How do I efficiently iterate over each entry in a Java Map?

java dictionary collections iteration
iMack picture iMack · Sep 5, 2008 · Viewed 2.6M times · Source

If I have an object implementing the Map interface in Java and I wish to iterate over every pair contained within it, what is the most efficient way of going through the map?

Will the ordering of elements depend on the specific map implementation that I have for the interface?

Answer

ScArcher2 picture ScArcher2 · Sep 5, 2008 
Map<String, String> map = ...
for (Map.Entry<String, String> entry : map.entrySet()) {
    System.out.println(entry.getKey() + "/" + entry.getValue());
}

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