（多选题）
Given a class whose instances， when found in a collection of objects， are sorted by using the compare To method， which two statements are true？（）
AThe class implements java.lang.Comparable.
BThe class implements java.util.Comparator.
CThe interface used to implement sorting allows this class to define only one sort sequence.
DThe interface used to implement sorting allows this class to define many different sort sequences.
正确答案
答案解析
略
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