TweetFollow Us on Twitter

Aug 96 Top 10
Volume Number:12
Issue Number:8
Column Tag:Symantec Top Ten

Symantec Top 10

By Rick Hartmann

Note: Source code files accompanying article are located on MacTech CD-ROM or source code disks.

With all the excitement about Java, and the recent release of Symantec Café for Macintosh, we thought we would devote this issue of the Symantec Top Ten to Java.

(As this article goes to press there are updates to Café and Sun’s Java Development Kit for Macintosh soon to be released. Due to the rapid development cycle of these Java products, there will likely be numerous changes and bug fixes during this phase. Please read the release notes for the latest version of Café to determine if a specific problem has been resolved, and check the Café Web site, http://cafe.symantec.com, for the latest news regarding Java and Café.)

Q: Sometimes when I double-click on a C++ project, I get the Café Version of the Project Manager. Why?

A: The standalone Café Project Manager will soon be integrated into the Symantec Project Manager along with C++, C, and Pascal. Therefore the creator type was left the same as the SPM. This may cause some confusion until then, so if you have both Symantec Project Manager for C++ and Café, you should get in the habit of dragging project files directly to the Café icon or an alias on the desktop with a name that identifies it as the Café Project Manager.

Q: When I try to use java.net.ServerSocket or java.net.Socket, etc., I am getting a Java runtime error:

 Can't get watchdog proc

What is wrong?

A: The Macintosh Java virtual machine does not correctly handle the java.net package as of this writing. We expect an update from Sun that will correct this well before you read this. There is currently no workaround.

Q: My applet’s mouseMove() function is getting called continuously, even when the mouse does not move. Why?

A: This is an AppletViewer problem. Try dragging the HTML file from your applet project onto a Java-enabled browser instead.

Q: My applet behaves differently depending on whether I run it in the AppletViewer or in Netscape. Why?

A: There are a good number of quirks with the AppletViewer right now. Both products are beta. As these products mature and reach their final versions, we expect their behavior to be more consistent.

Q: Choosing the default font in Café Studio seems to cause a runtime error:

java.lang.NullPointerException
at java.awt.Font.<init>(Font.java)
at studio.init(studio.java:101)
at sun.applet.AppletPanel.run(AppletPanel.java)
at java.lang.Thread.run(Thread.java)

How do I fix this?

A: Studio generates the following:

 myItemfont = new Font(null, Font.PLAIN, 9); 

The first parameter must be a String; hence the exception. In the next release this will be changed to:

 myItemfont = new Font("", Font.PLAIN, 9); 

Q: Why am I getting this compile error?

Error: File Foo.class does not contain Foo as expected, but java.Apackage.Foo. Please remove the file.

A: You forgot to import java.apackage.foo.

Q: I renamed my Java application’s HelloWorld.java source file to foo.java, and also changed public class HelloWorld to public class foo; but now when I choose Run from the Project Manager, I get:


Could not complete the last command because the file was not found... -43


or:

Could not complete the last command because the AppleEvent was not handled... -1708

What did I forget?

A: Under the Project menu, in Options: Project Type, you must set the “main() class” popup to the name of your class that contains the main() method.

Q: When I run my Java application, I get this error in the stderr window:

java.lang.IllegalAccessException: ClassName
at sun.applet.AppletPanel.run(AppletPanel.java)
at java.lang.Thread.run(Thread.java)
java.lang.NullPointerException
at sun.applet.AppletPanel.run(AppletPanel.java)
at java.lang.Thread.run(Thread.java)

The stdout window contains this message:

load: ClassName is not public or has no public constructor.

What is wrong?

A: Your project type was set to be an applet instead of an application. Go to the Project menu and choose Options. Click on the Project Type. Set the Program Type radio button to Application and make sure the “main() class” popup menu is set to your class name that contains your main() method.

Q: When I try to run the StdinTest program from the Introduction to Java demos, it hangs my system. Why?

A: The current version of the Macintosh Java virtual machine is not doing standard (keyboard) input correctly. We expect Sun to correct this soon. It will probably be functional by the time you read this. Check our Web page for the latest information on these issues.

Q: How do I save the stdout and stderr windows to a file? Can I redirect stdout and stderr to files, like I can with C and C++?

A: Yes to both questions. Launch the AppletViewer. From the Apple menu select the Java Runtime menu. It contains menu items for both redirection of stdout and stderr as well as a Save Text Window item for the frontmost text window.

Q: I drag the applet class file on the AppletViewer and I get an error. How do I run applets?

A: Applets are designed to be run within the context of a Web browser that supports the Java virtual machine. You must first create a Web page with the proper HTML tags for your applet. At a minimum, for an applet to run, you’ll need:

 <applet code = myAppletName width=300 height=400>
 </applet>

You can then drag the HTML file on the AppletViewer or a Java-enabled browser.

Thanks to Andy McFarland, Kevin Quah, Scott Morison, Noah Lieberman, Michael Hopkins, Levi Brown, Glenn Austin, Steve Howard, Craig Conner, Chris Prinos, Peter Fry, and Mark Baldwin for their contributions to this article.

 
AAPL
$99.76
Apple Inc.
+2.09
MSFT
$44.08
Microsoft Corpora
+0.45
GOOG
$520.84
Google Inc.
+9.67

MacTech Search:
Community Search:

Software Updates via MacUpdate

Macgo Blu-ray Player 2.10.9.1750 - Blu-r...
Macgo Mac Blu-ray Player can bring you the most unforgettable Blu-ray experience on your Mac. Overview Macgo Mac Blu-ray Player can satisfy just about every need you could possibly have in a Blu-ray... Read more
Apple iOS 8.1 - The latest version of Ap...
The latest version of iOS can be downloaded through iTunes. Apple iOS 8 comes with big updates to apps you use every day, like Messages and Photos. A whole new way to share content with your family.... Read more
TechTool Pro 7.0.5 - Hard drive and syst...
TechTool Pro is now 7, and this is the most advanced version of the acclaimed Macintosh troubleshooting utility created in its 20-year history. Micromat has redeveloped TechTool Pro 7 to be fully 64... Read more
PDFKey Pro 4.0.2 - Edit and print passwo...
PDFKey Pro can unlock PDF documents protected for printing and copying when you've forgotten your password. It can now also protect your PDF files with a password to prevent unauthorized access and/... Read more
Yasu 2.9.1 - System maintenance app; per...
Yasu was originally created with System Administrators who service large groups of workstations in mind, Yasu (Yet Another System Utility) was made to do a specific group of maintenance tasks... Read more
Hazel 3.3 - Create rules for organizing...
Hazel is your personal housekeeper, organizing and cleaning folders based on rules you define. Hazel can also manage your trash and uninstall your applications. Organize your files using a... Read more
Autopano Giga 3.7 - Stitch multiple imag...
Autopano Giga allows you to stitch 2, 20, or 2,000 images. Version 3.0 integrates impressive new features that will definitely make you adopt Autopano Pro or Autopano Giga: Choose between 9... Read more
MenuMeters 1.8 - CPU, memory, disk, and...
MenuMeters is a set of CPU, memory, disk, and network monitoring tools for Mac OS X. Although there are numerous other programs which do the same thing, none had quite the feature set I was looking... Read more
Coda 2.5 - One-window Web development su...
Coda is a powerful Web editor that puts everything in one place. An editor. Terminal. CSS. Files. With Coda 2, we went beyond expectations. With loads of new, much-requested features, a few... Read more
Arq 4.6.1 - Online backup to Google Driv...
Arq is super-easy online backup for the Mac. Back up to your own Google Drive storage (15GB free storage), your own Amazon Glacier ($.01/GB per month storage) or S3, or any SFTP server. Arq backs up... Read more

Latest Forum Discussions

See All

This Week at 148Apps: October 13-17, 201...
Expert App Reviewers   So little time and so very many apps. What’s a poor iPhone/iPad lover to do? Fortunately, 148Apps is here to give you the rundown on the latest and greatest releases. And we even have a tremendous back catalog of reviews; just... | Read more »
Angry Birds Transformers Review
Angry Birds Transformers Review By Jennifer Allen on October 20th, 2014 Our Rating: :: TRANSFORMED BIRDSUniversal App - Designed for iPhone and iPad Transformed in a way you wouldn’t expect, Angry Birds Transformers is a quite... | Read more »
GAMEVIL Announces the Upcoming Launch of...
GAMEVIL Announces the Upcoming Launch of Mark of the Dragon Posted by Jessica Fisher on October 20th, 2014 [ permalink ] Mark of the Dragon, by GAMEVIL, put | Read more »
Interview With the Angry Birds Transform...
Angry Birds Transformers recently transformed and rolled out worldwide. This run-and-gun title is a hit with young Transformers fans, but the ample references to classic Transformers fandom has also earned it a place in the hearts of long-time... | Read more »
Find Free Food on Campus with Ypay
Find Free Food on Campus with Ypay Posted by Jessica Fisher on October 20th, 2014 [ permalink ] iPhone App - Designed for the iPhone, compatible with the iPad | Read more »
Strung Along Review
Strung Along Review By Jordan Minor on October 20th, 2014 Our Rating: :: GOT NO STRINGSUniversal App - Designed for iPhone and iPad A cool gimmick and a great art style keep Strung Along from completely falling apart.   | Read more »
P2P file transferring app Send Anywhere...
File sharing services like Dropbox have security issues. Email attachments can be problematic when it comes to sharing large files. USB dongles don’t fit into your phone. Send Anywhere, a peer-to-peer file transferring application, solves all of... | Read more »
Zero Age Review
Zero Age Review By Jordan Minor on October 20th, 2014 Our Rating: :: MORE THAN ZEROiPad Only App - Designed for the iPad With its mind-bending puzzles and spellbinding visuals, Zero Age has it all.   | Read more »
Hay Ewe Review
Hay Ewe Review By Campbell Bird on October 20th, 2014 Our Rating: :: SAVE YOUR SHEEPLEUniversal App - Designed for iPhone and iPad Pave the way for your flock in this line drawing puzzle game from the creators of Worms.   | Read more »
My Very Hungry Caterpillar (Education)
My Very Hungry Caterpillar 1.0.0 Device: iOS Universal Category: Education Price: $3.99, Version: 1.0.0 (iTunes) Description: Care for your very own Very Hungry Caterpillar! My Very Hungry Caterpillar will captivate you as he crawls... | Read more »

Price Scanner via MacPrices.net

2013 15-inch 2.0GHz Retina MacBook Pro availa...
B&H Photo has leftover previous-generation 15″ 2.0GHz Retina MacBook Pros now available for $1599 including free shipping plus NY sales tax only. Their price is $400 off original MSRP. B&H... Read more
Updated iPad Prices
We’ve updated our iPad Air Price Tracker and our iPad mini Price Tracker with the latest information on prices and availability from Apple and other resellers, including the new iPad Air 2 and the... Read more
Apple Pay Available to Millions of Visa Cardh...
Visa Inc. brings secure, convenient payments to iPad Air 2 and iPad mini 3as well as iPhone 6 and 6 Plus. Starting October 20th, eligible Visa cardholders in the U.S. will be able to use Apple Pay,... Read more
Textkraft Pocket – the missing TextEdit for i...
infovole GmbH has announced the release and immediate availability of Textkraft Pocket 1.0, a professional text editor and note taking app for Apple’s iPhone. In March 2014 rumors were all about... Read more
C Spire to offer iPad Air 2 and iPad mini 3,...
C Spire on Friday announced that it will offer iPad Air 2 and iPad mini 3, both with Wi-Fi + Cellular, on its 4G+ LTE network in the coming weeks. C Spire will offer the new iPads with a range of... Read more
Belkin Announces Full Line of Keyboards and C...
Belkin International has unveiled a new lineup of keyboard cases and accessories for Apple’s newest iPads, featuring three QODE keyboards and a collection of thin, lightweight folios for both the... Read more
Verizon offers new iPad Air 2 preorders for $...
Verizon Wireless is accepting preorders for the new iPad Air 2, cellular models, for $100 off MSRP with a 2-year service agreement: - 16GB iPad Air 2 WiFi + Cellular: $529.99 - 64GB iPad Air 2 WiFi... Read more
Price drops on refurbished Mac minis, now ava...
The Apple Store has dropped prices on Apple Certified Refurbished previous-generation Mac minis, with models now available starting at $419. Apple’s one-year warranty is included with each mini, and... Read more
Apple refurbished 2014 MacBook Airs available...
The Apple Store has Apple Certified Refurbished 2014 MacBook Airs available for up to $180 off the cost of new models. An Apple one-year warranty is included with each MacBook, and shipping is free.... Read more
Refurbished 2013 MacBook Pros available for u...
The Apple Store has Apple Certified Refurbished 13″ and 15″ MacBook Pros available starting at $929. Apple’s one-year warranty is standard, and shipping is free: - 13″ 2.5GHz MacBook Pros (4GB RAM/... Read more

Jobs Board

*Apple* Retail - Multiple Positions (US) - A...
Job Description: Sales Specialist - Retail Customer Service and Sales Transform Apple Store visitors into loyal Apple customers. When customers enter the store, Read more
Position Opening at *Apple* - Apple (United...
…customers purchase our products, you're the one who helps them get more out of their new Apple technology. Your day in the Apple Store is filled with a range of Read more
Position Opening at *Apple* - Apple (United...
**Job Summary** At the Apple Store, you connect business professionals and entrepreneurs with the tools they need in order to put Apple solutions to work in their Read more
Position Opening at *Apple* - Apple (United...
**Job Summary** The Apple Store is a retail environment like no other - uniquely focused on delivering amazing customer experiences. As an Expert, you introduce people Read more
Position Opening at *Apple* - Apple (United...
**Job Summary** As businesses discover the power of Apple computers and mobile devices, it's your job - as a Solutions Engineer - to show them how to introduce these Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.