List<String> strings1 = strings.stream().map(s1 -> s1.toUpperCase()).collect(Collectors.toList()); strings1.forEach(s1 -> System.out.println(s1)); //筛选不为空的字段 List<String> strings2 = strings.stream().filter(s2 -> !s2.isEmpty()).collect(Collectors.toList()); strings2.fo...
); Preconditions.checkArgument( !sinks.isEmpty(), "Miss <Sink> config! Please check the config file."); sources.forEach( source -> { for (String sensitiveOption : sensitiveOptions) { source.computeIfPresent(sensitiveOption, processFunction); } }); sinks.forEach( sink -> { for (String ...
put(3, "Pencil"); printKeys(linkedHashMap); } private static void printKeys(LinkedHashMap<Integer, String> map) { //Print the keys of the LinkedHashMap for (Integer key : map.keySet()) { System.out.println(key); } } } Output 1 2 3 Approach-2: Utilizing the forEach() ...