As eclipse users know, eclipse captures the output of std out and err by default and dumps it into the console that is integrated with the IDE.
I would like eclipse to j
Well, you could probably extend/replace the existing Console view and add an option to write to stdout/stderr.
If you're talking about a Java-program and you want it to open a new console window for stdout/stderr, you will probably have to modify the JDT launcher.
Why would you want to do that? I find it much more convenient to have stdout/stderr in the Eclipse console.