import java.util.*;
 
public class Main {
 
    public static void countWords(String text) {
        text = text.toLowerCase();
        text = text.replaceAll("[^a-zA-Z0-9 ]", "");
        String[] words = text.split("\\s+");
 
        Map<String, Integer> freq = new HashMap<>();
        for (String w : words) {
            freq.put(w, freq.getOrDefault(w, 0) + 1);
        }
 
        for (Map.Entry<String, Integer> e : freq.entrySet()) {
            System.out.println(e.getKey() + " → " + e.getValue());
        }
    }
 
    public static void main(String[] args) {
        String kalimat = "This is a test. This is only a test";
        countWords(kalimat);
    }
}
 

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