员工管理系统（文件读写更新版）

package FileEMP;

public class Employee {

protected String ID; //员工编号

protected String name;
//员工姓名

protected String position; //员工职务

protected int holiday;
//请假天数

protected double salary;
//基本工资

public Employee(String iD, String name, String position, int holiday,

double salary) {

super();

ID = iD;

this.name = name;

this.position = position;

this.holiday = holiday;

this.salary = salary;

}

// "编号:"+ID+" 姓名:"+name+" 职位:"

// +position+" 请假天数:"+holiday+" 工资:"+salary;

@Override

public String toString() {

return "编号:"+ID+" 姓名:"+name+" 职位:"

+position+" 请假天数:"+holiday+" 工资:"+salary;

}

public Employee() {

super();

// TODO Auto-generated constructor stub

}

/**

* 工资计算

*/

public double sumSalary(double salary,int holiday) {

return salary;

}

public String getID() {

return ID;

}

public void setID(String iD) {

ID = iD;

}

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

public String getPosition() {

return position;

}

public void setPosition(String position) {

this.position = position;

}

public int getHoliday() {

return holiday;

}

public void setHoliday(int holiday) {

this.holiday = holiday;

}

public double getSalary() {

return salary;

}

public void setSalary(double salary) {

this.salary = salary;

}

}

*************************************************************************************************************

package FileEMP;

import java.text.DecimalFormat;

/**

* 普通员工

* @author

*

*/

public class CommonEmployee extends Employee {

public CommonEmployee() {

super();

// TODO Auto-generated constructor stub

}

public CommonEmployee(String iD, String name, String position, int holiday,

double salary) {

super(iD, name, position, holiday, salary);

// TODO Auto-generated constructor stub

}

/**

* 工资计算

*/

@Override

public double sumSalary(double salary,int holiday) {

double s=salary+salary*0.1+salary*0.5+200-(salary/30)*holiday;

DecimalFormat df=new DecimalFormat("#.00");

String salary1=df.format(s);

double salary2 = Double.valueOf(salary1);

return salary2;

}

}

package FileEMP;

import java.text.DecimalFormat;

/**

* 董事

* @author

*

*/

public class Director extends Employee {

public Director() {

super();

// TODO Auto-generated constructor stub

}

public Director(String iD, String name, String position, int holiday,

double salary) {

super(iD, name, position, holiday, salary);

// TODO Auto-generated constructor stub

}

/**

* 工资计算

*/

@Override

public double sumSalary(double salary,int holiday) {

double s=salary+salary*0.08+salary*0.3+2000+3000-salary/(31-holiday)*holiday;

DecimalFormat df=new DecimalFormat("#.00");

String salary1=df.format(s);

double salary2 = Double.valueOf(salary1);

return salary2;

}

}

*****************************************************************************************************************************

package FileEMP;

import java.text.DecimalFormat;

/**

* 经理

* @author

*

*/

public class Manager extends Employee {

public Manager() {

super();

// TODO Auto-generated constructor stub

}

public Manager(String iD, String name, String position, int holiday,

double salary) {

super(iD, name, position, holiday, salary);

// TODO Auto-generated constructor stub

}

/**

* 工资计算

*/

@Override

public double sumSalary(double salary,int holiday) {

double s=salary+salary*0.2+salary*0.5+500-salary/(31-holiday)*holiday;

DecimalFormat df=new DecimalFormat("#.00");

String salary1=df.format(s);

double salary2 = Double.valueOf(salary1);

return salary2;

}

}

********************************************************************************************************************

package FileEMP;

import java.io.BufferedReader;

import java.io.File;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.FileReader;

import java.io.FileWriter;

import java.io.IOException;

import java.io.PrintWriter;

import java.io.UnsupportedEncodingException;

import java.util.ArrayList;

import java.util.Scanner;

public class FileManagerEMP {

static Employee ems;

static ArrayList<Employee> empList = new ArrayList<Employee>();

static Scanner sc = new Scanner(System.in);

static String ID;

static String name;

static String position;

static int holiday;

static double salary;

static double salary1;

static int n;

private static BufferedReader reader;

@SuppressWarnings("static-access")

public static void main(String[] args) throws IOException {

FileManagerEMP fManagerEMP = new FileManagerEMP();

int flag=0;

do {

n = Prompt();

switch (n) {

case 1:

fManagerEMP.Add();

flag=1;

break;

case 2:

fManagerEMP.Del();

flag=1;

break;

case 3:

fManagerEMP.Update();

flag=1;

break;

case 4:

fManagerEMP.find();

flag=1;

break;

case 5:

fManagerEMP.findAll();

flag=1;

break;

case 0:

System.out.println("退出系统！！！");

fManagerEMP.ReadFile();

fManagerEMP.save();

flag=0;

break;

default:

break;

}

} while (flag==1);

}

public FileManagerEMP() throws IOException {

super();

//ReadFile ();

// TODO Auto-generated constructor stub

}

/**

* 从文件读出

* @throws IOException

*/

public static void ReadFile () throws IOException {

File file = new File("d:/EMP.txt");

if (file.exists()) {

try {

reader = new BufferedReader(new FileReader(file));

String tempString = null;

String[] s1 = new String[5];

int line = 1;

while ((tempString = reader.readLine()) != null) {

s1 = tempString.split("\\|");

ems = new Employee(s1[0], s1[1], s1[2], Integer

.parseInt(s1[3]), Double.parseDouble(s1[4]));

empList.add(ems);

line++;

}

reader.close();

} catch (IOException e) {

// TODO: handle exception

System.out.println("I/O Exception!!!");

}

} else {

file.createNewFile();

}

}

/**

*

* 写入文件

* @throws IOException

* @throws UnsupportedEncodingException

* @throws FileNotFoundException

*/

public static void save () throws IOException {

File f1 = new File("d:/EMP.txt");

FileWriter fw = new FileWriter(f1);

for (int i = 0; i < empList.size(); i++) {

fw.append((new String(empList.get(i).getID().toString().getBytes("utf-8"),"utf-8")+ "|"

+new String(empList.get(i).getName().toString().getBytes("utf-8"),"utf-8")+ "|"

+new String(empList.get(i).getPosition().toString().getBytes("utf-8"),"utf-8")+ "|"

+empList.get(i).getHoliday()+ "|"

+empList.get(i).getSalary()+ "|")+"\r\n");

}

fw.close();

}

// 提示

public static int Prompt() {

System.out.println("|-----------|");

System.out.println("|---1 增加---|");

System.out.println("|---2 删除---|");

System.out.println("|---3 修改---|");

System.out.println("|---4 查询---|");

System.out.println("|--5 查询所有-|");

System.out.println("|---0 退出---|");

System.out.println("|-----------|");

System.out.println("请选择业务:");

n = sc.nextInt();

return n;

}

// 插入

public static void Add() throws IOException {

ReadFile ();

System.out.println();

System.out.println("请输入员工编号:");

ID = sc.next();

System.out.println("请输入员工姓名:");

name = sc.next();

System.out.println("请输入员工职位(普通员工,经理,董事长):");

position = sc.next();

System.out.println("请输入员工请假天数:");

holiday = sc.nextInt();

System.out.println("请输入员工基本工资:");

salary = sc.nextDouble();

if (position.equals("普通员工")) {

Employee common = new CommonEmployee();

salary1 = common.sumSalary(salary, holiday);

} else if (position.equals("经理")) {

Employee common = new Manager();

salary1 = common.sumSalary(salary, holiday);

} else if (position.equals("董事长")) {

Employee common = new Director();

salary1 = common.sumSalary(salary, holiday);

} else {

System.out.println("没有该职位，请重新输入");

position = sc.next();

}

ems = new Employee(ID, name, position, holiday, salary1);

empList.add(ems);

System.out.println("插入成功！！！");

System.out.println(empList.get(empList.size()-1).toString());

save();

empList.clear();

}

/**

* 删除

*

* @return

* @throws IOException

*/

private static void Del() throws IOException {

// TODO Auto-generated method stub

ReadFile();

System.out.println("请输入员工姓名:");

name = sc.next();

int index = 0;

int i = 0;

for (i = 0; i < empList.size(); i++) {

if (name.equals(empList.get(i).getName())) {

index = i;

System.out.println(empList.get(i).toString());

break;

} else {

continue;

}

}

if (i == empList.size()) {

System.out.println("没有要删除的员工");

} else {

System.out.println("删除成功！！！");

empList.remove(index);

}

save();

empList.clear();

}

/**

* 按姓名查询

* @throws IOException

*/

public static boolean find() throws IOException {

ReadFile();

System.out.println("请输入员工姓名:");

name = sc.next();

boolean flag = false;

int i;

for (i = 0; i < empList.size(); i++) {

if (name.equals(empList.get(i).getName())) {

System.out.println(empList.get(i).toString());

flag = true;

break;

} else {

continue;

}

}

if (i == empList.size()) {

System.out.println("没有该员工");

flag = false;

}

empList.clear();

return flag;

}

/**

* 修改

* @throws IOException

*/

private static void Update() throws IOException {

// TODO Auto-generated method stub

ReadFile();

System.out.println("请输入员工姓名:");

name = sc.next();

int i;

for (i = 0; i < empList.size(); i++) {

if (name.equals(empList.get(i).getName())) {

System.out.println(empList.get(i).toString());

System.out.println("请输入员工编号:");

ID = sc.next();

System.out.println("请输入员工姓名:");

name = sc.next();

System.out.println("请输入员工职位(普通员工,经理,董事长):");

position = sc.next();

System.out.println("请输入员工请假天数:");

holiday = sc.nextInt();

System.out.println("请输入员工基本工资:");

salary = sc.nextDouble();

if (position.equals("普通员工")) {

Employee common = new CommonEmployee();

salary1 = common.sumSalary(salary, holiday);

} else if (position.equals("经理")) {

Employee common = new Manager();

salary1 = common.sumSalary(salary, holiday);

} else if (position.equals("董事长")) {

Employee common = new Director();

salary1 = common.sumSalary(salary, holiday);

} else {

System.out.println("没有该职位，请重新输入");

position = sc.next();

}

ems = new Employee(ID, name, position, holiday, salary1);

empList.set(i, ems);

System.out.println(empList.get(i).toString());

break;

} else {

continue;

}

}

if (i == empList.size()) {

System.out.println("没有该员工");

}

save();

empList.clear();

}

/**

* 查询所有

*

* @return

* @throws IOException

*/

public static void findAll() throws IOException {

//System.out.println("查询全部index1="+index);

ReadFile();

if(empList.size()==0){

System.out.println("共0条记录！！！");

}else {

for (int i = 0; i < empList.size(); i++) {

System.out.println(empList.get(i).toString());

}

}

empList.clear();

}

}