Re: Command-line options in a jar file

=?ISO-8859-1?Q?Arne_Vajh=F8j?= <>
Sat, 21 Apr 2012 22:05:17 -0400
On 4/21/2012 5:27 PM, Hiram Hunt wrote:

"Lew"<> wrote in message

On 04/21/2012 12:11 PM, Hiram Hunt wrote:

#jar cfe hi.jar hi.HelloWorld hi\HelloWorld.class -J-showversion
java version "1.7.0_03"
Java(TM) SE Runtime Environment (build 1.7.0_03-b05)
Java HotSpot(TM) Client VM (build 22.1-b02, mixed mode, sharing)

#ftype jarfile
jarfile="C:\Program Files\Java\jre7\bin\java.exe" -jar "%1%" %*

Hello, world


Is there a way to (in this example) get the version information
to show up when running hi.jar instead of when running jar itself?

Version of what? Java itself, as you show here? What's wrong with using
the "java" command for that?

I used -version to demonstrate the problem I was having getting a
command-line option to be saved in a jar file for use when the
jar file is executed. The specific option I used for the demonstration
was just a convenient example, because the results can easily be
seen. As I said before, the options I actually care about (today, anyway)
are -Xmxn and -Dthis=that (with appropriate values to be substituted
for "n" and "this=that").

Executable jar files does not support JVM args in manifest.

You options are:
1) specify the JVM args in the command line (does not work with
    double click)
2) write a startup script (this is very common)
3) write your own startup executable that create the JVM with
    the args you want (requires a build per supported platform)


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