August 2003
Intermediate to advanced
672 pages
16h 23m
English
book
Programmer's Guide to Java™ Certification, A: A Comprehensive Primer, Second Edition
by Khalid A. Mughal, Rolf W. Rasmussen
Content preview from Programmer's Guide to Java™ Certification, A: A Comprehensive Primer, Second Edition
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11. Collections and Maps
| 11.1 |
(a), (d), and (e)
Set, Collection and Map are core interfaces in the collections framework. LinkedList is a class that implements the List interface. There is no class or interface named Bag. |
| 11.2 |
(b) and (e)
The java.util package provides map implementations named HashMap and TreeMap. It does not provide any implementations named HashList, ArraySet, and ArrayMap. |
| 11.3 |
(d)
The List interface is implemented by collections that maintain sequences of possibly non-unique elements. Elements retain their ordering in the sequence. Collection classes implementing SortedSet only allow unique elements that are maintained in a sorted order. |
| 11.4 |
(a) and (c)
Some operations on a collection may throw an UnsupportedOperationException ... |
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