Indonesian island; programming language (4)
I believe the answer is:
java
I believe this clue is a double definition.
'indonesian island' is the first definition.
(I've seen this before)
'programming language' is the second definition.
(I've seen this in another clue)
(Other definitions for java that I've seen before include "Indonesian island - computer programming language" , "Most populous Indonesian island" , "Indonesian island noted for its coffee" , "Large island; coffee type" , "Indonesian island known for coffee" .)