What am I doing Wrong?

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I know that my solution isnt the most elegant; I've tried a number of ways that failed to verify. So now I've decided to take a longer route. I am sure what's wrong please help. The last requirement fails where all others pass.

Use the keyboard to enter three numbers a, b, and c (the lengths of the sides of the proposed triangle).
Determine whether a triangle with these sides can exist.
Display the result as follows:
"The triangle is possible." - if a triangle with these sides could exist.
"The triangle is not possible." - if a triangle with these sides cannot exist.

Hint:
A triangle can exist only if the sum of two of its sides is greater than the third side.
You need to compare each side with the sum of the other two.
If even one side is larger or equal to the sum of the other two sides, then no such triangle exists.

Requirements:

The program should read three numbers from the keyboard.
The program should display text on the screen according to the task conditions.
If a triangle with the specified sides could exist, you need to display: "The triangle is possible."
If a triangle with the specified sides cannot exist, you need to display: "The triangle is not possible."

package com.codegym.task.task04.task0415; /* Rule of the triangle */ import java.io.*; public class Solution { public static void main(String[] args) throws Exception { BufferedReader reader= new BufferedReader(new InputStreamReader(System.in)); String a = reader.readLine(); int a1 = Integer.parseInt(a); String b = reader.readLine(); int b1 = Integer.parseInt(b); String c = reader.readLine(); int c1 = Integer.parseInt(c); if (a1 + b1 > c1) System.out.println("The triangle is possible."); else if (c1 >= a1+ b1) System.out.println("The triangle is not possible."); else if (b1 + c1 > a1) System.out.println("The triangle is possible."); else if (a1 >= b1 + c1) System.out.println("The triangle is not possible."); else if (c1 + a1 > b1 ) System.out.println("The triangle is possible."); else if (b1 >= c1 + a1) System.out.println("The triangle is not possible."); } }

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Michael Brimage

Level 19 , Washington D.C., United States

13 February 2020, 19:41

Great, i understand now!!! Thanks

Jakub Góźdź

Level 31 , Katowice, Poland

13 February 2020, 19:28

solution

Because all those conditions must be met simultaneously.

if( a + b > c && a + c > b && b + c > a)
{
    System.out.println("The triangle is possible.");
}
else
{
    System.out.println("The triangle is not possible.");
}