What will be the output of the following Java program?import java.util.*;class Maps {public static void main(String args[]) {TreeMap obj = new TreeMap();obj.put("A", new Integer(1));obj.put("B", new Integer(2));obj.put("C", new Integer(3));System.out.println(obj.entrySet());}}

Quiz on java.util concepts including maps, array list, hash set, tree set, linked list, stacks, vectors, dictionary and hash table, rmi, iterators, collection framework overview, collection interface and algorithms. The java.util package is a part of the Java programming language that contains a collection of interfaces and classes that can be used to store and manipulate groups of objects. The Collections Framework provides a unified architecture for storing, retrieving, manipulating, and searching collections of objects. The Collections Framework is a hierarchical structure that consists... Show more

Quiz on java.util concepts including maps, array list, hash set, tree set, linked list, stacks, vectors, dictionary and hash table, rmi, iterators, collection framework overview, collection interface and algorithms.

The java.util package is a part of the Java programming language that contains a collection of interfaces and classes that can be used to store and manipulate groups of objects. The Collections Framework provides a unified architecture for storing, retrieving, manipulating, and searching collections of objects.
The Collections Framework is a hierarchical structure that consists of interfaces, classes, and algorithms. The interfaces define the operations that can be performed on a collection, while the classes implement these operations. The algorithms provide efficient ways to perform common operations on collections, such as sorting, searching, and filtering.

Here are some of the commonly used classes in the java.util package:
ArrayList: A resizable array.
LinkedList: A doubly-linked list.
HashMap: A hash table.
HashSet: A hash set.
TreeSet: A sorted set.
TreeMap: A sorted map.

The Collections Framework also provides a number of algorithms that can be used to perform common operations on collections, such as sorting, searching, and filtering.
The Collections Framework is a powerful tool that can be used to store and manipulate groups of objects in Java. It provides a unified architecture, efficient implementations, and flexibility.

Show less