java - 将值从不同的函数传递到单个对象

Question

我有两个方法
第一个方法有一个对象作为返回类型，
第二个方法有整数作为返回类型。
我在第一种方法中有一些值，在第二种方法中有一些值
我想做的就是将所有这些值传递给一个对象。
但问题是只有第一个方法的值正在传递，而第二个方法的值没有传递。
我正在练习封装
下面是两个文件和OUTPUT的代码。

//Employee.java file
import java.util.*;
class Employee
{
    private int employeeId;
    private String employeeName;
    private double salary;
    private double netSalary;

    /*public Employee()
    {

    }*/
    public void setEmployeeId(int a)
    {
        employeeId = a;
    }
    public void setEmployeeName(String b)
    {
        employeeName = b;
    }
    public void setSalary(double c)
    {
        salary=c;
    }
    public int getEmployeeId()
    {
        return employeeId;
    }
    public String getEmployeeName()
    {
        return employeeName;
    }
    public double getSalary()
    {
        return salary;
    }
    public void calculateNetSalary(int pfpercentage)
    {
        netSalary = salary-((salary*pfpercentage)/100);
    }
    public double getNetSalary()
    {
        return netSalary;
    }
}

import java.util.*;
class Main
{
    public static Employee getEmployeeDetails(Employee e)//1st Method
        {
            Scanner sc=new Scanner (System.in);
            try
            {
                System.out.println("Enter Id:");
                e.setEmployeeId(sc.nextInt());
                sc.nextLine();
                System.out.println("Enter Name:");
                e.setEmployeeName(sc.nextLine());
                System.out.println("Enter salary:");
                e.setSalary(sc.nextDouble());
                sc.nextLine();

            }catch(Exception e1){System.out.println("Invalid Input");}
            return e;
        }
        public static int getPFPercentage()//2nd Method
        {
            Employee e = new Employee();
            int pf=0;
            Scanner sc1=new Scanner(System.in);
            try
            {
                System.out.println("Enter PF percentage:");
                pf=sc1.nextInt();
                e.calculateNetSalary(pf);

            }catch(Exception e1){System.out.println("Invalid Input");}
            return pf;
        }
        public static void main(String args[])
        {
            Employee e = new Employee();
            getEmployeeDetails(e);
            getPFPercentage();
            System.out.println();
            System.out.println("Id : "+e.getEmployeeId());
            System.out.println("Name : "+e.getEmployeeName());
            System.out.println("Salary : "+e.getSalary());
            System.out.println("Net Salary : "+e.getNetSalary());

        }

}

OUTPUT
Enter Id:
101
Enter Name:
Harry
Enter salary:
20000
-------------1st method is used to take above input
Enter PF percentage:
7
-------------2nd method is used to take only PF percentage input

Id : 101
Name : Harry
Salary : 20000.0
Net Salary : 0.0

净工资的计算在文件 Employee.java 中，函数名称为“calculateNetSalary”

Answer 1

在调用方法getNetSalary()之前，您尚未计算netSalary；

public void calculateNetSalary(int pfpercentage) //This function should be called first.
{
    netSalary = salary-((salary*pfpercentage)/100);
}
public double getNetSalary()
{
    return netSalary;
}

查看下面的代码以更好地理解:

System.out.println("Salary : "+e.getSalary());
e.calculateNetSalary(5); //Add this line and you will get the required output.
System.out.println("Net Salary : "+e.getNetSalary());