java list 按照多字段排序
阿新 • • 發佈:2019-04-01
升序 ets sed static sort class get des public
list 排序涉及的接口 Comparator, 具體實現代碼如下,以Apple類為例
public class Test{
public static void main(String [] args){
List<Apple> apples = new ArrayList<>(); Comparator<Apple> byName = Comparator.comparing(Apple::getName); Comparator<Apple> bySizeDesc = Comparator.comparing(Apple::getSize).reversed();// 先以名稱升序排列,再按照size倒敘排列
apples.sort(byName.thenComparing(bySizeDesc));
}
} @Data public class Apple{ private String color; private String name; private Integer size;
}
java list 按照多字段排序