Question

有人可以帮我修改我的代码以使其正常工作。在控制台中，它不允许我键入任何内容。有人可以在他们的计算机上测试代码并用固定代码发送评论吗？如果没有，你能告诉我我的代码有问题吗？

String yes =＆＃34; yes＆＃34 ;;

    System.out.println("Do you have gym this semester?");
    input.nextLine();
    if (input.equals(yes)){

        int Gym;
        double GymGpa = 0;
        System.out.println("Gym = ");
        Gym= input.nextInt();
        input.close();
        if (Gym >100){
            System.out.println("You have mistyped something");
        }
        if (Gym >= 94 && Gym < 101){
            System.out.println("You have an A");
            GymGpa = 4.0;
            System.out.println(GymGpa);
        }
        if (Gym < 94 && Gym >=90){
            System.out.println("You have an A-");
            GymGpa = 3.7;
            System.out.println(GymGpa);
        }
        if (Gym < 90 && Gym >=87){
            System.out.println("You have a B+");
            GymGpa = 3.3;
            System.out.println(GymGpa);
        }
        if (Gym < 87 && Gym >=80){
            System.out.println("You have a B");
            GymGpa = 3.0;
            System.out.println(GymGpa);
        }
        if (Gym < 80 && Gym >=77){
            System.out.println("You have a B-");
            GymGpa = 2.7;
            System.out.println(GymGpa);
        }
        if (Gym < 77 && Gym >=73){
            System.out.println("You have a C+");
            GymGpa = 2.3;
            System.out.println(GymGpa);
        }
        if (Gym < 73 && Gym >=70){
            System.out.println("You have a C");
            GymGpa = 2.0;
            System.out.println(GymGpa);
        }
        if (Gym < 70 && Gym >=67){
            System.out.println("You have a C-");
            GymGpa = 1.7;
            System.out.println(GymGpa);
        }
        if (Gym < 67 && Gym >=67){
            System.out.println("You have a D+");
            GymGpa = 1.3;
            System.out.println(GymGpa);
        }
        if (Gym < 67 && Gym >=63){
            System.out.println("You have a D");
            GymGpa = 1.0;
            System.out.println(GymGpa);
        }
        if (Gym < 63 && Gym >=60){
            System.out.println("You have a D-");
            GymGpa = 0.7;
            System.out.println(GymGpa);
        }
        if (Gym < 60){
            System.out.println("You have a F");
            GymGpa = 0.0;
            System.out.println(GymGpa);
        }//End of Gym
    }else if (input.equals("no")){

    }

Answer 1

您正在将Scanner与String进行比较。您希望在比较之前将输入存储为String。试试这个：

...
Scanner input = new Scanner(System.in);
String yes = "yes";
String answer = input.nextLine();

if (answer.equals(yes)){
    ...
}

为什么我的输入扫描仪和我的其他程序无法工作？

1 个答案: