[EMAIL PROTECTED] wrote:
> I'm doing one interface in java that will call some perl scripts. I need to
> catch the output and I don't know how to do it.
>
> If I execute the 'ls' command my java program finnish if I call the perl my
> program don't finnish. What am I missing?
What are you expecting from your call to Perl? Note that shelling out has the
same dangers with Java as with Perl.
>
>
> import java.io.DataInputStream;
> import java.io.IOException;
>
> public class Test {
> public static void main(String[] args) {
> try {
> Runtime r = Runtime.getRuntime();
>
> String[] aStr = {"-e", "'print(\"Ola\n\") foreach (1..100);'"};
>
> Process p = r.exec("perl", aStr);
You told the system to open the perl compiler here. You may also have Offered
it 100 lines like this:
"Ola
""Ola
Which Perl would have a very hard time interpreting as code.
>
> //Process p = r.exec("ls");
>
> DataInputStream strm = new DataInputStream(p.getInputStream());
>
> String str;
> while ((str = strm.readLine()) != null){
> System.out.println(str);
> }
> } catch (IOException e) {
> e.printStackTrace();
> }
> }
> }
>
> Thanks
> Marcos
The code above is straight Java. Although it does inicdentally call the Perl
interpreter, it is not presented with any further directions, and therefore does
nothing. It is probably not the right place to discuss the Java Runtime::exec
function. That would be more appropriate on a Java list [use Google to find
one] For what it is worth, perl is generally called with a script name or code
as the first parameter..
Please learn how to use each language well on its own before you try to develop
cross-platform programs.
Joseph
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