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An OpenJDK developer reported that : --- Whilst trying to debug a printing problem, I noticed that the (Unix and PostScript) printer spoolers in Java do not check what the result is of trying to launch the OS print spooler command (often 'lpr' or 'lp'). As a result, if that exec'd command fails for any reason, that result (and that reason) is lost, and the user left without any clue that something is amiss. ---
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