标签:get ctc xmlns 推荐一个 www https ESS net chart
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原文地址:https://blog.csdn.net/zh15732621679/article/details/80483617
项目需求描述 |
分组及去重 |
classEntities.stream().collect(Collectors.groupingBy(ClassEntity::getGrade));
List<ClassEntity> distinctClass = classEntities.stream().collect(Collectors.collectingAndThen(Collectors.toCollection(() -> new TreeSet<>(Comparator.comparing(o -> o.getProfessionId() + ";" + o.getGrade()))), ArrayList::new));
List<String> classNameList = new ArrayList(new HashSet(classNames));
标签:get ctc xmlns 推荐一个 www https ESS net chart
原文地址:https://www.cnblogs.com/java-hardly-road/p/11395976.html