Redirecting standard error

Hello
I've got:
legacy c code that writes to standard error
JNI c code that calls the legacy stuff
java code that calls the JNI c code
I want to capture standard error and have it available in the java code AND I don't want to redirect stderr to a file and then read that back in.
I tried:
ByteArrayOutputStream capturedStderr;
PrintStream stderrPS;
capturedStderr = new ByteArrayOutputStream();
stderrPS=new PrintStream(capturedStderr);
System.setErr(stderrPS);
hoping that capturedStderr.toString() would give me whatever was written to stderr.
It didn't ;-(
Any suggestions?
Thanks
Mark

When you do System.setErr() all it does is reset err.
What you need to do is reset stderr and I don't believe that is possible solely in java.
I believe you can write JNI to redirect stderr in C to a new file. Then you use that file descriptor to create a new stream in java which is used to call System.setErr().

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