BreakIterator should support Iterator<Integer> so that a BreakIterator can be used in the enhanced-for loop.

String text = "Hello World!";
BreakIterator bi = BreakIterator.getWordInstance();
bi.setText(text);
int prev = -1;
for (int index : bi) {
if (prev >= 0) {
System.out.printf("'%s' (%d-%d)%n", text.substring(prev, index), prev, index);
}
prev = index;
}

----- output -------
'Hello' (0-5)
' ' (5-6)
'World' (6-11)
'!' (11-12)