How To Count The Number Of Cccurrences Of Each Character In A String In Java

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import java.util.HashMap;
import java.util.Map;

public class CharacterCount {
    public static void main(String[] args) {
        String str = "Hello, World!";
        Map<Character, Integer> charCountMap = new HashMap<>();

        // Iterate over each character in the string
        for (char c : str.toCharArray()) {
            // Check if the character is already in the map
            if (charCountMap.containsKey(c)) {
                // If it is, increment the count by 1
                int count = charCountMap.get(c);
                charCountMap.put(c, count + 1);
            } else {
                // If it is not, add it to the map with a count of 1
                charCountMap.put(c, 1);
            }
        }

        // Print the character count
        for (Map.Entry<Character, Integer> entry : charCountMap.entrySet()) {
            System.out.println("'" + entry.getKey() + "' occurs " + entry.getValue() + " times");
        }
    }
}

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