Java 类文件在 IntelliJ 项目中运行，但不在项目之外运行

Question

我刚刚进行了一个测验，我们应该根据一些给定的标准创建一个医院类，然后在 HospitalTester 驱动程序类中实例化一个医院类...我在 IntelliJ 中顺利完成了作业，并且运行良好。

然后我做了我一直做的事情，我将要提交的java文件HospitalTester.java从项目文件夹中复制出来，然后单独提交(教授没有希望我们提交项目，只是单独的 java 文件)。

我以为我已经完成了，一切都很好，但令我恐惧的是，我今天收到一封电子邮件，说类只有 1 人获得了 100/100。我去检查我提交的内容，当我运行它时，没有任何反应......

我的所有代码都在下面，当我将其作为保存为“Quiz 1”的项目打开时，它运行得很好，但当我从项目文件夹的 src 文件夹中删除它时，它无法运行。

为什么会发生这种情况？

import java.text.DecimalFormat;
import java.util.Scanner;

public class HospitalTester {

    public static void main(String[] args) {

        // Construct new hospital instance
        Hospital hospital = new Hospital(
                "Grey-Sloan Memorial",
                10,
                150000.79,
                2450896.50);


        // Asks for keyboard prompt for hospital information.
        hospital.setName();
        hospital.setNumberOfDoctors();
        hospital.setAvgDoctorSalary();
        hospital.setTotalGrossIncome();


        //Creates a new String variable to print toString() method out from
        String sys;
        sys = hospital.toString();
        System.out.print(sys);

        // Provides percent of doctor salary compared to Total Gross Income
        hospital.percentDoctors();
    }

}


class Hospital {
    String name;
    private int number_doctors;
    private double avg_salary_doctors;
    private double total_gross_income;


    // Hospital Constructor
    public Hospital(String name, int number_doctors, double avg_salary_doctors, double total_gross_income) {
        this.name = name;
        this.number_doctors = number_doctors;
        this.avg_salary_doctors = avg_salary_doctors;
        this.total_gross_income = total_gross_income;
    }

    // Get methods to return hospital name, number of doctors, avg doctor salary, and total gross income of hospital.
    public String getName() {
        return name;
    }

    public int getNumberOfDoctors() {
        return number_doctors;
    }

    public double getAvgDoctorSalary() {
        return avg_salary_doctors;
    }

    public double getTotalGrossIncome() {
        return total_gross_income;
    }

    //Set methods to change hospital name, number of doctors, avg doctor salary, and total income of hospital varaibles.

    public void setName() {
        System.out.print("Enter a new name for the hospital: \n");
        this.name = new Scanner(System.in).nextLine();
    }

    public void setNumberOfDoctors() {
        System.out.print("Enter the number of doctors working at the hospital: \n");
        this.number_doctors = new Scanner(System.in).nextInt();
    }

    public void setAvgDoctorSalary() {
        System.out.print("Enter the average doctor salary: \n");
        this.avg_salary_doctors = new Scanner(System.in).nextDouble();
    }

    public void setTotalGrossIncome() {
        System.out.print("Enter the total gross income that the hospital makes: \n");
        this.total_gross_income = new Scanner(System.in).nextDouble();
    }

    // Calculates total doctors salary: (Number of doctors * avg salary of doctor) / Total Gross Income
    public void percentDoctors() {
        double percent, percent_converted;
        String percent_converted_rounded;
        percent = (number_doctors * avg_salary_doctors) / total_gross_income;
        percent_converted = percent * 100;

        // Round off to two decimal places.
        DecimalFormat df = new DecimalFormat("#,###,##0.00");
        percent_converted_rounded = df.format(percent_converted);

        System.out.print("Doctor salary as a percent of total gross income = " + percent_converted_rounded + "% \n");


    }


    public String toString() {


        //Provide formatting to Doctor salary and hospital income financial numbers.
        DecimalFormat df = new DecimalFormat("#,###,##0.00");
        String hospital_income_format, avg_salary_doctors_format;
        hospital_income_format = df.format(total_gross_income);
        avg_salary_doctors_format = df.format(avg_salary_doctors);


        return "Name = " + name
                + "\nNumber of Doctors = " + number_doctors + " doctors " +
                "\nAverage Doctor Salary = $" + avg_salary_doctors_format +
                "\nHospital Income = $" + hospital_income_format + "\n";
    }

}

Answer 1

我刚刚将您的代码复制到一个名为 HospitalTester.java

的 Java 文件中

我运行javac HospitalTester.java

我运行java HospitalTester

扫描仪启动:

Enter a new name for the hospital:

希望有帮助。