NumberFormatException
package com.javarush.task.task10.task1019;
/*
Функциональности маловато!
*/
import java.io.*;
import java.util.*;
import java.text.*;
public class Solution {
public static void main(String[] args) throws IOException {
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
HashMap<String, Integer> list = new HashMap<>();
int id = 0;
String name = null;
while (true){
String s = reader.readLine();
if (s.isEmpty()) break;
id = Integer.parseInt(s);
name = reader.readLine();
if (name.isEmpty()) break;
list.put(name, id);
}
for (Map.Entry <String, Integer> l : list.entrySet())
System.out.println(l.getValue() + " " + l.getKey());
}
}