public enum WeekEnum {
MONDAY(1, "周一"),
TUESDAY(1<<1, "周二"),
Wednesday(1<<2, "周三"),
Thursday(1<<3, "周四"),
Friday(1<<4, "周五"),
Saturday(1<<5, "周六"),
Sunday(1<<6, "周天"),
;
private Integer value;
private String name;
WeekEnum(Integer value, String name) {
this.value = value;
this.name = name;
}
public Integer getValue() {
return value;
}
public String getName() {
return name;
}
static Integer getValueByWeek(List<WeekEnum> weeks) {
return weeks.stream().mapToInt(e -> e.getValue()).reduce((k1, k2) -> k1 | k2).getAsInt();
}
static List<WeekEnum> getWeekByValue(Integer value) {
return Arrays.stream(WeekEnum.values()).filter(e -> (value & e.getValue()) == e.getValue()).collect(Collectors.toList());
}
}
使用位运算存储多选值
young
641
2022-10-23