I\'m trying to read temperature data from a DHT11 temperature sensor, using pi4j. I followed the code written in c and python in this site:
http://www.uugear.com/portfolio/dht11
If you're always getting a High State it might be good to double check if the wiring is correct (or if any of the wires are broken, test it with a led).
I've used adafruit's tutorial in C and python and it worked on my DHT22.