JAVA员工管理小程序

Employee类:

public class Employee {

private int id

private String name

private int age

private String email

public int getId() {

return id

}

public void setId(int id) {

this.id = id

}

public String getName() {

return name

}

public void setName(String name) {

this.name = name

}

public int getAge() {

return age

}

public void setAge(int age) {

this.age = age

}

public String getEmail() {

return email

}

public void setEmail(String email) {

this.email = email

}

}

Manager类:

import java.util.ArrayList

import java.util.List

public class Manager {

public static List<Employee>employees = new ArrayList<Employee>()

public static void addEmployee(Employee employee){

employees.add(employee)

}

public static void deleteEmployee(Employee employee){

employees.remove(employee)

}

public static void updateEmployee(Employee employee){

int len = employees.size()

for(int i=0i<leni++){

Employee e = employees.get(i)

if(e.getId() == employee.getId()){

deleteEmployee(e)

addEmployee(employee)

}

}

}

public static Employee selectEmployeeById(int id){

int len = employees.size()

if(len!=0){

Employee emp = new Employee()

for(int i=0i<leni++){

Employee e = employees.get(i)

if(e.getId() == id){

emp = e

}

}

return emp

}else{

return null

}

}

public static Employee selectEmployeeByName(String name){

int len = employees.size()

if(len!=0){

Employee emp = new Employee()

for(int i=0i<leni++){

Employee e = employees.get(i)

if(e.getName().equals(name)){

emp = e

}

}

return emp

}else{

return null

}

}

public static void printEmployees(){

int len = employees.size()

if(len != 0){

for(int i=0i<leni++){

System.out.println(employees.get(i).getId()+":\t"+

employees.get(i).getName()+"\t"+

employees.get(i).getAge()+"\t"+

employees.get(i).getEmail())

}

}else{

System.out.println("无员工")

}

}

}

测试EmpManaTest类：

public class EmpManaTest {

public static void main(String[] args) {

Employee e = new Employee()

e.setId(1)

e.setName("zz")

e.setAge(20)

e.setEmail("zz@163.com")

Manager.addEmployee(e)

Employee e2 = new Employee()

e2.setId(2)

e2.setName("scof")

e2.setAge(18)

e2.setEmail("scofield@mail.com")

Manager.addEmployee(e2)

System.out.println("添加员工后：")

Manager.printEmployees()

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

Employee emp = new Employee()

emp.setId(1)

emp.setName("virus")

emp.setAge(30)

emp.setEmail("virus@163.com")

Manager.updateEmployee(emp)

System.out.println("修改员工后：")

Manager.printEmployees()

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

System.out.println("查询员工ByID：")

Employee empSelectId = Manager.selectEmployeeById(1)

System.out.println(empSelectId.getName())

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

System.out.println("查询员工ByName：")

Employee empSelectName = Manager.selectEmployeeByName("virus")

System.out.println(empSelectName.getEmail())

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

System.out.println("删除一个员工后：")

Manager.deleteEmployee(emp)

Manager.printEmployees()

}

}

这个是不是你想要的...........

这是我以前的课程设计，我把代码摘录一部分出来，希望对你有帮助！

/**

*MyFrame.java

*author:the fourth group

*version: 2007/1/27

*说明:该程序负责系统登陆框的哪者设置和实

*该应用程差轮序为首先显示的程序

*/

package com.java

import java.awt.Container

import java.awt.event.ActionEvent

import java.awt.event.ActionListener

import java.awt.event.ItemEvent

import java.awt.event.ItemListener

import javax.swing.ButtonGroup

import javax.swing.ImageIcon

import javax.swing.JButton

import javax.swing.JFrame

import javax.swing.JLabel

import javax.swing.JOptionPane

import javax.swing.JPasswordField

import javax.swing.JRadioButton

import javax.swing.JTextField

//import java.util.*

public class MyFrame implements ActionListener ,ItemListener{

//登陆界面属性

String userName

Container con

JLabel lab1,lab2,lab3,lab4

JTextField tf1

JPasswordField tf2

JRadioButton cb1,cb2,cb3

JButton bu1,bu2,bu3

JFrame fr1

public MyFrame(){

fr1=new JFrame()

con=fr1.getContentPane()

con.setLayout(null)

JLabel lab1=new JLabel("账号")

lab1.setBounds(20,70,50,20)

con.add(lab1)

lab2=new JLabel("密码")

lab2.setBounds(20,100,50,20)

con.add(lab2)

tf1=new JTextField()

tf1.setBounds(80,70,160,20)

con.add(tf1)

tf2=new JPasswordField()

tf2.setEchoChar('●')

tf2.setBounds(80,100,160,20)

con.add(tf2)

ButtonGroup cg1=new ButtonGroup()

cb1=new JRadioButton("普通虚缓信会员")

cb1.setBounds(15,135,80,20)

cb1.addItemListener(this) //普通会员

con.add(cb1)

cb2=new JRadioButton("图书管理员")

cb2.setBounds(90,135,102,20)

cb2.addItemListener(this)

con.add(cb2)

cb3=new JRadioButton("系统管理员")

cb3.setBounds(190,135,120,20)

cb3.addItemListener(this)

con.add(cb3)

cg1.add(cb1)

cg1.add(cb2)

cg1.add(cb3)

bu1=new JButton("登陆")

bu1.addActionListener(this)

bu1.setBounds(10,170,60,20)

con.add(bu1)

bu2=new JButton("取消")

bu2.setBounds(110,170,60,20)

con.add(bu2)

// bu1.addActionListener(new ActionListener(){

// public void actionPerformed(ActionEvent e){

////tf1.setText("")

////tf2.setText("")

////itemStateChanged()

// }

// })

bu2.addActionListener(new ActionListener(){

public void actionPerformed(ActionEvent e){

tf1.setText("")

tf2.setText("")

//new Operator().showframe()

}

})

bu3=new JButton("注册")

bu3.setBounds(210,170,60,20)

// con.add(bu3)

bu3.addActionListener(new ActionListener(){

public void actionPerformed(ActionEvent e){

// Face2()

}

})

lab3=new JLabel(new ImageIcon("2.jpg"))

lab3.setBounds(0,0,300,60)

con.add(lab3)

lab4=new JLabel(new ImageIcon("1.jpg"))

lab4.setBounds(0,0,300,230)

con.add(lab4)

fr1.setBounds(305,100,300,230)

fr1.setTitle("图书管理系统java版")

fr1.setResizable(false)

fr1.setVisible(true)

}

public void itemStateChanged(ItemEvent e){

//if(cb1.isSelected()){

//// p.showframe()

// try{

//// p.menu0.setEnabled(false)

////

//// p.menuItem6.setEnabled(false)

//// p.menuItem7.setEnabled(false)

//}catch(Exception d){}

//

//// p.menuItem3.setEnabled(false)

//// p.menuItem5.setEnabled(false)

//// p.menuItem6.setEnabled(false)

// }

// else if(cb2.isSelected()){

//// p.showframe()

//try{

//p.menu2.setEnabled(false)

// }catch(Exception d){}

//}

// else if(cb3.isSelected()){

//// p.showframe()

// }

}

public void actionPerformed(ActionEvent e){

//Operator p=new Operator()

if(e.getSource()==bu2)

{

this.setEnable("else")

}

else if(e.getSource()==bu1)

{

char[] password=tf2.getPassword() //获得密码

String passwordSTR=new String(password)

if(tf1.getText().equals("wp")&tf2.getText().equals("456")&!cb1.isSelected()){

JOptionPane.showMessageDialog(null,"请检查你的权限 ！")

}

if(tf1.getText().equals("wp")&tf2.getText().equals("456")&cb1.isSelected()){

JOptionPane.showMessageDialog(null,"恭喜你提交成功")

fr1.setVisible(false)

// Operator s= new Operator("设计")//普通用户

//s.ti()

}

if(tf1.getText().equals("wp")&tf2.getText().equals("123456")&cb1.isSelected()){

JOptionPane.showMessageDialog(null,"恭喜你提交成功")

fr1.setVisible(false)

// Operator s=new Operator("设计")//普通用户

//s.ti()

}

if(tf1.getText().equals("王琼琨")&tf2.getText().equals("123456")&cb1.isSelected()){

JOptionPane.showMessageDialog(null,"恭喜你提交成功")

fr1.setVisible(false)

//Operator s= new Operator("设计")//普通用户

//s.ti()//普通用户

}

if(tf1.getText().equals("陈银山")&tf2.getText().equals("123456")&cb3.isSelected()){

fr1.setVisible(false)

JOptionPane.showMessageDialog(null,"恭喜你提交成功")//高级管理员

//new Operator("设计")//普通用户

}

if(tf1.getText().equals("刘凡")&tf2.getText().equals("6598")&cb2.isSelected()){

JOptionPane.showMessageDialog(null,"恭喜你提交成功")//图书管路元

fr1.setVisible(false)

//Operator s= new Operator("设计")//图书挂历员 用户

//s.ti1()

}

if(tf1.getText().trim().equals(""))

{

JOptionPane.showMessageDialog(null,"用户名不能为空!")

return

}

if(passwordSTR.equals(""))

{

JOptionPane.showMessageDialog(null,"密码不能为空!")

return

}

else{

userName=tf1.getText().trim()

}

String strSQL

strSQL="select * from users where 用户名='"+

tf1.getText().trim()+"'and 密码='"+

passwordSTR+"'"

//rs=db.getResult(strSQL)

boolean isExist=false

try

{

//isExist=rs.first()

}

catch(Exception sqle)

{

System.out.println(sqle.toString())

}

if(!isExist)

{

JOptionPane.showMessageDialog(null,"用户名不存在或者密码不正确!")

System.out.print("连接失败")

// this.setEnable("else")

}

else

{

//try

//{

////rs.first()

////this.setEnable(rs.getString("权限").trim())//设置权限

//// db.closeConnection()//DataBase

//}

//catch(SQLException sqle2)

//{

//System.out.println(sqle2.toString())

//}

}

}

}

/**

* 设置登录用户的权限

*

*/

public void setEnable(String powerType)

{

/**

* 根据不同用户设置相应权限

*/

//Operator p=new Operator()

if(powerType.trim().equals("系统管理员"))

{

System.out.println ("系统管理员")

//p.showframe()

}

else if(powerType.trim().equals("书籍管理员"))

{

System.out.println ("书籍管理员")

//p.showframe()

//p.menuItem6.setEnabled(false)

}

else if(powerType.trim().equals("else"))

{

System.out.println ("其他")

//p.showframe()

//p.menu0.setEnabled(false)

//p.menu2.setEnabled(false)

}

}

/**

* 登陆

*/

public static void main(String args []){

new MyFrame()

}

}

---