Small help is needed

Question

hi guys
I have a small perl prgram which accept two number and print their sum.
the following is perl program.
$y=<>;
$x=<>;
chomp($y);
chomp($x);
$sum=$x+$y;
print $sum;
when I run it from prompt. It waits for the user to enter two numbers and the print their sum.
now I would like to execute this program from java using exec command.
how I can pass the two numbers to the program
I tried the following but DOES not work
Runtime.getRuntime().exec("perl example.pl 8 9 ");
any help

Answer 1

Mmmmm.......research.......
The use of STDIN is one way to get information interactively from a user. For some purposes though the use of command-line arguments may be more convenient. What happens here is that a user runs the script with certain arguments after the script name:
perl my_script.pl 34 66 dallas
and the arguments 34, 66, and dallas are captured and subsequently used in your program. How this can be done with Perl is through the use of a special array called @ARGV which Perl will create when the script is run; the elements of @ARGV are the command-line arguments used (if any) when the script was invoked. For example, if we had a script
for my $arg (@ARGV) {
print qq{You passed in $arg\n};
and ran it as perl my_script.pl 34 66 dallas, then we would find as output
You passed in 34
You passed in 66
You passed in dallas