Map <String, String> input = new HashMap<String, String>(); input.put("string1", "42"); input.put("string2", "41"); ... ... <看更多>

private static void checkTreesForMissingDefinitions(Map<String, String> glossary) {. FinancialTrees.getTrees(false).values().stream() ... ... <看更多>

在Java 8中的 Map.Entry 接口中增加了 comparingByKey , comparingByValue 方法，它们都返回 Comparator<Map.Entry<K,V>> , Comparator 是一个函数 ... ... <看更多>

You can use reduce , it returns an Optional that is empty if the stream is empty. You can use map to create the csv (or reduce) and add the brackets and ... ... <看更多>