ǿжĳ collection  ıȽϺԽ Comparator ݸ sort  Collections.sort  Arrays.sortӶ˳ʵ־ȷơʹ Comparator ĳЩݽṹ setӳ䣩˳򣬻ΪЩûȻ˳Ķ collection ṩ
interface java.util.Comparator
.class interface Ljava/util/Comparator;

Ƚ
int compare(T o1, T o2)
invoke-interface {v0, v1, v2}, Ljava/util/Comparator;->compare(Ljava/lang/Object;Ljava/lang/Object;)I

ָʾĳǷ񡰵ڡ Comparator
boolean equals(Object obj)
invoke-interface {v0, v1}, Ljava/util/Comparator;->equals(Ljava/lang/Object;)Z
