Hi guys.
I'm not quite sure what failed.
I tried to input 10 sets of values, and the output seems a bit odd (there was a "null" set in front of everything" .
Do you know what's going on here?
Thanks in advance.
package zh.codegym.task.task10.task1018;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.HashMap;
import java.util.Map;
/*
需要更正
*/
public class Solution {
HashMap<Integer, String> map;
static Integer index;
static String name;
public Solution() {
this.map = new HashMap<>();
map.put(index, name);
}
public static void main(String[] args) throws IOException {
Solution solution = new Solution();
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
for (int i = 0; i < 10; i++) {
Integer index = Integer.parseInt(reader.readLine());
String name = reader.readLine();
solution.map.put(index, name);
}
for (Map.Entry<Integer, String> pair : solution.map.entrySet()) {
index = pair.getKey();
name = pair.getValue();
System.out.println("Id=" + index + " Name=" + name);
}
}
}