Java Collection How to - Loop for each item in Map

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Question

We would like to know how to loop for each item in Map.

Answer

/*from   w w w .  jav  a2 s.  co  m*/
import java.util.HashMap;
import java.util.Map;

public class Main {

    public static void main(String[] args) {
        Map<Integer, String> map = new HashMap<>();

        for (int i = 0; i < 10; i++) {
            map.putIfAbsent(i, "val" + i);
        }

        map.forEach((id, val) -> System.out.println(val));
    }
}

The code above generates the following result.

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