How can I iterate over a map of ?

Question

I\'ve got a Map (actually I\'m using a more complex POJO but simplifying it for the sake of my question)

Person looks

Answer 1

You can use:

• Map.entrySet() (as mentioned by org.life.java) or,
• Map.keySet() as in this example (based on your sampled code)

Example:

Map personMap = ..... //assuming it's not null
Iterator strIter = personMap.keySet().iterator();
synchronized (strIter) {
    while (strIter.hasNext()) {
        String key = strIter.next();
        Person person = personMap.get(key);

        String a = key;
        String b = person.getName();
        String c = person.getAge().toString();
        System.out.println(String.format("Key : %s Name : %s Age : %s", a, b, c));

    }
}