Re: Scripting input from linux to java process

From:

"John B. Matthews" <nospam@nospam.invalid>

Newsgroups:

comp.lang.java.help

Date:

Fri, 26 Sep 2008 21:23:57 -0400

Message-ID:

<nospam-6842EF.21234226092008@news.motzarella.org>

In article
<602a6f77-0938-4e99-998d-344e8604ec3d@k36g2000pri.googlegroups.com>,
"andersonanderson@gmail.com" <andersonanderson@gmail.com> wrote:

Is there anyway to script though a bash script or something alike the
user input to a java process..?

I tried something like

echo "Starting..."
bash /opt/dir/myjavaprocess << EOF
test1
test2
test3

It always seems to just get the first line and then have a lot of
returns or something?

I also tried

(echo "test 1\
test2\
test3
| /opt/dir/myjavaprocess)

and it seemed to do the same thing?

<console>
$ javac FilterStream.java ; java FilterStream < FilterStream.java
/**
* Copy stdin to stdout, byte by byte.
* @author John B. Matthews
*/
import java.io.*;

public class FilterStream {
    public static void main(String[] args) throws IOException {
        BufferedInputStream in = new BufferedInputStream(System.in);
        int c;
        while ((c = in.read()) != -1) {
            System.out.write(c);
        }
    }
}
$ cat test.sh
#!/bin/sh
java FilterStream << EOF
one
two
three
EOF
$ ./test.sh
one
two
three
</console>
--
John B. Matthews
trashgod at gmail dot com
home dot woh dot rr dot com slash jbmatthews