Word Counter with HashMap

In this problem: You will create a program that uses HashMap<String, Integer> to count word occurrences in a predefined array of words and display each word with its count, sorted alphabetically.

Learning Objective: Understand basic HashMap operations (put, get, containsKey) and how to traverse entries

Overview

Manage the occurrence count of each word in a string array using a HashMap. Implement adding/updating values in the map and displaying entries sorted by key.

Specifications

Main Class (Main.java)

1. Define the following word array: {"apple", "banana", "apple", "cherry", "banana", "apple", "date", "cherry"}
2. Create a HashMap<String, Integer>
3. Traverse the array and count occurrences of each word
   • If the word is not in the map, add it with count 1
   • If the word is already in the map, increment the count by 1
4. Sort words alphabetically and display them
   • Format: "word: count" (one word per line)
5. Finally display the number of unique words (format: "Unique words: count")

Output Format

apple: 3
banana: 2
cherry: 2
date: 1
Unique words: 4