class Solution {
public String[] solution(String my_string) {
List<String> list = new ArrayList<>();
StringTokenizer st = new StringTokenizer(my_string);
while(st.hasMoreTokens()) {
list.add(st.nextToken(" "));
}
String[] answer = new String[list.size()];
for (int i = 0; i < list.size(); i++) {
answer[i]=list.get(i);
}
return answer;
}
}