tcljava-user

[tcljava-user] Problems instantiating my own class with java::new

[Brian T. <bri...@gm...>]

Does anyone have a simple example using jacl of instantiating a class
you've written using the java::new command?  Or do you know what I'm
doing wrong below?

I'm using precompiled jar files that I downloaded from swank
(http://www.onemoonscientific.com/swank/index.html).


Contents of c:\temp\HelloWorldApp.java:
/**=20
    * The HelloWorldApp class implements an application that
    * simply displays "Hello World!" to the standard output.
    */
class HelloWorldApp {
    public static void main(String[] args) {
        System.out.println("Hello World!"); //Display the string.
        }
}

Transcript from the command-line:

C:\temp>javac HelloWorldApp.java

C:\temp>java HelloWorldApp
Hello World!

C:\temp>java -classpath c:\temp HelloWorldApp
Hello World!

C:\temp>java -classpath c:\temp;jacl.jar;tcljava.jar;swank.jar tcl.lang.Swk=
Shell

% java::new HelloWorldApp
Class "HelloWorldApp" is not accessible
% java::new BogusClass
unknown class "BogusClass"
% java::new java.lang.String hello
java0x2
% exit

I'm trying to figure out why I'm getting the "is not accessible" error
above.  Anyone see what I'm doing wrong?  If it was a classpath issue,
then I would expect to get the "unknown class" error.

Thanks,
Brian Theado

RE: [tcljava-user] Problems instantiating my own class with java::new

[Adrian T. <ah...@te...>]

At first glance, I would say that the HelloWorldApp.java is an =
application
rather than a class. Someone correct me if I am wrong. I haven't touched
Java for 3 years, and I just started to get back into it.

A class would look something like below. The syntax is probably all =
wrong,
but I'm sure you get my drift.

Public class HelloWorldApp {
	//constructor below
	Public void HellowWorldApp {
	// All other codes here.
	}
	// Other methods below
}

-----Original Message-----
From: tcl...@li...
[mailto:tcl...@li...] On Behalf Of Brian =
Theado
Sent: Thursday, June 16, 2005 7:50 PM
To: tcl...@li...
Subject: [tcljava-user] Problems instantiating my own class with =
java::new

Does anyone have a simple example using jacl of instantiating a class
you've written using the java::new command?  Or do you know what I'm
doing wrong below?

I'm using precompiled jar files that I downloaded from swank
(http://www.onemoonscientific.com/swank/index.html).


Contents of c:\temp\HelloWorldApp.java:
/**=20
    * The HelloWorldApp class implements an application that
    * simply displays "Hello World!" to the standard output.
    */
class HelloWorldApp {
    public static void main(String[] args) {
        System.out.println("Hello World!"); //Display the string.
        }
}

Transcript from the command-line:

C:\temp>javac HelloWorldApp.java

C:\temp>java HelloWorldApp
Hello World!

C:\temp>java -classpath c:\temp HelloWorldApp
Hello World!

C:\temp>java -classpath c:\temp;jacl.jar;tcljava.jar;swank.jar
tcl.lang.SwkShell

% java::new HelloWorldApp
Class "HelloWorldApp" is not accessible
% java::new BogusClass
unknown class "BogusClass"
% java::new java.lang.String hello
java0x2
% exit

I'm trying to figure out why I'm getting the "is not accessible" error
above.  Anyone see what I'm doing wrong?  If it was a classpath issue,
then I would expect to get the "unknown class" error.

Thanks,
Brian Theado


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Re: [tcljava-user] Problems instantiating my own class with java::new

[Brian T. <bri...@gm...>]

On 6/16/05, Adrian Tan <ah...@te...> wrote:
[..]
>=20
> A class would look something like below. The syntax is probably all wrong=
,
> but I'm sure you get my drift.
>=20
> Public class HelloWorldApp {
>         //constructor below
>         Public void HellowWorldApp {
>         // All other codes here.
>         }
>         // Other methods below
> }
>=20

Thanks for the tip.  It seems the problem was that my class wasn't
declared as public.  The following code works:

public class HelloWorldApp {
    public static void main(String[] args) {
        System.out.println("Hello World!");
    }
}

C:\temp>java -classpath c:\temp;jacl.jar;tcljava.jar;swank.jar tcl.lang.Swk=
Shell

% java::call HelloWorldApp main [java::null]
Hello World!
% java::new HelloWorldApp
java0x2
%