Write a Java Program to Iterate over a HashMap

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

class Main {
  public static void main(String[] args) {

    // Creating a HashMap
    HashMap<String, String> languages = new HashMap<>();
    languages.put("Java", "Enterprise");
    languages.put("Python", "ML/AI");
    languages.put("JavaScript", "Frontend");
    System.out.println("HashMap: " + languages);

    // iterating through key/value mappings
    System.out.print("Entries: ");
    for(Entry<String, String> entry: languages.entrySet()) {
      System.out.print(entry);
      System.out.print(", ");
    }

    // iterating through keys
    System.out.print("\nKeys: ");
    for(String key: languages.keySet()) {
      System.out.print(key);
      System.out.print(", ");
    }

    // iterating through values
    System.out.print("\nValues: ");
    for(String value: languages.values()) {
      System.out.print(value);
      System.out.print(", ");
    }
  }
}