how to iterate on a map in java

// for :



    // by keys
    
    for (String i : capitalCities.keySet()) {
      System.out.println("key: " + i + " value: " + capitalCities.get(i));
    }
    
    
    
    
    // by values
    
    for (String i : capitalCities.values()) {
      System.out.println(i);
    }
    
    
    
    
    // by <entry,value>
    
    for (Map.Entry<Integer, String> entry : datos.entrySet()) {
        System.out.println("clave=" + entry.getKey() + ", valor=" + entry.getValue());
    }




// foreach (cannot `returns <Type>`, only `return;` as a `break;`)

    names.forEach(name -> {
        System.out.println(name);
    });

    datos.forEach((k,v) -> System.out.println("Key: " + k + ": Value: " + v));