Help Please! I get right results, but can not pass though. (check my two versions, both work,but not validate)

Question about the task

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You can see two variants using break statement and other using whileController public class Solution { public static void main(String[] args) throws IOException { BufferedReader reader = new BufferedReader(new InputStreamReader(System.in)); HashMap<Integer, String> myMap = new HashMap<>(); while(true){ Integer id; String name; String tempInteger; tempInteger = reader.readLine(); // String representation of an integer i will check if it is empty asAs it is read if(tempInteger.isEmpty()){ break; } id = Integer.parseInt(tempInteger); name = reader.readLine(); if(name.isEmpty()){ myMap.put(id , name); break; } myMap.put(id, name); } for(Map.Entry<Integer, String> pairs : myMap.entrySet()){ System.out.println(pairs.getKey() + " " + pairs.getValue()); } } }

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; import java.util.Map; /* 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> myMap = new HashMap<>(); Boolean whileController = true; while(whileController){ Integer id; String name; String tempInteger; tempInteger = reader.readLine(); // String representation of an integer i will check if it is empty asAs it is read if(tempInteger.isEmpty()){ whileController = false; } id = Integer.parseInt(tempInteger); name = reader.readLine(); if(name.isEmpty()){ myMap.put(id , name); whileController = false; } myMap.put(id, name); } for(Map.Entry<Integer, String> pairs : myMap.entrySet()){ System.out.println(pairs.getKey() + " " + pairs.getValue()); } } } /*if(name.isEmpty()){ myMap.put(id, null); break; }*/ /*if(id.equals("") || name.equals("")){ break; }*/

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Alexandru Ovcinicov

Level 15 , London, United Kingdom

21 September 2019, 15:17

solution

Guys, i found some usefull links to how to solve this *** Task... you could use try catch on inputs , and : sequence of Input from keyboard is - number , then string , BUT Map should have Strings as Keys and Integers as Values.

Alexandru Ovcinicov

Level 15 , London, United Kingdom

21 September 2019, 14:52

This doesn't work aswell: public class Solution { public static void main(String[] args) throws IOException { BufferedReader reader = new BufferedReader(new InputStreamReader(System.in)); HashMap<String, Integer> myMap = new HashMap<>(); while(true){ String numbers = reader.readLine(); String words = reader.readLine(); Integer num; if(numbers.isEmpty() && words.isEmpty()){ break; }else if(!numbers.isEmpty() && words.isEmpty()){ num = Integer.parseInt(numbers); myMap.put(words, num); break; }else if(numbers.isEmpty() && !words.isEmpty()){ myMap.put(words, Integer.parseInt(numbers)); break; }else{ myMap.put(words, Integer.parseInt(numbers)); } } for(Map.Entry<String, Integer> pair : myMap.entrySet()){ System.out.println(pair.getValue() + " " + pair.getKey()); } } }

Alexandru Ovcinicov

Level 15 , London, United Kingdom

21 September 2019, 13:59

This doesnt validate as well (( but the result i get are right... public class Solution { public static void main(String[] args) throws IOException { BufferedReader reader = new BufferedReader(new InputStreamReader(System.in)); HashMap<Integer, String> myMap = new HashMap<>(); while(true){ String number = reader.readLine(); if(!number.isEmpty()){ //if parsed value is not Empty Integer parsedNumber = Integer.parseInt(number); String name = reader.readLine(); if(!name.isEmpty()){ myMap.put(parsedNumber, name); }else{ myMap.put(parsedNumber, name); break; } }else{ break; } } for(Map.Entry<Integer, String> pair: myMap.entrySet()){ System.out.println(pair.getKey() + " " + pair.getValue()); } } }