Meaning

noun an island in Indonesia to the south of Borneo; one of the world's most densely populated regions

noun a beverage consisting of an infusion of ground coffee beans

noun a platform-independent object-oriented programming language

originBorrowed from Javanese Jawa, via Franco-Italian and Latin, possibly from Sanskrit यव-द्वीप (yava-dvīpa, “island of barley”), used in reference to the coffee grown on Java and nearby islands since at least 1850. The programming language (initially called Oak) is a reference to java, the blend of coffee from the island.

Etymology from Wiktionary, CC BY-SA 3.0