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The previous section listed some rules you should follow to avoid making your applet's users want to throttle you This section offers tips that can make dealing with your applet as pleasant as possible
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Some of the tips here aren't easy to implement Still, you should be aware of them and implement what makes sense for your applet
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1 Test your applet well Before you unleash your applet on the world, test it thoroughly Once it works well in your normal browser/platform combination, run it in as many browser/platform combinations as you can find Ask people whose computers are behind firewalls to test it Take advantage of the Web; you can usually get other people to perform much of the testing for you 2 Make sure that your applet follows the 100% Pure Java guidelines Throughout this tutorial, you can find tips on how to make programs work well on any Java platform
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3 Use parameters to make your applet as flexible as possible
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Table of Contents
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Java Tutorial, Third Edition: A Short Course on You often can define parameters that let your applet be used in a variety of situations the Basics, The rewriting See the section Defining and Using Applet Parameters (page 433) without any
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ByMary Campione,Kathy Walrath,Alison Huml for information
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4 If Publisheryour applet has more than one file, consider providing an archive : Addison Wesley
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Pub Date ISBN : December 28, 2000 : 0-201-70393-9
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See the section Combining an Applet's Files into a Single File (page 441) for information
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Pages Make your applet appear as soon as possible : 592 5
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Applets can do several things to decrease their perceived startup time The Applet subclass can be a small one that immediately displays a status message Some or all of the applet's files the rest because it into an archive file to the web total download time If "This book stands above can be compressed has been available on decrease and read by thousands of some of the authors have received aren't used amount of the applet can which sections Java programmers The applet's classes or dataan enormousright away, feedback abouteither delay loading sections are confusing; the use a background thread to load them If you can't are good and whichthem until they're needed orconfusing ones have been improved I doubt that any avoid a lengthy delay in your by fire" -Metroplex Java User small other Java book has undergone such trialapplet's startup, consider using aGroup,helper applet nearby to give status wwwjavamugorg/reviews/ 6 Make your applet adjust well to on the job, The Java(TM) Tutorial, Third Edition , is a handsWhether you're taking a class or learning different sizes, different available fonts, and different platforms on guide that lets you quickly become proficient with the Java programming language Written by members of the Java Software team at Sun Microsystems, the book uses an interactive approach to Applets don't always by all the screen real estate they want Also, the amount of space help you learn the Java platform get example required to display your applet's UI can be affected by platform/machine variances in font availability, drawing techniques, resolution, and so on Since its first online release in 1995, the material in The Java(TM) Tutorial has been updated continuously to reflect reader feedback and new releases of the Java platform This third edition has By using layout cover v13 of the Java Platform, Standard Edition, well If your applet has been thoroughly updated tomanagers wisely, you can make your applet adjust as well as preceding versions as a minimum required size, you can use the getSize method to check whether your applet early as JDK 11 is big enough If your applet or custom components in it draw text using graphics primitives, you should check and adjust font sizes You will find clear explanations of such fundamentals as objects, classes, and data structures In addition, the book provides introductions to object-oriented programming, applet construction, and 7 If your design Other topics include exceptions, I/O, and threads To help beginners avoid many user interface applet can't do its job, make it fail gracefully common mistakes, an entire chapter is devoted to programming problems and their solutions Convenient Sometimes, at theapplet doesn't get the resourcesthis edition Also new for this edition are summaries your end of each section are new to it needs It might get so little space that it can't presentsections to help you practice what might not be able to connect to a server "Questions and Exercises" a meaningful user interface Or it you learn Even if your applet can't adjust successfully to the lack of resources, you should at least attempt to make your in this proven tutorial, you will be you might display a visible After working through the lessons applet fail gracefully For example,well prepared to use the Java message either in school or workplace programming language in your the applet's drawing area or in a helper applet near it that explains what happened and gives hints on how to fix the problem 8 Be wary of using text in images Although using images to draw text can result in good-looking, predictably sized text, the result may be illegible on some low-resolution displays 9 Use windows wisely
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9 Windows have good points and bad points Some platforms, such as TV-based browsers, might not allow top-level windows Also, since applet-created windows can take a while to appear, they can be disconcerting to the user However, putting some or all of an applet's UI in a window makes sense when your applet needs more space than it can get in the browser Using a window might also make sense in the rare case when your applet needs to remain visible even when the user changes pages 10 Supply alternative text for your applet By using alternative text to explain what your users are missing, you can be kind to users who can't run your applet You can supply alternative text as described in the section Specifying Alternative HTML Code and Text (page 439) 11 Implement thegetParameterInfomethod
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Implementing the getParameterInfo method now might make your applet easier to customize in the future Browsers can use this method to help Java Tutorial, Third Edition: A Short Course on generate a GUI that allows the user to set parameter the Basics, The interactivelyfor information values See the section Giving Information about Parameters (page 437) on implementing getParameterInfo
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ByMary Campione,Kathy Walrath,Alison Huml Publisher Pub Date ISBN Pages : Addison Wesley :ThegetAppletInfo method returns a short, informative string describing an applet December 28, 2000 :Browsers and other applets can use this to give information about your applet Here's an 0-201-70393-9 : 592
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