通过 HashMap 迭代[重复]

Question

Possible Duplicate:
How to efficiently iterate over each entry in a 'Map'?

What's the best way to iterate over the items in a HashMap?

转载于:https://stackoverflow.com/questions/1066589/iterate-through-a-hashmap

Answer 1

Iterate through the entrySet() like so:

public static void printMap(Map mp) {
    Iterator it = mp.entrySet().iterator();
    while (it.hasNext()) {
        Map.Entry pair = (Map.Entry)it.next();
        System.out.println(pair.getKey() + " = " + pair.getValue());
        it.remove(); // avoids a ConcurrentModificationException
    }
}

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