I have problem in last question.
I think I code it correctly， but the truth is not.
Where did I get wrong.
I need some suggestions.
https://www.codecademy.com/en/courses/learn-java/lessons/data-structures/exercises/generalizations-data-structures?action=resume
GeneralizationsD.java:22: error: cannot find symbol
for (String city : majorCities.ketSet(Integer) )
^
symbol: variable Integer
location: class GeneralizationsD
1 error
import java.util.*;
public class GeneralizationsD {
public static void main(String[] args) {
ArrayList<String> sports = new ArrayList<String>();
sports.add("Football");
sports.add("Boxing");
for(String sport : sports) {
System.out.println(sport);
}
//Major cities and the year they were founded
HashMap<String, Integer> majorCities = new HashMap<String, Integer>();
majorCities.put("New York", 1624);
majorCities.put("London", 43);
majorCities.put("Mexico City", 1521);
majorCities.put("Sao Paulo", 1554);
for (String city : majorCities.ketSet(Integer) )
{
System.out.println(city + " was founded in " + majorCities.get(city));
}
}
}