实例之纳税额计算

package unit4;

public class TaxPolicy {
    public static int getDeduct(double income) {
        income=income-3500;
        if(income<=1500) return 0;
        else if(income<=4500) return 105;
        else if(income<=9000) return 555;
        else if(income<=35000) return 1005;
        else if(income<=55000) return 2755;
        else if(income<=80000) return 5505;
        else return 13505;
        
    }
    public static int taxRate(double income) {
        income=income-3500;
        if(income<=1500) return 3;
        else if(income<=4500) return 10;
        else if(income<=9000) return 20;
        else if(income<=35000) return 25;
        else if(income<=55000) return 30;
        else if(income<=80000) return 35;
        else return 45;
        
        
    }

}

package unit4;

public class Employee2 {
    private String staff_no;
    private String name;
    private double salary;
    private double insurancesandfund;
    public Employee2(String ID,String name) {
        this.staff_no=ID;
        this.name=name;
    }
    Employee2(String ID,String name,double salary,double insurancesandfund){
        this.staff_no=ID;
        this.name=name;
        this.salary=salary;
        this.insurancesandfund=insurancesandfund;
    }
    public String getStaff_no() {
        return staff_no;
    }
    public void setStaff_no(String staff_no) {
        this.staff_no = staff_no;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public double getSalary() {
        return salary;
    }
    public void setSalary(double salary) {
        this.salary = salary;
    }
    public double getInsurancesandfund() {
        return insurancesandfund;
    }
    public void setInsurancesandfund(double insurancesandfund) {
        this.insurancesandfund = insurancesandfund;
    }
    public double getTax() {
        return (salary-insurancesandfund-3500)*TaxPolicy.taxRate(salary)/100.0-TaxPolicy.getDeduct(salary);
    }
    public double getRealIncome() {
        return salary-getTax()-insurancesandfund;
    }
}

package unit4;

import java.util.Scanner;

public class PayrollTax {

    public static void main(String[] args) {
        Employee2 emp1=new Employee2("1001","张三",6581,812.82);
        Employee2 emp2 = new Employee2("1002","李四");
        System.out.println("编号："+emp1.getStaff_no()+",姓名："+emp1.getName()+" 的应纳税额是："+emp1.getTax()+" 税后工资是："+emp1.getRealIncome());
        Scanner mykey = new Scanner(System.in);
        System.out.println("请输入李四应发的工资：");
        double income=mykey.nextDouble();
        emp2.setSalary(income);
        System.out.println("请输入李四应缴纳的五险一金：");
        double insurance =mykey.nextDouble();
        emp2.setInsurancesandfund(insurance);
        System.out.println("编号："+emp2.getStaff_no()+",姓名："+emp2.getName()+" 的应纳税额是："+emp2.getTax()+" 税后工资是："+emp2.getRealIncome());
    }
}