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- List<Integer> list1 = ...
- List<Integer> list2 = ...
- class Pair {
- public Pair(final Integer i1, final Integer i2) {
- ...
- }
- }
- list1.stream()
- .flatMap(i1 -> list2.stream()
- .map(i2 -> new Pair(i1, i2)))
- .collect(Collectors.toList());
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