The HashSet<E> and LinkedHashSet<E> Classes The HashSet<E> class implements the Set<E> interface. Since this implementation uses a hash table, it…
Overview of API for Data Processing Using Streams In this subsection we present a brief overview of new interfaces and…
The ArrayDeque<E> and LinkedList<E> Classes The ArrayDeque<E> and LinkedList<E> classes implement the Deque<E> interface. The ArrayDeque<E> class provides better performance…
16.1 Introduction to Streams A stream allows aggregate operations to be performed on a sequence of elements. An aggregate operation…
If the weight group is not in the map, its frequency is set to 1; otherwise, the method reference Integer::sum…
15.7 Deques In this section we look at deques—that is, linear collections that allow processing of elements from both ends.…
Searching in Arrays A common operation on an array is to search the array for a given element, called the…
Array Comparison The compare() method of the Comparable<E> interface allows two objects to be compared. The comparison relationship is generalized…
Comparing Arrays The java.util.Arrays class provides a rich set of static methods for comparing arrays of primitive data types and…
Advanced Key-Based Operations The following methods for a map take a function (implemented by a lambda expression or a method…