Is it possible to execute .bat file located in package ?

Question

Hi,
in my application i execute a print.bat file using Runtime.exec(), i'd like to place this .bat in package, let's say com.me.testpackage. How is it possible to execute the batch file from that location?
thanks

Answer 1

jschell wrote:
sabre150 wrote:
jschell wrote:
>Simple 'for' loops seem to work OK but still more research needed.
There is escaping in the for loops which is necessary in a bat file and not needed at the command line.
It seem to be that any command spanning more than one line fails. Fail? The example that gave shouldn't fail. It should simply run both echos.As I understand it, the command sequence
@echo off
goto XXX
echo out
:XXX
echo last
should just output 'last' and not 'out so if it prints both 'out' and 'last' then in my view it 'fails'. Am I missing something?
>
>>
Makes me even more pleased that I work mainly with Linux.Looking up syntax - what about getopts (bourne and korn)? You can also create 'functions', which can be defined later (if I recall correctly) in the script and called multiple times. I don't know how that would work streaming it in.I don't know about consequences of the streaming approach forward definitions in 'bourne' and 'korn' though I was not aware that 'bourne' allowed them. For 'bash' where forward definitions do not seem to be allowed (could I be mistaken in this?) then using        Process process = Runtime.getRuntime().exec("bash", null, new File(System.getProperty("user.home")));the following very simple 'bash' script (which contains loops, if statements and functions but no goto or forward definitions) can be executed without problems - # Simple bash script
function sayHello {
    echo "Hello" $1
sayHello "World" ;
for i in $( ls /tmp ); do
    echo file - $i
done
for i in `seq 1 10`;
do
    echo "seq" $i
done
i=0
while [  $i -lt 6 ]; do
if [ $i -eq 4 ]; then
    echo "then" $i
else
    echo "else" $i
fi
    let i=i+1
done
i=12
until [  $i -lt 10 ]; do
echo "until" $i
let i-=1
doneIn the past, I have also published examples of how to run Perl scripts using the same basic approach. The heart of the examples is         final String perlScript = "#!/bin/perl\n" +
            "print \"PID $$\\n\";\n" +
            "print \"UID $<\\n\";\n" +
            "print \"EUID $>\\n\";\n" +
            "print \"GID $(\\n\";\n" +
            "print \"\\nProcessing the command line arguments\\n\";\n" +
            "foreach (@ARGV) {\n" +
            "    $n = factorial($_);\n" +
            "    print \"    $_! = $n\\n\";\n" +
            "}\n" +
            "print \"\\n\".'@INC'.\"\\n\";\n" +
            "foreach (@INC) {\n" +
            "    print \"    $_\\n\";\n" +
            "}\n" +
            "print \"\\n\".'%ENV'.\"\\n\";\n" +
            "foreach (keys %ENV) {\n" +
            "    print \"    $_==$ENV{$_}\\n\";\n" +
            "}\n" +
            "$x = theAnswerToTheUltimateQuestion();\n" +
            "print \"\\nThe answer to the ultimate question is ... '$x'\\n\";\n" +
            "sub theAnswerToTheUltimateQuestion()\n" +
            "{\n" +
            "    return 3*2*7;\n" +
            "}\n" +
            "sub factorial()\n" +
            "{\n" +
            "    my ($n) = @_;\n" +
            "    return ($n > 1) ? $n * factorial($n-1) : 1;\n" +
            "}\n";
        System.out.println(perlScript);
         * The perl source can be from any InputStream. Here I use a
         * ByteArrayInputStream just as a demonstration.
        final InputStream perlSource = new ByteArrayInputStream(perlScript.getBytes());
         * The '-' indicates that the Perl script comes from stdin. The "a","b","c" etc
         * are the command line arguments passed to the Perl script.
        final String[] command =
            "perl", "-", "5", "6", "7", "8", "9", "10"
        final Process process = Runtime.getRuntime().exec(command);piping the 'perlSource' stream to the process stdin.
This runs as expected on both Linux (FC9 and Ubuntu 8.04) and on Windows using Active Perl.
Please don't take my use of a String to hold the Perl script to mean that I in any way endorse this approach - I just wanted a simple means to create a self-contained example.
>
And the c shell has a goto also.One day I might find some time and investigate 'c' shell goto in this context - since I have not used csh for at least 8 years I am very rusty.
I can't say that the 'streaming' approach will work with all Linux shells but I can say that on Linux I have had no problem with Perl and Bash. If anyone needs to use the 'streaming' approach with another shell then it takes just a few minutes to setup a test harness. If any problems are found then people can always resort to the 'Plan B' approach.
I am still pleased I work mainly with Linux and Unix.