May 2024
Intermediate to advanced
889 pages
37h 5m
English
Content preview from Java Programming by Pearson
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The Collection Framework • 563
Explanation: This program shows few methods of SortedMap interface. The firstKey and lastKey
method returns the fi rst and last key of the specifi ed map. The headMap returns a map where all the keys
of map entries are less than the specifi ed key. The tailMap does the reverse of headMap .
18.9 THE COMPARATOR INTERFACE
The
Comparator
interface is a type of comparison function, which imposes a total ordering on some
collection of objects. By default, Java uses the natural ordering of the elements for the comparison
purpose, that is, 8 comes before 9, C comes before D and so on. The natural order can be ...
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