[Solved] Reworking method with stream usage [duplicate]

by


If you can work with a Map<String, Long> then you can use this:

public Map<String, Long> countCodingsByDate() {
    return codingHistory.historyDate.stream()
        .collect(Collectors.groupingBy(
            Function.identity(),
            Collectors.counting()
        ));
}

Note: This is the normal way to find out the occurances of a Collection. For similar questions, see: 1, 2

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solved Reworking method with stream usage [duplicate]