public static Boolean trangle(int x, int y, int z){ if (x+y<z||x+z<y||y+z<x) return false; else return true; } public static void main(String[] args) { Scanner scan = new Scanner(System.in); System.out.println("请输入三个数字"); int x = scan.nextInt(); int y = scan.nextInt(); int z = scan.nextInt(); test2 countSum = new test2(); boolean flag = test2.trangle(x,y,z); if (flag) System.out.println("可以组成三角形"); else System.out.println("不可以组成三角形"); }