output redirect??

[Ravindra Harige]

cant we redirect the output of javac to a file?
i've tried 'redirect operator' ( > ) but it didnt worked.
is there any alternate...

[Ernest Friedman-Hill]

The error output goes to the standard error stream; redirecting with ">" generally effects only the standard output. The precise syntax for redirecting the error stream (or even if it's possible at all) depends on your OS or shell.

[Ravindra Harige]

hi ernest,
I work on windows XP Pro with SP2 .

[Edwin Dalorzo]

Use the static method setErr(PrintStream err) from the System class.

public static void main(String... args) throws FileNotFoundException{
PrintStream err = new PrintStream(new FileOutputStream("errors.txt"),true);
System.setErr(err);
System.err.println("This will be wirtten to file errors.txt ");
err.close();
}

You can do the same with the default output with setOut(PrintStream out).

Regards,
Edwin Dalorzo

[Ernest Friedman-Hill]

Originally posted by Edwin Dalorzo:
Use the static method setErr(PrintStream err) from the System class.

Yes, for your own applications -- but not terribly useful when running javac.exe , which is what we're talking about here.

Anyway, in XP you can use "2>", as in

javac Foo.java > output 2> errors

[Ravindra Harige]

Hi Ernest,
Thank you. The solution that you provided was exactly what I was looking for and it works just the way I wanted.

regards,
ravindra harige