Applets

When I reload my applet my hidden canvas is shown directly! Why?

Answer: Put mycanvas.setVisible (false); in Start() rather than init()...

I want to be able to print debugging text messages during the whole applet s lifetime. Is there an

easy way to do that???

Q: I m a beginner in java. Right now i am doing an applet and i want to

write messages to the browser window for debugging purposes i.e. to

follow how the applet executes. Like when i m developing an C++

application i usually use lots of "couts" to check values and the

programs behavior. Is there an easy way to do things like that when

making a Java applet? For me it seems like everything happens in a

function called "paint(graphics g)" and that function is only called at

the beginning of the applet start. I want to be able to print text

messages during the whole applet s lifetime. Is there an easy way to do

that???

Answer: you d be better off doing a

System.out.println("the value is " + whateverValue);

This will show up in the java console. to see it in ie5, do View >Java Console, and in netscape4.7, do

Communicator >Tools >Java Console and it will pop up the java console window.

If you are doing it in appletviewer from dos, it will show up in the dos window you used to call

appletviewer.

 What are restrictions for applet?

Q: What are applets prevented from doing?

Answer: In general, applets loaded over the net are prevented from reading and

writing files on the client file system, and from making network connections

except to the originating host.

In addition, applets loaded over the net are prevented from starting other

programs on the client. Applets loaded over the net are also not allowed to

load libraries, or to define native method calls. If an applet could define

native method calls, that would give the applet direct access to the

underlying computer.

Q: I am writing an applet that will use images. I would like to ship out the images using a jar file

that contains all the images that the applet is going to use. I have seen a piece of code that does that

in the past, but I don t remember where.

Answer: by David Risner  The following is from:

http://developer.netscape.com/docs/technote/java/getresource/getresource.html

import java.applet.*; 

import java.awt.*; 

import java.io.*; 

public class ResourceDemoApplet extends Applet { 

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