Re: Batch file params

Andrew Thompson wrote: 
On 27 Aug 2005 04:40:52 -0700, iblamemicrosoft@xxxxxxxxx wrote:

I know how in html files you can simply go:

<param name="number" value="1">

but how can you replicate this in a batch file? 

For an application, you can provide arguments on the
command line when you invoke Java, like..

java TheMainClass arg1 arg2 arg3

From a programmer point of view it tends to be easier to pass arguments as properties. It's also a handy technique if you have lots of classes with main methods and your IDE can set properties for all of them.

java -Dnumber=1 -jar MyApp


        String number = System.getProperty("number");

In 1.0 and from 1.5 you can also read environment variables through System.getenv.

#!/bin/bash
export MYAPP_NUMBER=1
java -jar MyApp


        String number = System.getenv("MYAPP_NUMBER");


http://java.sun.com/j2se/1.5.0/docs/tooldocs/solaris/java.html#options
http://java.sun.com/j2se/1.5.0/docs/api/java/lang/System.html#getProperty(java.lang.String)
http://java.sun.com/j2se/1.5.0/docs/api/java/lang/System.html#getenv(java.lang.String)

Tom Hawtin
--
Unemployed English Java programmer
http://jroller.com/page/tackline/
.