Final answer:
Rice farming in Java is intensive and commercial, with farmers focusing on a small number of crops and using intensive methods to generate surplus for trade.
Step-by-step explanation:
Rice farming in Java is best described as intensive and commercial. Farmers in Java focus on a small number of crops, mainly rice, and use intensive methods such as plowing, irrigation, and repeated use of the same plots. The surplus generated from intensive agriculture is traded in markets for other goods and resources.