java (n.) Look up java at Dictionary.com
"coffee," 1850, short for Java coffee (1787), originally a kind of coffee grown on Java and nearby islands of modern Indonesia. By early 20c. it meant coffee generally. The island name is shortened from Sanskrit Yavadvipa "Island of Barley," from yava "barley" + dvipa "island." Related: Javan (c. 1600); Javanese (1704).