计算 20 名工人平均工资的 Java 程序

Question

我已经坚持了一段时间，一个计算 20 名工人平均工资的 Java 程序，这是我到目前为止想出的。………………………………………………………………………………………………………………………………………………………… ………………………………………………………………………………………………………………………………………………………… ………………………………………………………………………………………………………………………………………………………… ......import java.util.Scanner;class Employee{    int age;    String name, address, gender;    Scanner get = new Scanner(System.in);    Employee()    {        System.out.println("Enter Name of the Employee:");        name = get.nextLine();        System.out.println("Enter Gender of the Employee:");        gender = get.nextLine();        System.out.println("Enter Address of the Employee:");        address = get.nextLine();        System.out.println("Enter Age:");        age = get.nextInt();    }    void display()    {        System.out.println("Employee Name: "+name);        System.out.println("Age: "+age);        System.out.println("Gender: "+gender);        System.out.println("Address: "+address);    }}class fullTimeEmployees extends Employee{    float salary;    int des;    fullTimeEmployee()    {        System.out.println("Enter Designation:");        des = get.nextInt();        System.out.println("Enter Salary:");        salary = get.nextFloat();    }    void display()    {        System.out.println("=============================="+"\n"+"Full Time Employee Details"+"\n"+"=============================="+"\n");        super.display();        System.out.println("Salary: "+salary);        System.out.println("Designation: "+des);    }}class partTimeEmployees extends Employee{    int workinghrs, rate;    partTimeEmployees()    {        System.out.println("Enter Number of Working Hours:");        workinghrs = get.nextInt();    }    void calculatepay()    {        rate = 8 * workinghrs;    }

Answer 1

在 Employee 中添加一个返回工资的抽象方法：

public abstract int getSalary();

并在每个子类中实现它：

// class names start with upper case character

class FullTimeEmployee extends Employee

{

    // don't use float, represent money in cents (and you should maybe represent the currency separately)

    int salary;

    // 'des' is not clear

    int designtation;

    fullTimeEmployee()

    {

        System.out.println("Enter Designation:");

        designtation = get.nextInt();

        System.out.println("Enter Salary:");

        salary = get.nextInt();

    public abstract int getSalary() {

        return salary;

    }

为什么是rate = 8 & workingHours？

要计算平均值，请跟踪总工资和计算的员工人数，同时迭代每个员工：

    int count = 0;

    int totalSalary = 0;    

    Employee emp; 

    while (emp = getEmployee() != null) {

        count++;     

        totalSalary += emp.getSalary();

    }

    double avgSalary = totalSalary / count;

    System.out.println("Avg salary: " + avgSalary);

}

private Employee getEmployee() {

    Employeee emp = null;

    System.out.println("Part time or full time employee? any other key to quit (p/f):");

    String input = get.nextString();

    if ("f".equalsIgnoreCase(input)) {

        System.out.println("================================"+"\n"+"Enter     Full Time Employee Details"+"\n"+"================================"+"\n");

        emp = new FullTimeEmployee();

    }

    else if ("p".equalsIgnoreCase(input)) {

        emp = new PartTimeEmployee();

        System.out.println("================================"+"\n"+"Enter Part Time Employee Details"+"\n"+"================================"+"\n");

    }

    return emp;

}    

Answer 2

将构造函数更改fullTimeEmployee为fullTimeEmployees

class fullTimeEmployees extends Employee

{

    float salary;

    int des;

    fullTimeEmployees()

    {

        System.out.println("Enter Designation:");

        des = get.nextInt();

        System.out.println("Enter Salary:");

        salary = get.nextFloat();

    }

    void display()

    {

        System.out.println("=============================="+"\n"+"Full Time Employee Details"+"\n"+"=============================="+"\n");

        super.display();

        System.out.println("Salary: "+salary);

        System.out.println("Designation: "+des);

    }

}

这适用于一名员工。如果你想为 20 名员工做同样的事情，那么使用循环；

      public static void main(String args[])

      {

        fullTimeEmployees[] fullTimeEmployees= new fullTimeEmployees[20];

        partTimeEmployees[] partTimeEmployees= new partTimeEmployees[20];

        for(int i=0;i<20;i++){

          System.out.println("================================"+"\n"+"Enter Full Time Employee Details"+"\n"+"================================"+"\n");

          fullTimeEmployees[i] = new fullTimeEmployees();

          System.out.println("================================"+"\n"+"Enter Part Time Employee Details"+"\n"+"================================"+"\n");

          partTimeEmployees[i] = new partTimeEmployees();

        }

        System.out.println("================================"+"\n"+"Full Time Employee Details"+"\n"+"================================"+"\n");

        for(int i=0 ;i<20;i++){

          fullTimeEmployees[i].display();

        }

        System.out.println("================================"+"\n"+"Part Time Employee Details"+"\n"+"================================"+"\n");

        for(int i=0 ;i<20;i++){

          partTimeEmployees[i].calculatepay();

          partTimeEmployees[i].display();

        }

      }