我将使用一个非常简单的枚举构造函数,该构造函数将相应的组与枚举值相关联:
public enum Example {
ENUM_A1 (Group.A),
ENUM_A2 (Group.A),
ENUM_A3 (Group.A),
ENUM_B1 (Group.B),
ENUM_B2 (Group.B),
ENUM_B3 (Group.B),
ENUM_C1 (Group.C),
ENUM_C2 (Group.C),
ENUM_C3 (Group.C);
private Group group;
Example(Group group) {
this.group = group;
}
public boolean isInGroup(Group group) {
return this.group == group;
}
public enum Group {
A,
B,
C;
}
}
用法:
import static Example.*;
import Example.Group;
...
ENUM_A1.isInGroup(Group.A); // true
ENUM_A1.isInGroup(Group.B); // false
要进行分组,您可以使用与示例相同的Group结构,将其Group(SubGroup ... subgroups)
用作构造函数并EnumSet<SubGroup>
包含分组。