// "Replace with 'replaceAll()' call" "true"

import java.util.HashMap;
import java.util.Map;

public class Main {
  public static void main(String[] args) {
    Map<String, String> vals = new HashMap<>();
    vals.put("foo", "bar");
    String defaultValue = "42";
    for<caret> (String key : vals.keySet()) {
      vals.put(key, defaultValue);
    }
  }
}