单项选择题
A.java.lang B.java.util C.java.concurrent D.java.net
A.static B.final C.native D.private
A.Collections.max(c) B.Collections.min(c) C.Collections.sort(c) D.Collections.mid(c)
A、Collections.max(c) B、Collections.min(c) C、Collections.sort(c) D、Collections.mid(c)
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