Question

任务说明

我有以下问题陈述：使用以下私有成员变量创建Employee类。

int employeeId
String employeeName
double salary
double netSalary

在Employee类中包括适当的getter和setters方法。在Employee类中编写以下方法： public void computeNetSalary（int pfpercentage）-此方法应以PF百分比作为参数。从薪水中扣除PF金额并设置netSalary。

创建一个Main类，该类具有main方法，该方法调用该方法以获取输入并打印详细信息，如示例中所示。

还要编写一个方法：

公共静态Employee getEmployeeDetails（）-获取雇员详细信息-id，姓名和薪水，并返回雇员对象。

public static int getPFPercentage（）-获取PF百分比并返回相同的值

在main方法中，调用上述两个方法，然后在Employee类中调用calculateNetSalary方法，并打印输出，如下所示。

样本输入1：

输入ID： 101 输入名字：维维克输入薪水： 20000 输入PF百分比： 7

示例输出1：

Id：101

名称：Vivek

工资：20000.0

净薪金：18600.0

我做了什么

我在Employee.java中编写了getter＆setters方法和calculateNetSalary（）方法。我陷入了困境，我应该在Main.java中写什么内容

Employee.java

public class Employee{

    private int employeeId;
    private String employeeName;
    private double salary;
    private double netSalary;

    //setters
    public void setEmployeeId(int employeeId){
        this.employeeId=employeeId;
    }
    public void setEmployeeName(String employeeName){
        this.employeeName=employeeName;
    }
    public void setSalary(double salary){
        this.salary=salary;
    }
    public void netSalary(double netSalary){
        this.netSalary=netSalary;
    }

    //getters
    public int getEmployeeId(){
        return employeeId;
    }
    public String getEmployeeName(){
        return employeeName;
    }
    public double getSalary(){
        return salary;
    }
    public double getNetSalary(){
        return netSalary;
    }

    public void calculateNetSalary(int pfpercentage){

        pfamount=salary*pfpercentage;
        netSalary=salary-pfamount;
    }
}

Main.java

import java.util.Scanner;
public class Main{
    public staic void main(String[] args){
        Scanner sc = new Scanner(System.in);
        Employee emp = new Employee();

        System.out.println("Enter Id:"+setEmployeeId(sc.nextInt()))
        System.out.println("Enter Name:"+setEmployeeName(sc.next()));
        System.out.println("Enter salary:"+setSalary(sc.nextDouble()));

        System.out.println("Enter PF percentage:");
        double pfpercentage = sc.nextDouble();

        public static Employee getEmployeeDetails(){


        }

        public static int getPFPercentage(){

        }

    }
}

我无法完成Main.java，因为不确定如何编写。

Answer 1

这应该是您的代码：

 public void main(String[] args){
        Scanner sc = new Scanner(System.in);
        Employee emp = new Employee();

        emp.setEmployeeId(sc.nextInt());
        emp.setEmployeeName(sc.next()) ;
        emp.setSalary(sc.nextDouble());

        System.out.println("Enter PF percentage:");
        double pfpercentage = sc.nextDouble();
        emp.calculateNetSalary(pfpercentage);
        System.out.println("Salay is " + emp.getNetSalary());
    }

还请注意，您尚未定义pfamount的类型：

 public void calculateNetSalary(double pfpercentage){

        double pfamount=salary*pfpercentage;
        netSalary=salary-pfamount;
    }

您不能在main（）方法内定义其他方法。您可以调用其中的其他方法（随意）。

Answer 2

您的代码中有几个问题。首先查看 Employee.java ，有几个问题：

您用于设置netSalary的方法被声明为public void netSalary(double netSalary)，而应该是public void SetNetSalary(double netSalary)
public void calculateNetSalary(int pfpercentage)中的计算看起来不正确。如果您要传递双精度值（即2代表2％），则需要将其除以100，以将数字转换为百分比。
如果要使用变量，则需要声明变量（名称pfamount必须先声明为double，然后才能为其赋值）。
您可能需要一种public String toString()方法来打印出您的员工对象。

所以您最终会得到这样的东西：

public class Employee{

  private int employeeId;
  private String employeeName;
  private double salary;
  private double netSalary;

//setters
  public void setEmployeeId(int employeeId){
      this.employeeId=employeeId;
  }

  public void setEmployeeName(String employeeName){
      this.employeeName=employeeName;
  }

  public void setSalary(double salary){
      this.salary=salary;
  }

  public void setNetSalary(double netSalary){
      this.netSalary=netSalary;
  }

  //getters
  public int getEmployeeId(){
      return employeeId;
  }

  public String getEmployeeName(){
      return employeeName;
  }

  public double getSalary(){
      return salary;
  }

  public double getNetSalary(){
      return netSalary;
  }

  public void calculateNetSalary(double pfpercentage) {
      double pfamount = salary * (pfpercentage / 100);
      netSalary = salary - pfamount;
  }

  @Override
  public String toString() {
      String output = new StringBuffer()
              .append("Id: ").append(employeeId)
              .append(System.lineSeparator()).append("Name: ").append(employeeName)
              .append(System.lineSeparator()).append("Salary: ").append(salary)
              .append(System.lineSeparator()).append("Net Salary: ").append(netSalary).toString();
      return output;
  }
}

您的 Main.java 也有一些问题：

您不能在方法中声明方法。
这不是实现java.util.Scanner ... System.out.println("Enter Id:"+setEmployeeId(sc.nextInt()))的正确方法。基本上，扫描仪部分需要与System.out分开（请记住System.out所做的只是打印出文本，它不等待扫描仪的输入）。
如果我正确理解了您的问题，则需要将一些逻辑从主要方法中移出，移至getEmployeeDetails()和getPFPercentage()

所以您最终会得到这样的东西：

import java.util.Scanner;

public class EmployeeSalaryCalculation {

private Scanner scanner;

  public EmployeeSalaryCalculation() {
    scanner = new Scanner(System.in);
  }

  public Employee getEmployeeDetails() {
      Employee employee = new Employee();
      System.out.println("Enter Id:");
      employee.setEmployeeId(scanner.nextInt());
      System.out.println("Enter Name:");
      employee.setEmployeeName(scanner.next());
      System.out.println("Enter salary:");
      employee.setSalary(scanner.nextDouble());
      return employee;
  }

  public double getPFPercentage(){
      System.out.println("Enter PF percentage:");
      return scanner.nextDouble();
  }

  public static void main(String[] args) {
      EmployeeSalaryCalculation employeeSalaryCalculation = new EmployeeSalaryCalculation();
      Employee employee = employeeSalaryCalculation.getEmployeeDetails();
      employee.calculateNetSalary(employeeSalaryCalculation.getPFPercentage());
      System.out.println(employee.toString());
  }
}

Answer 3

您已经有了一个好的开始。但是，存在一些语法错误，例如忘记用分号结束某些语句。另外，据我所知，Java不支持嵌套方法，因此您不应在getEmployeeDetails()方法内部使用方法getPFPercentage()和main。我已经重新排列了代码以更正此问题。

我对您的Employee类进行了其他更改，尤其是calculateNetSalary方法。 pfPercentage除以100后再乘以salary。同样，在使用适当的setter方法计算实例变量netSalary之后，将其设置为局部变量netSalary。方法netSalary也已重命名为setNetSalary，因为它更能说明方法的作用。

除了根据规范完成Main类之外，我没有对您的代码进行任何其他更改。如果代码中还有其他部分需要说明，您可以对此发表评论。

Main.java

import java.util.Scanner;

public class Main {

    private static Scanner scanner = new Scanner(System.in);

    public static void main(String[] args){
        Employee newEmployee = getEmployeeDetails();
        double pfPercentage = getPFPercentage();

        System.out.println();
        System.out.println("Confirm employee details: ");
        System.out.println("Id : " + newEmployee.getEmployeeId());
        System.out.println("Name : " + newEmployee.getEmployeeName());
        System.out.println("Salary : " + newEmployee.getSalary());

        newEmployee.calculateNetSalary(pfPercentage);
        System.out.println("Net Salary : " + newEmployee.getNetSalary());
    }

    /**
     * Gets the details of a new employee from user input
     * @return the new {@link Employee}
     */
    public static Employee getEmployeeDetails() {
        Employee employee = new Employee();
        System.out.println("Enter Id: ");
        employee.setEmployeeId(scanner.nextInt());
        System.out.println("Enter Name: ");
        employee.setEmployeeName(scanner.next());
        System.out.println("Enter salary: ");
        employee.setSalary(scanner.nextDouble());
        return employee;
    }

    /**
     * Gets the PF percentage from user input
     * @return the PF percentage
     */
    public static double getPFPercentage(){
        System.out.println("Enter PF percentage:");
        double pfPercentage = scanner.nextDouble();
        return pfPercentage;
    }

}

Employee.java

public class Employee{

    private int employeeId;
    private String employeeName;
    private double salary;
    private double netSalary;

    // Setters
    public void setEmployeeId(int employeeId){
        this.employeeId = employeeId;
    }

    public void setEmployeeName(String employeeName){
        this.employeeName = employeeName;
    }

    public void setSalary(double salary){
        this.salary = salary;
    }

    private void setNetSalary(double netSalary){
        this.netSalary = netSalary;
    }

    // Getters
    public int getEmployeeId(){
        return employeeId;
    }

    public String getEmployeeName(){
        return employeeName;
    }

    public double getSalary(){
        return salary;
    }

    public double getNetSalary(){
        return netSalary;
    }

    public void calculateNetSalary (double pfPercentage){
        double pfAmount = salary * (pfPercentage / 100);
        double netSalary = salary - pfAmount;
        this.setNetSalary(netSalary);
    }
}

员工薪金计算

任务说明

我做了什么

3 个答案: