Question

I am using Windows!

I want to call a small .exe application from my java command line which is called “saucy.exe”. It needs an input file “input.saucy”. Both are stored in the correct directory.

When I use the command

Process p = Runtime.getRuntime().exec("saucy input.saucy");

everything works fine and I get an output on the console.

However, when I try to write the output in a file

Process p = Runtime.getRuntime().exec("saucy input.saucy > output.saucy");

nothing happens.

I already found the advice in http://www.ensta-paristech.fr/~diam/java/online/io/javazine.html and tried to tokenize the command manually:

String[] cmd = {"saucy", "input.saucy > output.saucy"};
Process p = Runtime.getRuntime().exec(cmd);

It is still not working. Any advice? It is no option for me to write the output to a file with java code, because its too slow.

Again: I am using Windows (I stress that because I read several hints for Linux systems).

Answer 1

> is a shell command, but you are not using one. try

String[] cmd = { "cmd", "/C", "saucy input.saucy > output.saucy" };