Japan is willing to develop friendly cooperation with China and other nations in the region in various fields to advance the establishment of an East Asian community, he said.
Hatoyama said Japan is willing to work with China and translate the East China Sea into an area of friendship and cooperation.
He said the Japanese side appreciated what China has done over the dumpling poisoning issue and would like to promote food safety.
He added that Japan would also like to strengthen cooperation with China in environmental protection technologies and in climate change. Japan hopes to share experience with China in promoting low-carbon economy, he said.
Hu and Hatoyama met on the sidelines of the Nuclear Security Summit slated for Monday and Tuesday.
The Nuclear Security Summit is mainly aimed at preventing acts of nuclear terrorism.
The White House said leaders or their representatives from 47 countries as well as the United Nations, the International Atomic Energy Agency and the European Union would participate in the summit.