It says if an empty string is entered into after the number, it should not lose the number. I am printing the number. What seems to be the problem?

Question about the task

Under discussion

public class Solution {
    public static void main(String[] args) throws IOException {
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
        HashMap<Integer,String> map = new HashMap<Integer, String>();
        while(true)
        {
            String t = reader.readLine();
            if(t.equals("")) {break;}
            int id = Integer.parseInt(t);
            t = reader.readLine();
            if(t.equals(""))
            {
                String name = t;
                map.put(id,"");
                break;
            }
            String name = t;
            map.put(id,name);


        }
        for (int k: map.keySet())
        {
            System.out.println(k+" "+map.get(k));
        }
    }
}

Task: The program reads a pair (a number and string) from the keyboard and displays it on the screen.
New task: The program reads pairs (a number and string) from the keyboard and stores them in a HashMap.
Any empty input signifies the end of data entry.
The numbers can be repeated.
The strings are always unique.
The entered data must not be lost!
The program then displays the contents of the HashMap on the screen.
Each pair on a new line.

Example input:
1 Sam 2 I 1 Am

Example output:
1 Sam 2 I 1 Am

Requirements:

The program must read data from the keyboard.
The program should display text on the screen.
In the main method, declare a HashMap variable and immediately initialize it.
The program should put the pairs read from the keyboard into the HashMap.
The program should display the contents of the HashMap in accordance with the conditions. The key and value are separated by a space. Each value should be on a new line.

package com.codegym.task.task10.task1019; import java.io.*; import java.util.HashMap; /* Functionality is not enough! */ public class Solution { public static void main(String[] args) throws IOException { BufferedReader reader = new BufferedReader(new InputStreamReader(System.in)); HashMap<Integer,String> map = new HashMap<Integer, String>(); while(true) { String t = reader.readLine(); if(t.equals("")) {break;} int id = Integer.parseInt(t); t = reader.readLine(); if(t.equals("")) { String name = t; map.put(id,""); break; } String name = t; map.put(id,name); } for (int k: map.keySet()) { System.out.println(k+" "+map.get(k)); } } }

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Nobody

Level 37 , Seattle, US

14 May 2019, 08:49

you should declare HashMap<String, Integer> instead of HashMap<Integer, String> because the requirements allow dupplicate int not String so String should be the key. and for the name input you should also check if it was contained in map by method containsKey() .