though, I prefer implementingRunnable, and handing an instance of the implementation to aThreadinstance. When having theRunnable's executed by athread poolit is easy to queue up theRunnableinstances until a thread from the pool is idle. This is a little harder to do withThreadsubclasses. ...
To create a control that can have its appearance customized, you must create a control that inherits from theControlclass or one of its subclasses other thanUserControl. A control that inherits fromUserControlis a control that can be quickly created, but it does not use aControlTemplateand you...
TheStyledEditorKitprovidesActionsubclasses to implement editing commands for styled text. You will note that instead of getting the action from the editor kit, this code creates an instance of theBoldActionclass. Thus, this action is not shared with any other text component, and changing its name...
The Order asks each Order Line to calculate its own Price. The Order Line itself further hands off the calculation to the Product; note how we show the passing of a parameter. Similarly, to calculate the discount, the Order invokes a method on the Customer. Because it needs information ...
It is the responsibility of each L&F to provide a concrete implementation for each of theComponentUIsubclasses defined by Swing. For example, the Java Look and Feel creates an instance ofMetalTabbedPaneUIto provide the L&F forJTabbedPane. The actual creation of the UI delegate is handled by Swin...
Custom field types in SharePoint 2007 are pretty darn cool. They allow you to create your own subclasses of the existing SharePoint field types. You can control pretty much every aspect of the fields behavior. Things such as how the field is displayed/rendered in the SharePoints interface, ...
Youdon'tneed a provider to use an SQLite database if the use is entirely within your own application. If you haven't done so already, read the topicContent Provider Basicsto learn more about providers. Next, follow these steps to build your provider: ...
Each individual class in this object model overrides the Draw method of the base class so that it knows how to handle its own drawing; this will allow the final design surface code to just call each element's Draw method, without any knowledge of the specific element type. There is a ...
To only rescue the base exception class, set rescue_subclasses: false. The code below will rescue exceptions of type RuntimeError but not its subclasses. rescue_from RuntimeError, rescue_subclasses: false do |e| error!({ status: e.status, message: e.message, errors: e.errors }, e.statu...
so you don't need to worry about cleaning up any properties that you set in this way. Be careful of overusing "stringly typed" code such as this however, as errors can't be caught at compile time. For heavy customisation, it is better to create cell subclasses and override properties ...