“TreeMap不接受参数”编译错误

This is my code:

这是我的代码:

import java.util.*;
public class TreeMap {
    public static void main(String[] args) {
        Map<String,Integer> treemap = new TreeMap<String,Integer>();
        Some code to fill the treemap ie treemap.put("Kevin", 36);
    }
}
import java.util.*