import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
public class CollectionsExample {
public static void main(String[] args) {
List<String> list = new ArrayList<>();
list.add("Java");
list.add("Python");
list.add("C++");
Map<String, Integer> map = new HashMap<>();
map.put("Java", 20);
map.put("Python", 15);
map.put("C++", 10);
for (String element : list) {
System.out.println(element);
}
for (Map.Entry<String, Integer> entry : map.entrySet()) {
System.out.println(entry.getKey() + ": " + entry.getValue());
}
}
}
