3 пункт що роблю не так

package ua.javarush.task.pro.task03.task0306; import java.util.Scanner; /* Трикутник */ public class Solution { private static final String TRIANGLE_EXISTS = "трикутник існує"; private static final String TRIANGLE_NOT_EXISTS = "трикутник не існує"; public static void main(String[] args) { Scanner scanner = new Scanner(System.in); int number1 = scanner.nextInt(); int number2 = scanner.nextInt(); int number3 = scanner.nextInt(); int sum1 = number1 + number2; int sum2 = number1 + number3; int sum3 = number2 + number3; boolean st1 = sum1 < number3; boolean st2 = sum2 < number2; boolean st3 = sum3 < number1; if (st1 && st2 && st3){ System.out.println(TRIANGLE_EXISTS); } else{ System.out.println(TRIANGLE_NOT_EXISTS); } } }