问题和练习：Applets

问题

1. Which classes can an applet extend?

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

3. 对或错: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. 对或错:Applets can modify the contents of the parent web page.

练习

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.

检查一下你的答案。