running on their a Mac platform and variety of hardware os's in the past for I think three or four years so we finally actually been able to achieve this with the most recent release if you don't know oracle apps oracle apps are basically mission-critical enterprise apps dealing with financials and manufacturing and crm applications call centers sales force automation all these different things there's 70 in total and our code markets really are the university market a lot of creative services firms people that are obviously have mac as a dedicated platform and they also want to run their standard business apps they don't want to have to have them sit side by side with pcs so we have actually I think easily a hundred million dollars of potential revenue that we could probably earn we will probably earn as we move forward into this space so that's a great opportunity for you as well what I thought I'd do is just show you a little bit about our apps if we can switch to the to the system this is that these apps are built with Oracle's Jade with Oracle's developer tool which is a four GL style tool and it runs now on the mac platform so what we're looking at here is this is just going to be a quick general ledger example but basically what we have is a process flow navigator so you know users as they want to do transactions whether its purchasing or general ledger manufacturing or billing or whatever they have a kind of a map that they can walk through as they go through the transactions so one of the things that we can do here is for instance let's say we were going to reclassify our revenue as we move through these maps you get a little green line indicating where you've gone and what I can do now is launch the app and as I do that we the app comes up relatively quickly this is a-comin oh I guess I should also mention the environment here all we've got here running is internet explorer with a standard apple mrj and all of our apps and everything is across the network it's our corporate Oracle corporate so what we have here is basically way to look at information for our journal entries we can resize some columns we can add some tracks and things let's just quickly do a journal entry kind of show you want you to see you know part of the the AWT that the modified or enhanced pwt is you see the whole screen just popped at once because all the objects are being laid down in memory before they're being displayed so what we can do is we can do a quick transaction here if I can type without my fingers here so we can kind of go down here one of the characteristics of the Java app for us is what we call high-volume productivity one of the key elements we have to product strategies or design points if you will for our apps we have what we call a self-service design point which is generally characterized as HTML easy to use single click that kind of thing we're all familiar with it and placed in the hands of completely untrained users the other audience what we would call the proficient professional clerk it's somebody that actually demands high productivity apps they're sitting down their whole job is doing nothing but keying in data all day long and what they have some of their requirements are things that only Java can handle things like type-ahead things like when you're looking for a list of values the the windows pop up in the context of the screen having keyboard equivalents there's actually a large number of things as you probably have made choices yourself about what's good for Java versus what's good for HTML so and of course we have Java embedded in HTML as well but these these are the core what we would call heads down administrative apps so you get certain kinds of dialogues popping up ah and all sorts of keyboard equivalents here i'll just show you some of our UI here what we're going to do is we're going to move product revenue from see here i have to define my accounts here we've got so we have some unearned revenue that we've received on behalf of all these universities they've been waiting for macintosh product all these years i'm going to go ahead and and put that in there and we'll add another entry here and if i knew these entries numbers off the top of my head and just do it so here let's let's go here quick transaction and now we want to go from unearned revenue we're going to go to miscellaneous revenue and we just so happened oops Oh error message there we have product X which means mac-10 so we're going to go with that and we're going to put in 100,000 whoops on 22 few here we only do balanced entries okay so basically we do a transaction we interact with it a little bit we go ahead and post the transaction up tells me it did it and it gives me a tracking number and basically the transactions done so that's kind of a interactive experience for a production user and what I can do now is just show you as we go down through the process map oops what we want to do is as we go through the process and post the journals then you end up seeing you know the kind of the continuous pneus of the process so it's a great way to write apps and it's a great way to build them modularly and based on different kinds of control points that businesses need this is the kind of a really nice user interface to break up big apps into functional components and do stuff so that's just the marketing of our own products but basically that's what I wanted to show which is our developer product that is this it's this product actually is the development tool for roughly 7,000 of these products that cover 70 modules so it's a very big app and it's a it's the it's Oracle's premier application thanks a lot ok so I know there are folks out there saying well that doesn't look like a Macintosh you I that's not the idea the idea for Oracle is and people could argue with this but at least it's their goal to have a branded UI and for them to have a UI that works the same across multiple operating systems and in fact Oracle spends quite a bit of time making sure their app does have the Oracle branded look and feel so that's in a nutshell why it looks different and again that's one of the goals of the platform the Java to you watch toolkit is to allow you to have the branded you I if that's what you want so I don't know how many of you folks caught it but there was a relief press release April 14th the talks about son working closely with some blue ribbon vendors fortunately Apple was one of them there's been a lot of frustration in the java community some of you are probably aware of this with sons attempt or lack thereof to standardize java there was a nancy attempt there was an ECMO at nth and now the third pitch so to speak is this new JCP 20 and we've been working closely with them to make sure this is a sensible process which will benefit Apple as well as the other companies and actually as well as individuals who might want to get their say in as well so i think this process is actually looking pretty good and it's still evolving but the good news is we're at the table the other press release as far as Java compatibility is concerned is they just released 13 which is the hot spot client vm that actually we're shipping it's the same hotspot client p.m. we're shipping in DP for but we haven't integrated all the 13 stuff yet so the release that you're that you're getting is based on somewhere in the middle between 10 and 13 but by the time we go GM we will upgrade to 13 entirely which is the current shipping standard we currently pass ninety-six percent of the j ck test i'm told for a beta product i'm pretty happy with that so we have four percent left that will nail on by the time we go GM and as i just said we plan to upgrade to 13 and son really did listen to their customers for 13 again they got a little bit burned by the big gulps they asked everyone to take with 12 and 13 is almost entirely performance and compatibility focus it has almost no new features and has about the same footprint as the previous version so another demo the first demo it might have been obvious but again it's mr j to to running on mac 9 platform the demo i want to give now is asked blake stone and incredibly talented engineer from in price to come up and give a demo on java to on 10 so thanks before we launch into this I have to clarify a few things we're going to be showcasing some fairly interesting technology here at this point it is a technology demo we're obviously working with early technology from Apple in the form of DP for we're working with technology of our own but we haven't announced any products at this point so I'd like to have to remind people of that before things get too excited but it is interesting to note what we've been doing what we've been doing is been working with a partner who is extremely interested in building a premier Java to platform in building technology that makes Java developers sit up and take notice so that attracts our attention after all we have some absolute world-beating products in that area as well so there's some natural synergy and we thought this is an opportunity to see how they work with partners and how that process might work out and be honest it's been exceptional I've been very responsive to our need for performance tweaks our need for fixes in some areas in fact just the last session I was in with John berkey I saw him in the row ahead of me busy trying to tweak a few last things to make the product even faster I'm not going to take the chance and run with those fixes here on stage but just so you know that kind of thing is ongoing we're getting better and better performance so what is it that I'm talking about of course what I'm talking about is jbuilder so if we can switch to the machine over here and bring it up I'd like to have a look at a product that consists of about five thousand classes so you saw the statistics on Java to itself this is enormous in terms of code bulk our product is actually larger than the jdk in terms of the amount of Java code involved so will it run on this new platform in a preview stage well we'll hope so this is a demo after all we'll see just how far we can get I'd like to showcase some of what you can do with a pure java application for those of you who aren't familiar jbuilder is java development ide and as such it has a lot of what you'd normally expect the ability to create and manipulate projects edit code and so forth and I'm going to start with a new project and just bring up some of the Wizards that we have for manipulating projects in our environment put the system swap itself back in hmm it's always the way I like demonstrations to begin we'll see if this doesn't behave well for us will restart the product of course this all went incredibly well in rehearsal so some of what was being talked about earlier is to the launch performance for java applications so we'll get an ideal opportunity to demonstrate that here launch performance for a java application of course is critical and a lot of what we're seeing is a very expensive startup process in terms of loading the imaging and so forth of the basic class libraries but really the launch time for the product is not bad it's actually faster than a lot of native applications on the platform which is got a quite gratified so from there we're going to go ahead and start off with our new project so we build a new project here within that project I'm going to request that we go ahead and build an application and it will give us a couple of the sort of basic application starting points and a frame and bring us into the editor in this environment what's interesting here to note is that we're running a pure java application the editor isn't some piece of native code in the environment the editor is actually written in Java code and as such you'd expect it to exhibit performance problems but in practice things like syntax highlighting noticing the keystroke that the contents was changed into a comment is incredibly quick the ability of the environment to keep up with structural changes is quite amazing as well what you're seeing on the left hand side here is a structure pain showing me the structure of my file but I have a single class with a number of elements declared if I were to go in and declare a new structure element it just shows up in the list so we're parsing behind the scenes to try to give us the information about what is in our particular file here and we can browse using that information as well we're also getting additional information on the fly because we're parsing the Java code in the background if I make a mistake in my code and just keep working it'll notify me by showcasing that there are errors in my code and allow me to go directly to that line of code so i can fix my error on the fly so we're not waiting for compile time to catch that kind of thing it's an extraordinarily productive environment so I'd like to start with that as a starting point and go ahead and try to build something but of course when you're building something what you'd really like to be able to do if use a visual layout to work with Java Bean so I'm going to move over to the designer here and in the design environment we have the ability to place javabeans i'm going to use swing components after all they are more or less standard javabeans and they'll allow me to to prototype the UI fairly rapidly for those of you coming from an environment where I hear lots of concerns about layouts is there enough space on my layout to accommodate this change well if you're a Java developer you know that there's some extremely sophisticated technology for dealing with layouts but it can be quite difficult to learn so it's easiest to start in sort of a raw positioning an XY layout mode I'm going to go ahead use XY layout to place a scrolling region and within that scrolling region I'm going to go ahead and drop a list and I want to drop in a couple of buttons and I want to drop in a text field and then we'll go ahead and write some code what's interesting is that I have been writing code all along everything I do in here every time I drop a component every time I edit something it's writing java source code so you can see behind the scenes that it's written source code here to set the text on the buttons and so forth what's unique about our approach is that we don't deal with this as a code generation or one way technology we don't block this off from your editing we treat this as a fully two-way tool where I can go ahead and modify my source code and then drop back into design mode and you'll see that those changes are reflected immediately in my design it's actually parsing and executing the store so we'll make a few more adjustments to my layout here and once I've got to lay out more or less the way I want it of course this this gives me absolute positioning which 1i scale things are changed the text on buttons isn't going to work for internationalization so I'd like to change it to a grid bag layout so what do I need to do I need to tell it to change to a good bag layout and what's happened is behind the scenes it's figured out the optimal grid bag layout to use for that position so as I internationalized this he's my internationalisation will see the automatic adjustments that are taking place so I've got the basic layout in place and I'd like to go and add a little bit of code behind the scenes and of course we can just wire events up i'd like to go ahead and and wire up an add item and immediately I discover i want to add an item to a list swing lists are a little awkward you need a model you need to wire up the model and so forth that's fine this is fully to way we can drop back into our designer and pick up a swing model using our class browser you'll notice that our class browser knows about com Apple classes it's because it's dynamically discovering from the classpath what classes are available so if you add third-party classes or switch to a different version of the vm will automatically adapt to that additional technology but let's go in right now and pick up the Java X swing and I'm going to use the default list model I can find it and so I'm going to drop a default list model in place take my J list and wire the model up and now I've established a relationship between those two and i think do something interesting in code with them what i'd like to do in code is go ahead and add something to that list model do i remember the name of the list model no heavens it's a list default list model something so i'm going to invoke code insights which is a technology that from within this context tells me here are the things i can legally refer to in this case it knows about default list model one because within this scope it's visible okay i want to use default list model one what do I want to do with it well now it's really a Tyvek scare and said here are the available methods and there is in fact something called add element and for add element it's gone and checked and there's only one overloading of that method it takes one parameter of type object and it's even gone to the source code for that method defined the name of the parameter obj it's kind of convenient so we'll go through and take up the jtextfield jtextfield one and again use code insight to find get text it takes you to know parameters or an offset in a length but that sounds fine to me we'll go to the next step which is that I want to wire up the delete button to go ahead and delete the selected item okay so it looks vaguely similar but what I really need to do is I need to find out the the position of the selected item and I can do this from the list there's a get selected index but what does that return if there's no selection well if I can't remember off hand I can simply select with a single keystroke but I'd like to go and find the declaration to that method it found the source code where I can see the Javadoc see offhand but it returns negative 1 if there's no selected item and just use the browser style controls to navigate back to where I was writing my source code so if the position isn't negative 1 i'd like to go into that default list model and remove and it takes an integer good it's going to make my life easy so I've got live code here I'm going to go ahead and compile that code it's compiled it's running we have our own compiler integrated in the environment you'll notice of course since it's loaded it's active it's a lot faster than using Java Sea from the command line and we've got a live application so we'll put in one and two and three select with pellet directly next time we'll delete one of those items gleet does nothing if there's no item selected and so forth now it just so happens that our wizard has helped me write a well-behaved java application that if i close the window the application goes away have you ever written an application where that's not the case it's easy to get rid of all of you I and still have a rogue task in the background so we provide a natural mechanism for seeing not only console i/o from your application but to be able to see that it's still running courtesy of an icon here and to be able to just stop that application directly from within the IDE kind of a nicety ok so that's sort of a basic swing application but if I wanted to take that to build a mission-critical database application with it to be sort of painful there's obviously a lot of work that needs to be done to wire things up to swing so let's go another step and see what it would take to write another application within this project from my other application I'm going to take advantage of the fact that we ship with an awful lot of interesting technology out of the box our own class libraries which you're free to redistribute in the form of something we call data Express so I'm going to drop the data Express database and try to go and connect to a database but wait we need a JDBC driver and we need some sort of database on the back end well it's nice our professional edition actually ships with a full sequel database entirely written in Java called J datastore have a quick look at that that database behind the scenes I'm going to go and open a J datastore database and I'll have to bring up the database technology so we'll launch the server here and then browse quickly to see some of what's available in this particular database so this database we can see how much how object allocation is working within the file we can see a bunch of the tables that are available within the tables we can see indexes and so forth so we have this full management interface again the management is your face itself of course is written in Java so we've got a database to connect to let's go ahead and use an existing connection to this J data store database test that connection to make sure again the database is up and running that we can connect to it without any problems probably shut the database down helpfully by quitting that prior application and then go ahead and connect the query to it and so we have a nice little component that represents a query see ya and connect the query to our existing database use our built-in sequel builder to go and find a table within that grab all of the columns from the table we can see the sequel that it's automatically generated on our behalf and we have a query fine but we need to connect that to visual information that's fine we have components to that as well I'm actually going to just use borderlayout to do my work here drop a strolling region and a table and how much co2 by written so far well I can connect to this database and get live data at design-time end at runtime without writing a single line of code and we'll take that a step further drop in a status line and the navigation interface as well and connect those both to the same data set so now i have an application that i'm going to go ahead and compile and run and we'll go ahead and connect to the database and see what zero code can do in terms of database connectivity with java that's excuse me launch time again takes a moment for it to come up and actually connect to the database in the background but what will have here is a UI that allows me to view that information manipulate information navigate through it etc so we can navigate we can of course resize columns we can reorder columns if I want to change the name of somebody here I can change it we can see in the status area that I am editing a row normally the status area shows us what record were on we can commit those changes back to the database all without writing a single line of code so that's fine let's def dandy what we've got is the ability to be extremely productive at dealing with Java code in this environment but you wouldn't have much of a full-featured ide if you didn't have a debugger so I'd like to take a quick tour of the debugger we're doing okay on time here have no idea to be armed basically I'd like to bring up a basic application place a breakpoint in it and we'll go in and launch the debugger our little application here performed some some basic console you I in this case it's going to prompt me for my name before hitting that break point and then stops when it hits the break point of course at that point I'd like to be able to see the context that I'm in so I can see that I am stopped at a thread called main in the main thread group which is in the system thread group and that there are two stack frames here I called from the main method into the go method and I can see in the go message that I can see the this reference drill down into that see the class that it belongs to any of that classes parent classes and static members I can see other variables and context like this first what have you we have some interesting convenience functionality for allowing you to manipulate information as well I can actually go and change values on the fly in an application on debugging for example if I step past this line that prints my name I could go and even change a string value on the fly and say the new string value I got focused in the wrong place here of course we are running on beta software please expect a few quirks along the way so we can change string values integer values within the debugger we can also do things that are quite unusual for a debugger like create a field breakpoint what's the field breakpoint it's going to tell me every time it tries to reference this particular variable so I'm going to continue my execution here and we'll see that it is stopped automatically at this line which is referring to name and giving me the message stopped at break point reading debug me name in fact we can go and select for that field breakpoint individually whether it should break on reads of that variable or break on rights of that variable so an enormous amount of flexibility I'd like to do one last look because Java takes a serious look at what it takes to do multi-threaded applications there's language support built right in for multi-threading so what happens when we go to debug a multi-threaded applications well it adds a whole new set of problems because we need to be able to keep track of what locks are being acquired in this case I'm acquiring two locks on a thread and our debugger will actually show you the monitors it'll show you what the object is that's locked and what thread is locking it and as I proceed a little further here and get three threads we can see situations where this object is is owned by one thread there's another thread waiting on it so that we can see situations where we're getting multiple threads cooperating here and go a step further to situations where our entire application has locked up on us and by pausing it we can see that it's highlighted these two as the cause of the deadlock that is currently active in my system I can tell we're running a little low on time here I suspect but I would like to take this time to really point out that what we've taken here is again an enormous java application and brought it over to the mac OS 10 platform and while it would be natural to say what kind of porting work did you do to bring it here the porting work we've done is working with Apple to tell them what issues we've run into in terms of compatibility with their vm not a single line of code has changed from our shipping products this is the product you can purchase today on a number of other platforms so that's really exciting from our perspective we're looking forward to moving a little further with this technology incredible well that demo blows me away you guys were a little quiet didn't it blow you away do again it's the best way for me to show you how real Java to is on Mac 10 this thing is a torture test for the Java VM I think son uses it internally to make sure their stuff runs every time they make a change so again it's you know not a shipping product it's not perfect yet but considering how much work was done on in prizes part it's just incredible how far we are and the person on our end who actually helped get it to this point and really owned this is John berkey John can you stand up for a second in fact last year at WWDC when I got off the stage Blake introduced himself and told me they were doing this work and asked if we were going to have Java too and I said yes we're working on it and then went back to the shop and just informally said to the folks we have to make sure this stuff works for next WWDC and to see it working now again is really great at that time it wasn't even the product you would come and shown me the product later on and when actually I gave obvious demo as well because it was the first pure jaw large pure java application we had seen running on windows at the time that look like a great application it wasn't slow it didn't look funny and and so on and so forth whereas a lot of the other IDEs and products in the java space we're typically not as a fit and finish that we typically expected Apple so let me find my deeper I think it's in my pocket okay so the last part of the talk we have like 15 minutes left and because this is an overview talk we're advised not to do Q&A so I don't think we're going to have any time to do Q&A today so I urge any of you if you have any questions on this stuff either go see the other talks about Java or come to our feedback form which we'll talk about later so now I'd like to talk about the third buck third mug which is integration by far this is the most important thing we're doing at Apple is integrating this in a sensible integrating job in a sensible way what does that mean from my perspective windows deployments totally busted now because again son has made this big leap they went from 118 to a 2.6 megabyte footprint that's what those numbers say to a nineteen point two megabytes installed footprint with one dot to dot to Microsoft doesn't bundle this we are going to be bundled bundling this so anyone who writes to the job of two platform gets to depend on it on our platform they don't have to lug it around like they have to on Windows to give you a sense for what 20 megabytes installed is is like I decided I'd measure carbon and carbon weighs in at about 11 megabytes on DP for so you know since you're a Mac Developer what carbon is about so imagine two times that which is again what the installed footprint is on Windows but the install footprint is only one side of the story the I think the most important side of the story is Java was not the design with a static deployment model in mind just think if you're an application and you're carrying around this Java Runtime environment that's 20 megabytes and it's just a part of yourself so to speak why are you paying for the interpretation why are you paying for the class verification why are you paying for interpret you know there's just so much stuff you pay for because Java is a great systems model system language and vm model that carrying it around makes no sense from a time perspective either so both from a time and a space perspective what people are doing on Windows is nonsensical the Sun will solve this problem I believe even in spite of Microsoft but it's all today on our platform so Oracle can go to their customers when they move the Java too and not have to carry around another 20 megabyte jar file every time they open a connection for instance so I think it's pretty critical that we r bundling this stuff we're tightly integrating it and we're going to make sure the footprint is is very low as I think most of you aware we really like the Java language and virtual machine again it's a great model it's a great systems model C++ drifted away from any application uses at the system layer because it wasn't a great system level object model it's a fine it's a fine object model but it's just as an appropriate for systems development and that's one of the reasons job is taken off technically as much as it has it's very appropriate for a system object model just to further explain what I mean by that I'm sure some of you are aware with the fragile base class problem i guess is one common way of referring to it but basically the ABI that a compiler uses is is in the c++ world typically proprietary and owned by the compiler java vm specifies how all da class files are to be interpreted this is a huge interoperability win and it means you can migrate to new instances of the vm fairly painlessly see we have the java to standard edition packages but here's where we innovate we have web objects and as you heard today we're going to appear java version of whether objects but even right now it's all wrapped today so that you don't even know it's written in objective-c even though it is cocoa written in objective-c we wrap that as well but it's totally accessible from java and quicktime is is also accessible from java all three of these technologies are incredibly important to apple and sitting atop is project builder and interface builder let's take the tools first I just want to show you a screenshot of something I think you saw in the keynote avi brought it up reef Lee we have totally rewritten what next used to call project builder rather than rename it we kept the name but rewrote the entire product we figured most folks in the apple community didn't really weren't familiar with project builder so we you know the name was sensible so we kept the name and rewrote the whole product and what you're seeing here is a sketch which is on the system you can go look at it it's a cocoa objective c program it's a little bit silly we still have yellow in the package names but they'll be renamed appropriately before we go final with this but right there you could see with project builder we're going more for i guess some people refer to it as user centered some people refer to as a document centered but that editor flash viewer is used to view or edit multiple data types in the keynote i think you saw a fancy diagram in there in this case you can see there are release notes which is an RTF file that's a tiff file and that's a java file all from the same context you're not switching to and from many apps and project builder is a tool which a teepee for fully supports c c++ ansi c obviously and supports a lot of our frameworks java developments just coming online it works fairly well but for GM it's going to work a lot better if you care about it go see the project builder talks oh another important thing to mention about project builder you just saw the great enterprise development environment one of the big differences between project builder and jbuilder is jbuilder is pretty much a single language single framework development environments targeting java too okay what project builder is it's a multi-language multi framework development environment again it supports the sea based languages along with job and it's going to be supporting applescript as well there are some demonstrations on that so there are trade-offs you make in a multi lingual on environment that you don't have to make in a single language single frame work environment so I believe both actually have different markets and I hope to see both of them thrive in our community with objects they are giving their state of the union right now I snarfed a couple of their slides if they fortunately they're going at the same time because this was going to steal some of their thunder but powerful I'm sure you're familiar with it we use it internally pretty extensively we run our whole apple store on it and here are some of the features so one thing that's important to note with web objects and we use it there are many many customers who are using it Disney mci just Steve showed the whole list of them at the keynote it's technology which is very mature it's been around for a while and it integrates not only with Java now but with quicktime for java as you saw in the keynote we want many awards the most recent one i believe is we won the cody in march and it's critically acclaimed five-point know the big thing with five point 0 is just going to pure java right now it depends on the objective-c runtime for its deployment and the benefit of going pure java is where the objects can benefit from all the other java VMS that are being done at HP axon and so on just as we're investing in java so it means we don't have to deploy some of the objective-c technology on some of the servers and it uses jdbc and i believe by i don't know when five point i was going to be released i guess i shouldn't stay in the future quicktime for java i won't go into it except there's a beautiful book that's been written I don't have a copy and I couldn't get a screenshot of it but I urge you to take a look at stacey's or wherever you buy your book on computer books there's a great book on quick time for java and again it gives you the real professional quality digital media capabilities from java and in fact allows those class files to be used verbatim on either windows or mac there's nothing proprietary a special that we're doing to make this work and there's a quick time for java talk actually right after this one they'll probably be really nice to talk to you to attend an a2 okay the swing looking the swing integration we've done is pretty unique in the many of the platform looking feels that are done with swing are emulated that means they don't interact with the Native system at all they try and emulate the look and feel what happens there as you can imagine is when the look and feel changes you have to then re emulate or end up having the wrong look and feel and in addition to changes sometimes you just get it wrong because you didn't really understand what the native looking feel was so there's a whole class of bugs that I'm usually crop up around emulation so what we're doing is integrating directly with the appearance manager so the aqua look and feel you saw on stage in the web objects demo with swing was a swing application that was again written directly to appearance manager under the covers the java programmer didn't know anything about the integration it just happened automagically so we also do the correct many placement correct meaning associated with the screen as opposed to the window and swing applications look great so from our perspective now the job is fairly fast and I think it shows that that demo again that's a large application the performance of it is fairly good so the only problem so to speak with that app is it didn't have the Aqua look and feel so I'm going to bring blake up briefly to show you that ok I can get the mic back great what we're going to do is have a quick look at the fact that jbuilder was designed from the beginning to be look and feel aware so when we go to choose ide options it gives us the ability among other things to switch between the installs look and feel so here the mac OS adaptive look and feel is just one of the ones that shows up so once we pick that and hit ok we'll see that we get the aqua look and feel menu bar at the top of the screen context menus that are translucent an actual display that gives us you know again additional tab the work so it looks fantastic and we're really looking forward to allowing this to be sort of the default look and feel basically if this is something you're excited about please let us know spend some time to catch me while I'm here at the show or talk to Tony here in the front corner if you can wave or tel apples so this is something you're interested in seeing thanks again so okay so actually I have these boring these will seem boring now but that's good thank you see Oh what I do oh ok ok so you'd see switching back and forth it's almost like well let's go to the next one here's a it's called metal it's the built in Java look and feel and when you switch to aqua it's almost like it comes to life it's just so much prettier right so unfortunately some of this cool aqua integration isn't in DP for so you guys won't be able to play with it for do people or sorry about that we actually hope to do a net release in between now and GM where you can get on some of the stuff for months before we actually go GM we're going to improve our project builder support for jobs i think i mentioned that we're going to a new application embedding model the main folks you care about this or like omni web the internet explorer folks that's how you embed a vm and an applet within an application but you may have an application that wants to embed this stuff within you if so then I you'll have this application and bedding model that we're doing Wow closing thoughts we have how many minutes we have four minutes left so I guess what's getting fun now is we have a team that's kicking some serious butt on this stuff and there's real applications that are starting to get exciting like velocity like Oracle's apps like this beautiful ide that in prize is done and fundamentally that's what we do if this stuff there's no way to look at Java by itself and say it's great you have to look at the applications that are going to be produced on top of it and say they're great and if in fact they're great then we're happy and we know we're doing a good job so I have like two or three minutes left I'd like to bring the team up and give them a round of applause folks you want to come up you