why nio java use pipe instead of wait/notify to communication in multi thread? [closed]

why nio java use pipe instead of wait/notify to communication in multi
thread? [closed]

References

Reference NO 1

http://stackoverflow.com/questions/15204544/why-nio-java-use-pipe-instead-of-wait-notify-to-communication-in-multi-thread

Reference NO 2

http://stackoverflow.com/questions/9922658/how-to-notify-pipedinputstream-thread-that-pipedoutputstream-thread-has-written

Reference NO 3

http://www.onjava.com/pub/a/onjava/excerpt/javanut4_ch04/?page=2

Reference NO 4

http://www.slideshare.net/jaxlondon2012/java-and-the-machine-martijn-verburg-and-kirk-pepperdine

Reference NO 5

http://en.wikibooks.org/wiki/Serial_Programming/Serial_Java

Reference NO 6

http://www.forward.com.au/javaProgramming/HowToStopAThread.html

Reference NO 7

http://www.javacodegeeks.com/2012/08/io-demystified.html

Reference NO 8

http://mindprod.com/jgloss/threadsafe.html