Java applet which contains several classes

[Rodie]

Hi all !

I write a Java applet which is an application containing many classes in several folders (or packages). My problem is that only the startup class seem to work.

I mean the "main class" is launched at the launching of the applet, but all the classes it calls does not run.

I also would like to know if all the classes of the application have to extends the "Applet" class ...

Thanks if you have any idea

 

[Diancecht]

Maybe if you post the error you get we can offer some help.

One idea is that those classes must be in the classpath.

Cheers,

Dian

 

[Rodie]

Hi Dian,

Thanks for ur reply. Actually I cannot have any error while executing. Indeed, my applet creates a socket to a server for communication.

If I open the socket from the "applet class" (I mean the class which is launched in the Web browser), I see that the server accept this connection.

But if I open the socket in another class (which is instantiate by the "applet class"), the server does not see anything. So the problem is that nothing happens.

And I know that if I execute my application as a Java application (not applet), all work well. So I think there is no problem of classpath. Am I wrong ?

Thanks again

 

[sedj]

Is your applet signed ?

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http://www.primrose.org.uk

 

[Rodie]

I'm stupid

I did not realize that apparently the HTML page download only the "applet class" specified in the <APPLET> tag and not all the source files. I have to use a JAR file, or something like that ...

That to you !!

 

[Rodie]

To create a JAR file, I have to write this command line :
[blue]jar cf archive_name.jar files[/blue]

I tried to write this command in Windows cmd.exe (Programs->accessories->command prompt), but the "jar" keyword is unknown ...

I can't figure out if it's the proper place to write this. Where else ??

Thanks for your help !

 

[sedj]

You need to set your PATH environment variable to point to the bin directory in your JDK.

--------------------------------------------------
Free Database Connection Pooling Software

http://www.primrose.org.uk

 

[Diancecht]

Humm, I've been "jaring" files from command line for years.

In the new era, isn't there any "winjar" tool that does that for you?

Cheers,

Dian

 

[sedj]

You don't need it - the file JAVA_HOME\bin\jar.exe is all you need.

--------------------------------------------------
Free Database Connection Pooling Software

http://www.primrose.org.uk

 

[Rodie]

It's weird because I have no jar.exe on my computer ...
I use Eclipse, and apparently with [red]jre1.5.0_02[/red]. There is a "bin" and a "lib" directory in it, but no jar.exe there. Is this normal ?
Thanks guys !

 

[timw]

The jar.exe tool only comes with a JDK, not a JRE.

Tim
---------------------------
"Your morbid fear of losing,
destroys the lives you're using." - Ozzy

 

[sedj]

If you only have a JRE then how the heck are you compiling code ? Eclipse must come with its own JDK.

Type this in DOS :

dir C:\jar.exe /s

and use that exe ... or download a JDK and install it.

--------------------------------------------------
Free Database Connection Pooling Software

http://www.primrose.org.uk

 

[Rodie]

Indeed, I have not jar.exe
Actually, I can create a jar file inside Eclipse. It works but it's not totally reliable (just read that on the Web)

If I download JDK, the pre-existing Eclipse I have won't work with it, but still with its JRE, right ? So I have to install a new Eclipse no ?

Thanks to you

 

[sedj]

I don't use Eclipse - so not really sure. I believe there is an Eclipse forum here somewhere.

--------------------------------------------------
Free Database Connection Pooling Software

http://www.primrose.org.uk