Review Questions

Review Questions

15.16 Which statements about collections are true?

Select the two correct answers.

(a) Some operations on a collection may throw an UnsupportedOperationException.

(b) Methods calling optional operations in a collection must either catch an UnsupportedOperationException or declare it in their throws clause.

(c) A List can have duplicate elements.

(d) An ArrayList can only accommodate a fixed number of elements.

(e) The Collection interface contains a method named get.

15.17 What will be the result of attempting to compile and run the following program?

import java.util.ArrayList;import java.util.Collection;import java.util.HashSet; ...

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