Test8：對(duì)象之間one-to-many關(guān)系測(cè)試題

問題 1
A collection typically models a _____ relationship.
A. many-to-many
B. zero-to-one
C. one-to-many
D. one-to-one
答案：
C

問題 2
Consider the following method call, where c is an instance of the class java.util.ArrayList.

c.size();

This method call returns the number of
A. times that the method c.add has been called
B. elements in the ArrayList represented by c
C. ArrayList objects that have been instantiated
D. bytes used by c
答案：
B

問題 3
請(qǐng)看下圖：

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