Trail: Deployment
Lesson: Applets
Applets
Getting Started With Applets
Defining an Applet Subclass
Methods for Milestones
Life Cycle of an Applet
Applet's Execution Environment
Developing an Applet
Deploying an Applet
Deploying With the Applet Tag
Doing More With Applets
Finding and Loading Data Files
Defining and Using Applet Parameters
Displaying Short Status Strings
Displaying Documents in the Browser
Invoking JavaScript Code From an Applet
Invoking Applet Methods From JavaScript Code
Manipulating DOM of Applet's Web Page
Writing Diagnostics to Standard Output and Error Streams
Sending Messages to Other Applets
Working With a Server-Side Application
Network Client Applet Example
What Applets Can and Cannot Do
Solving Common Applet Problems
Questions and Exercises
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Questions and Exercises: Applets

Questions

  1. Which classes can an applet extend?

  2. For what do you use the start() method?

  3. True or false: An applet can make network connections to any host on the internet.

  4. How do you get the value of a parameter specified in the JNLP file from within the applet's code?

  5. Which class enables applets to interact with JavaScript code in the applet's web page?

  6. True or False: Applets can modify the contents of the parent web page.

Exercises

  1. The Exercise applet's parent web page has a JavaScript variable called memberId. Write the code to set the value of the memberId equal to "123489" in the applet's start method.
Check your answers.
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