Java Map put key value pair if key is absent

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, "Value " + i);
    }//from  ww  w. ja  v  a  2  s  .c o m
    System.out.println(map);
  }
}