330 Java Tips.pdf - FTP Server

Applets
Answer: You will occasionally need to allow two or more applets on a Web page to communicate with
each other. Because the applets all run within the same Java context-that is, they are all in the same
virtual machine together-applets can invoke each other's methods. The AppletContext class has
methods for locating another applet by name, or retrieving all the applets in the current runtime
environment
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import java.applet.*;
import java.awt.*;
import java.util.*;
// This applet demonstrates the use of the getApplets method to
// get an enumeration of the current applets.
public class ListApplets extends Applet {
public void init() {
// Get an enumeration all the applets in the runtime environment
Enumeration e = getAppletContext().getApplets();
// Create a scrolling list for the applet names
List appList = new List();
while (e.hasMoreElements()) {
// Get the next applet
Applet app = (Applet) e.nextElement();
// Store the name of the applet's class in the scrolling list
appList.addItem(app.getClass().getName());
}
add(appList);
}
}
I hope that did it!
by 11037803
Here are some useful links on applet to applet communication. I don't know if they will solve your
problem but these are a variety of good approaches for this type of issue.
http://www.javaworld.com/javaworld/javatips/jw-javatip101.html
http://www.twf.ro/calculatoare/TricksJavaProgramGurus/ch1.htm
http://www.galasoft-lb.ch/myjava/CommTest/backup00/
http://www.rgagnon.com/javadetails/java-0181.html
http://www.2nu.com/Doug/FAQs/InterframeIAC.html
by Mickey Segal
Q: I would like to ask if there 's anyway that I can use the same program run as an applet or
application?
Answer: You would have to provide at least a main() for the application part, and init(), start(), stop(),
destroy() for the applet part of your program. Your class could simply display the applet within a
Frame.
Example:
class Foo extends Frame {
public Foo(String title){
//...
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