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輸出結果 ...
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傳統方式:ListUtil.java View Code 參考:https://blog.csdn.net/frankenjoy123/article/details/70739800 java stream: 過濾 ...
List<Map<String, Object>> dataList = new ArrayList<>(); Integer total = dataList.stream().mapToInt(e -> Integer.parseInt(e.get ...
1.根據屬性過濾list List<AllManagerBean> testLists = broadCastRoomMapper.allManagerlist(); List<AllManagerBean> mans = testLists.stream ...
利用java8新特性,可以用簡潔高效的代碼來實現一些數據處理。定義1個Apple對象: public class Apple { private Integer id; private String name; private BigDecimal money ...
利用java8新特性,可以用簡潔高效的代碼來實現一些數據處理。 定義1個Apple對象: public class Apple { private Integer id; private String name; private BigDecimal money; private ...