停止Java枚举中的重复

EnumSet

public enum Resolution {    RES_32(32),    RES_64(64),    RES_128(128),    RES_256(256);    public static Set<Resolution> deluxe = EnumSet.allOf(Resolution.class);    public static Set<Resolution> typical = EnumSet.range(RES_64, RES_128);    public static Set<Resolution> ecomomy = EnumSet.of(RES_32);    private final int asInt;    private Resolution(int asInt) {        this.asInt = asInt;    }};

如下所示，可以使用适当命名的集合。

for (Resolution r : Resolution.deluxe) {    System.out.println(r.asInt);}