for(Map.Entry<String, String> entry : mapA.entrySet())
    System.out.printf("%-20s%s%n", entry.getKey(), entry.getValue());

for(Map.Entry<String, String> entry : mapB.entrySet())
    System.out.printf("%-20s%s%n", entry.getKey(), entry.getValue());

for(Map.Entry<String, String> entry : mapC.entrySet())
    System.out.printf("%-20s%s%n", entry.getKey(), entry.getValue());