null?
package com.javarush.task.task10.task1019;
import java.io.*;
import java.util.*;
public class Solution {
public static void main(String[] args) throws IOException {
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
HashMap<String, Integer> map = new HashMap<String, Integer>();
while(true)
{String id = reader.readLine();
if (id.isEmpty()||id==null)
{ break; } ;
String name = reader.readLine();
if (name.isEmpty()||name==null)
{ break; } ;
map.put(name, Integer.parseInt(id));
}
for (Map.Entry<String, Integer> pair : map.entrySet()) {
Integer id = pair.getValue();
String name = pair.getKey();
System.out.println("Id=" + id + " Name=" + name);
}
}
}