Re: Calling .NET exec from Java

From:

=?ISO-8859-1?Q?Arne_Vajh=F8j?= <arne@vajhoej.dk>

Newsgroups:

comp.lang.java.programmer

Date:

Thu, 06 May 2010 22:12:07 -0400

Message-ID:

<4be376e0$0$277$14726298@news.sunsite.dk>

On 06-05-2010 17:33, olegkon wrote:

I need to write a Java program which:
- collects bunch of data from the SQL Server DB (and builds command
line);
- calls windows executable (3rd party, black box, I assume it's
written with .NET 3.5 - maybe VB or C#, but have no source code or
anything)
and passes it long list of parameters.

My Java program will be packaged as executable JAR and reside on some
Windows XP server.
It will be called from job scheduler.
So basically it will be a Java wrapper for that .NET exec.

Could anyone help me with a sample skeleton code to call .NET
executable ?

Sorry, I have no experience with that, I am more of Java/Flex Web
developer.

So suppose I am calling that
Runtime.getRuntime().exec(new String[] {"prog1" "param1" "param2"});

Is there any limitation to the size of that parameters line on Windows
XP ?
I have to pass a huge parameters list, something over 8Kb.

Is that possible ?

If not, how can we overcome it ?

Any code samples ?

The code is as it should be.

(hm - actually you should be using ProcessBuilder instead)

There does not seem to be any guarantees in the documentation.

So I think you should test on your platform with your Java version
what the implementation specific limit happens to be.

(and cross your fingers that next upgrade does not change the
limit)

Arne