Can someone please review my code. I'm not passing the last condition: 7. The displayed result should match the task conditions for any input data.

Question about the task

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package com.codegym.task.task05.task0507;

/*
Arithmetic mean

*/

import java.io.BufferedReader;
import java.io.InputStreamReader;

public class Solution {
    public static void main(String[] args) throws Exception {
        BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(System.in));
        int sum = 0;
        int count = 0;
        int grade = Integer.parseInt(bufferedReader.readLine());



        while (grade != -1) {
            sum += grade;
            count++;

            grade = Integer.parseInt(bufferedReader.readLine());
        }



        double average = (double) sum/count;

        System.out.printf("%.1f",average);

    }
}

Use the keyboard to enter numbers, and then calculate the arithmetic mean.
If the user enters -1, display the arithmetic mean of all entered numbers and end the program.
-1 should not be included in the calculation.

Here are some examples:
a) if you enter the numbers
1
2
2
4
5
-1
then we display
2.8

b) if you enter the numbers
4
3
2
1
-1
then we display
2.5

Hint: one of the solutions to this problem uses the following construct:

while (true) {
    int number = read the number;
    if (check whether the number is -1)
        break;
}

Requirements:

The program must read data from the keyboard.
The program should display data on the screen.
After entering -1, the program must correctly terminate.
If you sequentially enter the numbers 1, 2, 2, 4, 5 and -1, the program should display 2.8.
If you sequentially enter the numbers -100, 0, 100, and -1, the program should display 0.0.
If you sequentially enter the numbers 1 and -1, the program should display 1.0.
The displayed result should match the task conditions for any input data.

package com.codegym.task.task05.task0507; /* Arithmetic mean */ import java.io.BufferedReader; import java.io.InputStreamReader; public class Solution { public static void main(String[] args) throws Exception { BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(System.in)); int sum = 0; int count = 0; int grade = Integer.parseInt(bufferedReader.readLine()); while (grade != -1) { sum += grade; count++; grade = Integer.parseInt(bufferedReader.readLine()); } double average = (double) sum/count; System.out.printf("%.2f",average); } }

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Misiu

Level 41 , Gdansk, Poland

13 May 2020, 01:11

Don't format output. System.out.printin(average); is enough.

Mark Costales

Level 24

13 May 2020, 15:20

Thank you Misiu

Syed Huzaifa

Level 7 , Karachi, Pakistan

12 May 2020, 22:36

BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(System.in));
        int sum = 0;
        int count = 0;
        // int grade = Integer.parseInt(bufferedReader.readLine());

        while (true) { // loop until the condition is true

            int grade = Integer.parseInt(bufferedReader.readLine()); // take input as String and converted into int
            if(grade == -1){
                break; // breakout the loop when the input is according the condition
            }
            sum += grade; // shorthand method for sum = sum+grade
            count++; // shorthand method for count = count + 1

        }

        double average = (double) sum/count; // calculate the mean (make sure to convert the ints to double first)

        System.out.print(average); // output

try this code i made some changes in your code