Почему идея выдает ошибку ?

Идея выдает ошибку при введении третьего числа : Exception in thread "main" java.lang.NumberFormatException: For input string: "" at java.base/java.lang.NumberFormatException.forInputString(NumberFormatException.java:67) at java.base/java.lang.Integer.parseInt(Integer.java:678) at java.base/java.lang.Integer.parseInt(Integer.java:784) at stroki.Solution.main(Solution.java:12) public class Solution { public static void main(String[] args) throws Exception { BufferedReader reader = new BufferedReader(new InputStreamReader(System.in)); int number1 = Integer.parseInt(reader.readLine()); int number2 = Integer.parseInt(reader.readLine()); int number3 = Integer.parseInt(reader.readLine()); if ((number1 >= number2 && number1 <= number3) || (number1 <= number2 && number1 >= number3)) { System.out.println(number1); } else if ((number2 >= number1 && number2 <= number3) || (number2 <= number1 && number2 >= number3)) { System.out.println(number2); } else { System.out.println(number3); } } }