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Java rich internet applications (RIA) are applications that have traits similar to desktop applications, but are deployed via the internet. Java RIAs may be developed and deployed as Java applets or Java Web Start applications.
In the past, the decision of whether to deploy a Java rich internet application inside the browser as an applet, or outside the browser as a Java Web Start application, could significantly impact the design of the application. With the next generation Java Plug-in, this decision has been greatly simplified.
Traditionally, applications construct their user interfaces, including the top-level Frame
, in the main
method. This programming style prevents easy re-deployment of the application in the browser, because it assumes that the application creates its own Frame
. When running in the browser as an applet, the applet is the top level container that should hold the user interface for the application. A top-level Frame
is not needed.
Use component-based architecture when designing your Java rich internet application. Try to organize its functionality into one or more components that can be composed together. In this context, the term "component" refers to a GUI element that is a subclass of the AWT Component
class, the Swing JComponent
class, or another subclass. For example, you could have a top level JPanel
which contains other UI components in it (like a combination of more nested JPanels and text fields, combo boxes etc.). With such a design, it becomes relatively easy to deploy the core functionality as an applet or a Java Web Start application.
To deploy as a Java applet, you just need to wrap the core functionality in an Applet
or JApplet
and add the browser specific functionality, if necessary. To deploy as a Java Web Start application, wrap the functionality in a JFrame
.
The
This trail discusses the development and deployment of RIAs. See the Client JRE Capabilities - Quick Reference page for capabilities introduced in various versions of the client Java Runtime Environment (JRE) software.
Developing and Deploying Java Applets
Developing and Deploying Java Web Start Applications
Doing More With Java Rich Internet Applications
Supporting Tools