jGuru: AWT FAQ Home Page

Forgot your
password?

HOME

FAQS

FORUMS

DOWNLOADS

ARTICLES

PEERSCOPE

LEARN

Search

AWT FAQ Home Page

FAQ Manager is guru Sandip Chitale PREMIUM.

As part of the Java Foundation Classes (JFC), the Abstract Window Toolkit (AWT) is the foundation graphical user interface (GUI) for all Java-based programs.

What's New

When dropping an object over a JTree, how do you determine the node being dropped over?
Java:API:AWT:Drag and Drop, Java:API:Swing:Widgets
John Zukowski PREMIUM, May 31, 2007
The importData() method of your TransferHandler has a TransferSupport argument. From this support object, you can ask for the drop location with getDr...

When having a droppable JTree, how do I change the default behavior of using selection to see the active drop target?
Java:API:AWT:Drag and Drop, Java:API:Swing:Widgets
John Zukowski PREMIUM, May 31, 2007
JTree has a setDropMode() method to change the default setting of USE_SELECTION. Other valid modes are ON, INSERT, and ON_OR_INSERT. ON lets you drop something...

What accessible roles were added to the 1.4 J2SE accessibility API?
Java:API:AWT:Accessibility, Java:API:Swing:Accessibility
John Zukowski PREMIUM, Dec 31, 2006
Class AccessibleRole Added the following constants: DATE_EDITOR FONT_CHOOSER GROUP_BOX SPIN_BOX STATUS_BAR

How can I find out if my application is being used with a screen magnifier?
Java:API:AWT:Accessibility, Java:API:Swing:Accessibility
John Zukowski PREMIUM, Dec 31, 2006
The javax.accessibility.screen_magnifier_present property is available. When true, the magnifier is present, and your application can be altered accor...

Which accessible interfaces were added for J2SE 1.4?
Java:API:AWT:Accessibility, Java:API:Swing:Accessibility
John Zukowski PREMIUM, Dec 31, 2006
The 1.4 API increased the accessibility API by adding the following: javax.accessibility.AccessibleEditableText javax.accessibility.AccessibleExt...

What is the purpose of AccessibleExtendedComponent?
Java:API:AWT, Java:API:Swing
John Zukowski PREMIUM, Dec 4, 2006
The original accessible API set missed some features in the AccessibleComponent interface. Since the main interface couldn't be altered, Sun introduced...

How do I explicitly set the Toolkit for my program?
Java:API:AWT:Graphics
John Zukowski PREMIUM, Nov 3, 2006
Either by setting the AWT_TOOLKIT environment variable or the awt.toolkit system property. The AWT_TOOLKIT environment variable can be set to XToolkit...

What this I hear about a new Toolkit for Linux machines in Java 5.0?
Java:API:AWT
John Zukowski PREMIUM, Nov 3, 2006
J2SE 5.0 reimplemented the AWT Toolkit to remove the Motif and Xt dependency and improve performance. Solaris still keeps the Motif default but Linux machines...

Should I use the invokeLater() and invokeAndWait() method of EventQueue or SwingUtilities?
Java:API:AWT:Events, Java:API:Swing:Events
John Zukowski PREMIUM, Jan 22, 2006
Short answer: EventQueue. Longer answer... Utility methods were added to the SwingUtilities class because the first version of the Swing classes had...

I want the user to be able to input tabs in my application, but the tab character moves the input focus to the next component in the app and my application's keylistener gets nothing. Is there any way...
Java:API:AWT:Events
Nils Christian Svihus, Jan 14, 2006
The tab is a focus traversal key by default and you have to change this to catch the tab entries in your keylistener. You do this by overriding the Component...

How can I write a GIF image?
Java:API:AWT:Graphics, Java:API:Media:Image I/O
John Zukowski PREMIUM, Jan 12, 2006
Patent restrictions didn't allow a GIF writer to be part of the Java platform prior to JDK 6. With the recent expiration of the Unisys patent, JDK 6 includes...

How do I use the default mail client to send an email?
Java:API:AWT, Java:API:JavaMail
John Zukowski PREMIUM, Dec 5, 2005
The Java 6 Desktop class has a mail() method for just such an action.

How can I place my Java app in the Windows System Tray area?
Java:API:AWT
John Zukowski PREMIUM, Dec 5, 2005
Java 6 offers a SystemTray class for this. Users of prior versions of Java can add this through the JDesktop Integration Components (JDIC) available from...

After adding a bunch of points to a Polygon, can I reuse it or must I create a new one?
Java:API:AWT:Graphics
John Zukowski PREMIUM, Nov 1, 2005
You can call reset() to remove the existing set of points from a Polygon. With that said, according to the javadoc: All internally-cached data relating...

How do I test my program for how accessible it is?
Java:API:AWT, Java:API:Swing
John Zukowski PREMIUM, Jul 1, 2005
Sun provides the Java Access Bridge for Microsoft Windows users, with programs like Monkey and Ferret to see how well you've designed your graphical programs...

I'm using setComponentZOrder() to have overlapping components but the last component I click on is always drawn on top. How do I fix this?
Java:API:AWT:Layouts
John Zukowski PREMIUM, Jun 30, 2005
When components overlap, be sure their container returns false from the isOptimizedDrawingEnabled() method that is inherited from JComponent. This ensures...

How can I control the Z-order that my overlapping components are drawn in?
Java:API:AWT:Layouts
John Zukowski PREMIUM, Jun 30, 2005
The Container component in the java.awt package provides two methods: setComponentZOrder(Component c, int layer) and getComponentZOrder(Component c). ...

What is z-order?
Java:API:AWT:Layouts
John Zukowski PREMIUM, Jun 30, 2005
To understand z-order, think first of x and y positioning. The x-y coordinate space places position (0, 0) at the top-left corner of the screen. Increasing...

How do I create a Graphics object?
Java:API:AWT:Graphics
Scott Stanchfield, Dec 28, 2001
The initial answer is "you don't; AWT does". Graphics objects are your "window" into an image, whether that image is onscreen or offscreen. If you're...

How can I perform a task while the mouse is pressed, stopping when the mouse is released?
Java:API:AWT:Events
Scott Stanchfield, Dec 28, 2001
The "trick" is to create a new thread that performs the task while the normal event thread watches for the mouse release. If you perform the mouse-pressed...

« previous

beginning

Related Links

AWT Forum

Sun's AWT Home Page

The Java Tutorial (Good AWT & Swing Coverage)

Effective Layout Management

Layout Manager Launch

Creating a Custom Layout Manager

Drag and Drop resources

Wish List
Features
About jGuru
Contact Us

Search:

Jupitermedia Corporation has two divisions: Jupiterimages and JupiterOnlineMedia

Jupitermedia Corporate Info

Legal Notices, Licensing, Reprints, & Permissions, Privacy Policy.

Advertise | Newsletters | Tech Jobs | Shopping | E-mail Offers

Whitepapers and eBooks
ServerWatch.com Article: Virtualization Enters the SMB World ITChannelPlanet.com Article: Emerging E-Discovery Market Grows More Vital for VARs StoreVault Whitepaper: Introduction to Networked Storage Oracle eBook: Implementing Business Intelligence in Your Organization Hoovers Sales Tip: Building Credibility with New Clients SAP Whitepaper: A Corporate Guide to Better Decisions Through IT Microsoft Article: Flexibility, Agility the Keys to Dynamic IT Microsoft Article: Improving Infrastructure Management for Mid-Size Companies IBM Whitepaper: CIO Insights--Ignite Innovation by Fusing Business and IT IBM Whitepaper: Transforming Legacy Apps into SOA Internet.com eBook: All About Botnets Intel Article: 8 Simple Rules for Designing Threaded Applications Symantec Whitepaper: E-Mail Discovery--Worst-Case Scenarios Versus Best Practices		Ipswitch Whitepaper: Secure File Transfer In the Era of Regulatory Compliance Symantec Whitepaper: A Unified, Proactive Approach to Endpoint Security APC eBook: Putting the Green in IT Intel Whitepaper: Best Practices for Developing and Optimizing Threaded Applications Symantec Whitepaper: Emerging Trends in Fighting Spam Oracle eBook: Guide to Oracle 11g and Database Migration Symantec Whitepaper: Best Practices for IM Archiving & Compliance Intel Article: The Challenges of Developing Multithreaded Processing Pipelines Avaya Whitepaper: SIP--Creating Next-Generation Telecom Applications Avaya Article: Event Processing Demands Real-Time Response for Communications-Enabled Business Apps MessageLabs Whitepaper: Spam Spikes--A Real Risk to Your Business Symantec Article: Guarding the Corporate Gateway MORE WHITEPAPERS, EBOOKS, AND ARTICLES

Webcasts
Epicor Webcast: Requirements to Consider When Looking at ITSM Tools Intel Video: Three Must-Knows for Parallelism Microsoft: NXT Web Seminar Series Microsoft Partner Program Video: The Secrets to Partner Success		Rational Asset Manager: Succeed with Asset-based Development Microsoft Silverlight Video: Creating Fading Controls with Expression Design and Expression Blend 2 MORE WEBCASTS, PODCASTS, AND VIDEOS

Downloads and eKits
NXPowerLite: Desktop Edition Software Trial IBM Rational Systems Development Solution e-Kit IBM SOA Development Survival Guide eKit Evaluate IBM Rational Build Forge Online IBM Enterprise Architect eKit for SOA		Evaluate Rational Application Developer Online Iron Speed Designer Application Generator Symantec IM Detection Utility MORE DOWNLOADS, EKITS, AND FREE TRIALS

Tutorials and Demos
IBM Overview Video: Next Generation Data Warehousing IBM Tutorial: Intro to XML User Interface Language (XUL) Development Microsoft How-to Article: Get Going with Silverlight and Windows Live IBM Tutorial: The Ajax Transport Method		IBM Tutorial: Learning PHP IBM Tutorial: Validating XML MORE TUTORIALS, DEMOS AND STEP-BY-STEP GUIDES