PLAAF have a 5 generations

"I would contend that in the past decade or so, China has exceeded most of our intelligence estimates of their military capability and capacity every year. They've grown at an unprecedented rate in those capabilities."
--Admiral Robert F. Willard, Commander, U.S. Pacific Command, October 21, 2009
http://www.strategycenter.net/research/pubID.219/pub_detail.asp

1- J-10B
Yu Xiao-Quan
2009-11-23 15:48:26 Source: Xinhua News Agency
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Xinhua News Agency, Beijing, November 23 (Reporter Sun Maoqing) - Relevant responsible persons of the Air Force 23, said the recent media reports of "four generations of machine" refers to the improved F -10 series aircraft.

For the combat aircraft of the designated representatives of state, the world's major military powers are not consistent. The United States will be highlighted in the low-altitude, sub-transonic maneuverability of the F-15, F-16 fighters are divided into three generations of machines, will feature stealth, supersonic cruise and ultra-mobile performance F-22, F-35 fighter plane is divided into four generations of machines . Russia will be Mig -29, Su -27/30 divided into three generations of fighter aircraft, the Su -35 aircraft, such as an improved third-generation machine is divided into four generations of machines, will have a stealth, supersonic cruise, and a new generation of ultra-mobility fighter plane is divided into five generations.

The official said that China's combat aircraft primarily in the introduction, imitation on the basis of Russian-made equipment, the independent innovation and development, the media calls "four generations of machine" refers to an improved F -10 series aircraft. (End)

J-15/J-13,had its first flight.
http://china-pla.blogspot.com/2010/01/review-of-chinese-aviation-industry-in.html
Chinese designers have reportedly already developed some components, such as landing gear configurations that allow for the higher sink rates required for a carrier-capable aircraft. The J-13 is projected to fly sometime around 2013.
http://theasiandefence.blogspot.com/2009/03/full-steam-ahead-for-chinas-engine.html