Why might BufferedReader fail running an external app?
I have a Process p that runs an external program with BufferedReaders attached to p.getInputStream and p.getErrorStream. The external app (PostgreSQL pg_dump) outputs a password prompt (Password: ) without a carriage return on stderr. This works fine from the Windows command line. In the Java app, the BufferedReaders wait for ready() = 'true' and then are read character-by-character. However, neither stdout or stderr is ever ready() = 'true' and when I exit, the code throws an exception that the Process hadn't terminated. The small app that I wrote tries the read three times, with short timeouts in between. It works with ipconfig and all the PostgreSQL utilities except those that write error messages or a prompt. If it shows up on the screen when the utility is run from the command line, why not in the Java app?
