The HashSet<E> and LinkedHashSet<E> Classes The HashSet<E> class implements the Set<E> interface. Since this implementation uses a hash table, it…
Comparing Collections and Streams It is important to understand the distinction between collections and streams. Streams are not collections, and…
Bulk Operations Bulk operations can be performed on an entire map. int size()boolean isEmpty() Return the number of entries (i.e.,…
The NavigableSet<E> Interface The NavigableSet<E> interface extends the SortedSet<E> interface with navigation methods to find the closest matches for given…
If the weight group is not in the map, its frequency is set to 1; otherwise, the method reference Integer::sum…
15.11 The Collections Class The Java Collections Framework also contains two utility classes, Collections and Arrays, that provide various operations…
Searching in Arrays A common operation on an array is to search the array for a given element, called the…
15.6 Queues In this section we look at the different types of queues provided by the Java Collections Framework. The…
The static method comparing() extracts a comparator that uses the getName() method of the Task class, and the default method…
Miscellaneous Utility Methods in the Arrays Class The methods toString() and fill() (Example 15.10, Example 15.11) have previously been used…