Scanner sc = new Scanner(System.in);System.out.print("请输入你的体重: ");double weight = sc.nextDouble();System.out.print("请输入的身高: ");double height = sc.nextDouble();double BMI = weight / (height * height);if (BMI < 18.5) {    System.out.println("过轻");} else if (BMI >= 18.5 && BMI < 25) {    System.out.println("正常");} else if (BMI >= 25 && BMI < 28) {    System.out.println("超重");} else if (BMI >= 28 && BMI < 32) {    System.out.println("肥胖");} else {    System.out.println("非常肥胖");}