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Java Forum / General / May 2006java with native GUI appearance?
I have a Java program that I would like to make appear to be a Windows application on Windows, a Mac application on MacOS, and a Linux application on Linux. Is there a way to do this? Also, is there a way to compile the code as Windows/Mac/Linux native? I am interested in maximizing performance. I also do not want to require the user to have Java installed, so running native would be preferable. Thanks! nooneinparticular314159@yahoo.com <nooneinparticular314159@yahoo.com> wrote: > Also, is there a way to compile the code as Windows/Mac/Linux native? > I am interested in maximizing performance. I also do not want to > require the user to have Java installed, so running native would be > preferable. As for the former, search the API doc index for getSystemLookAndFeelClassName. As for the second, you could look into Excelsior Jet or gcj, but you won't be able to avoid having to either distribute some kind of an implementation of the standard library, or require that the user already have such an implementation available. Since you can't legally distribute only part of the standard library, you're pretty much stuck with the whole thing.  Signaturewww.designacourse.com The Easiest Way To Train Anyone... Anywhere. Chris Smith - Lead Software Developer/Technical Trainer MindIQ Corporation > I have a Java program that I would like to make appear to be a Windows > application on Windows, a Mac application on MacOS, and a Linux > application on Linux. Is there a way to do this? Google SetLookAndFeel - first entries. > Also, is there a way to compile the code as Windows/Mac/Linux native? No - well not from one tool. > I am interested in maximizing performance. You should be sure that the app running in a JVM is the performance bottleneck before going this road - often it isn't. >I also do not want to > require the user to have Java installed, so running native would be > preferable. Then why bother with Java? Seriously, develop it in C++ and just build against your target platform. When ever you try and work against a fundamental concept of a language, you have to give up some of that languages benefits. > Thanks! Well, I developed it in Java initially because I was familiar with the language, and sure that I could build a proof of concept in it. My concern is that if I let other people run it, I want it to appear to them to behave exactly as a program should in their native environment, including installing the way that native programs install. I don't want them to say "what is JRE?" and get confused. It looks to me that SetLookAndFeel generates a GUI appearance that is similar to, but not the same as, the native GUI. For example, you have a java logo in the corner, and widgets don't look quite right. Is there a way around this? It actually runs fine on an older machine in Java. It's a user experience issue more than anything else... Ok. I tried it, and it does indeed produce the appearance of being Windows native (mostly). But is there any way to make the icon the correct icon, and not a Java coffee cup? Thanks! > Ok. I tried it, and it does indeed produce the appearance of being > Windows native (mostly). But is there any way to make the icon the > correct icon, and not a Frame.setIconImage(Image) I think there is no method getDefaultIconImageForPlatform() but I guess your application will have an icon of its own. Otherwise, that is a good reason to design one now :-) Cheers, Simon > Well, I developed it in Java initially because I was familiar with the > language, and sure that I could build a proof of concept in it. My > concern is that if I let other people run it, I want it to appear to > them to behave exactly as a program should in their native environment, > including installing the way that native programs install. I don't > want them to say "what is JRE?" and get confused. Distribute an installer. It deals with that. If you don't, they're going to say "what is DLL?", "what is the registry?", etc. Alun Harford nooneinparticular314159@yahoo.com <nooneinparticular314159@yahoo.com> wrote: > Well, I developed it in Java initially because I was familiar with the > language, and sure that I could build a proof of concept in it. My > concern is that if I let other people run it, I want it to appear to > them to behave exactly as a program should in their native environment, > including installing the way that native programs install. I don't > want them to say "what is JRE?" and get confused. They don't need to. You can distribute the JRE with your application. The JRE (Sun's, anyway) does not need to be "installed" in any special way. You can just extract it to a subdirectory of your application, and set up a shortcut / shell script / Start menu entry, or whatever else is appropriate for the platform, that runs it with a full path. Using executable JARs for your own application helps here, too, since it makes the JRE less dependent on environment variables and the like. I've done that for years, and our customers don't have any clue what a JRE is. > It looks to me that SetLookAndFeel generates a GUI appearance that is > similar to, but not the same as, the native GUI. For example, you have > a java logo in the corner, and widgets don't look quite right. Is > there a way around this? Those are not native controls. If they look subtly different from native controls, there's nothing to be done about it. My experience is that Sun's look and feels are close enough that customers don't tend to care about the remaining differences... assuming, of course, that your application actually does unique and interesting things besides just having a user interface. For native controls that are usable, see SWT, but you'll pay a price in working with a relatively impoverished programming model. The AWT also has native controls, but they are well-nigh unusable and don't include things that are considered fundamental these days, like tree and table controls. Signaturewww.designacourse.com The Easiest Way To Train Anyone... Anywhere. Chris Smith - Lead Software Developer/Technical Trainer MindIQ Corporation Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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