To sort the objects of user-defined classes, a comparator interface is utilized. A comparator object can compare two items of…
The Comparable interface is used to compare an object of the same class with an instance of that class; it also enables data ordering for user-defined class objects. The class has to implement the java.lang.Comparable interface to compare its instance, it provides the compareTo() method, which accepts an object of that class as an argument. Its sorting algorithm is…
The Collections class belongs to the Java Collections Framework. The package java.util.Collections is the package containing the Collections class. The…
The Hashtable class creates a hash table by mapping keys to values. As a key or value, any non-null object…
Along with the AbstractMap Class, the TreeMap class in Java is used to implement the Map interface and NavigableMap. Depending…
Since Java 1.2, HashMap<K, V> class has been part of the Java collection. This class can be found in java.util…
The LinkedHashSet class is an ordered HashSet with a doubly-linked List across all entries. This class is used when the…
The Java HashSet class is used to create a collection that stores data in a hash table. It derives from…
Java includes a map interface. A mapping between a key and a value is represented by the util package. The…
TreeSet is a widespread Java implementation of the SortedSet interface that employs a Tree for storage. Whether an explicit comparator…