In detail, how does the 'for each' loop work in Java?

Consider:

List<String> someList = new ArrayList<>();// add "monkey", "donkey", "skeleton key" to someList

for (String item : someList) {    System.out.println(item);}

What would the equivalent for loop look like without using the for each syntax?

_{People new to Java commonly encounter issues when trying to modify the original data using the new style foreach loop. Use Why doesn't assigning to the iteration variable in a foreach loop change the underlying data? to close duplicates about that common problem. Note that other languages with analogous constructs generally have the same issue; for example, see Why doesn't modifying the iteration variable affect subsequent iterations? for the same issue in Python.}