tcljava-user

Re: [tcljava-user] running java code

[Jim M. <thi...@ya...>]

hi-
i thought about this after i took a break.  if it says it has an embedded
jvm. so that means to me that if on the development machine i create
the byte code then the embedded jvm can turn the byte code into
machine code and then execute it.

so it seems there is no jre needed on the deployment machine.

this seems cool as you could use groovy too.  i wonder if i could use a db
that works with groovy? i'll have to check into that.

please let me know if i got it right. 
thank you,
jim

       
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Re: [tcljava-user] running java code

[Jim M. <thi...@ya...>]

hi Patrick - 
i just went to the first link and saw you were using oracle
with a JDBC driver.  I use windows O/S.
i remember there was oratcl.
i am hoping there is oratcl is embedded like
apache derby can be or i might be able
to use apache derby.  but my first thoughts  on
that is it might be easier to use  a jdbc db  that tcl
already has bindings for. not sure yet.
 what i am going to investigate
right now is the requirements for using groovy
and how that relates to this. i just checked that.
1.4 or greater is ok.  i am used to 1.5 but i could
probably pick up a used 1.4 manual.
this sounds really cool so far.
thanks for the great links and assistance,
jim

       
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Re: [tcljava-user] running java code

[Mo D. <mo...@mo...>]

Jim McNamara wrote:
> hi-
> i thought about this after i took a break.  if it says it has an embedded
> jvm. so that means to me that if on the development machine i create
> the byte code then the embedded jvm can turn the byte code into
> machine code and then execute it.
>
> so it seems there is no jre needed on the deployment machine.
This is not correct, a JVM is needed on the deployment machine. In 
general, Java is an interpreted
runtime. The hotspot compiler will speed up execution time but a JVM is 
still needed at runtime to
execute Java code. The Tcl Blend module makes it easy to create both a 
Tcl interpreter and a Java
interpreter in the same process and then let each interpreter talk to 
the other.

cheers
Mo DeJong