Transcript Deploying Applications by Using Java Web Start

Deploying Applications by Using
Java Web Start
Copyright © 2004, Oracle. All rights reserved.
Objectives
After completing this lesson, you should be able to do
the following:
• Define the architecture of Java Web Start
• Describe the benefits of using Java Web Start
• Deploy an application by using Web Start
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What Is Java Web Start?
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It is an application deployment technology based
on the Java 2 platform.
It launches full-featured applications via any
browser on any platform, from anywhere on the
Web.
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Running a Web Start Application
1. Request the
application.
2. Launch Web Start on
the local machine.
3. Download the
application.
4. Launch the
application (Draw).
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HTTP
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HTTP
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Advantages of Web Start
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Renders a very responsive and rich user interface
Launches applications from the Start menu on the
desktop
Does not require browser to be running
Allows applications to work offline
Automatically updates applications when invoked
Copyright © 2004, Oracle. All rights reserved.
Examining the JNLP File
The JNLP files defines:
• The location of the application resources
• Information that appears while the application loads
• What the application resources are
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Deploying Applications with JDeveloper
The JDeveloper Deployment Profile Wizard:
• Detects interclass dependencies
• Creates .ear, .war, .jar, or .zip files
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Enables you to have control over other files added
to the deployed archive
Enables you to save deployment profile settings in
project files:
– To simplify redeployment when code changes
– That can be automatically updated with new classes
as they are added to the project
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Creating the Deployment Profile File
Select File > New
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Saving the Deployment Profile
Select a destination and name for the deployment
profile.
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Selecting Files to Deploy
Select the file types to include. Other settings differ for
other deployment profile types.
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Making an Executable .jar File
Set the Main Class field to the class name containing a
main() method, in JAR Options.
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Creating and Deploying the Archive File
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Right-click the Deployment Profile file.
Select the Deploy to menu option.
The .jar file is created in the directory listed in
the deployment properties.
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Using JDeveloper to Deploy an Application
to Java Web Start
Step 1: Generate deployment profiles and archive the
application.
Step 2: Start OC4J and create a connection.
Step 3: Use Web Start Wizard to create JNLP file.
Step 4: Archive and deploy your application to OC4J
server.
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Step 1: Generate Deployment Profiles and
Archive Application
Package all the Java application files into a simple
.jar archive.
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Step 2a: Start OC4J
Use the command line to start the server.
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Step 2b: Creating a Connection
Use the Connection Wizard to create a connection to
the application server. You must specify:
• The type of connection (OC4J)
• The username and password for authentication
• Local URL, target Web site, and local directory for
OC4J
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Step 3: Use Web Start Wizard to Create
a JNLP File
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Specify the Web Start name, application archive
(.jar), and main application class.
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Include information to be displayed to the user
while downloading (for example, application title,
vendor, and brief description)
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Step 4: Archive and Deploy the Application
to the OC4J Server
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Specify properties of the Web components and
deployment description.
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Deploy to the OC4J connection created in step 2.
Run the generated HTML file.
Copyright © 2004, Oracle. All rights reserved.
Summary
In this module, you should have learned how to:
• Describe how a Java Web Start application runs
• Describe the benefits of using Java Web Start
• Use JDeveloper to deploy an application by using
Web Start
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Practice 17: Overview
This practice covers the following topics:
• Archiving your Java application
• Creating a new project to hold the Web Start files
and setting the OC4J server preference
• Installing and starting the stand-alone OC4J
application server
• Creating an application server connection in
JDeveloper
• Archiving and deploying the application files to
OC4J, and testing the application
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