怎么用Java实现简单员工管理系统

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代码如下：

import java.util.*;public class Demo {    public static void main(String[] args) {        EmpManage em = new EmpManage();        while (true) {            System.out.println("==================员工管理系统====================");            System.out.println("==================0.加载原有信息==================");            System.out.println("==================1.加入员工=====================");            System.out.println("==================2.删除员工=====================");            System.out.println("==================3.查询员工信息==================");            System.out.println("==================4.修改员工薪水 ==================");            System.out.println("==================5.薪水排序======================");            System.out.println("==================6.平均工资、最低与最高工资=======");            System.out.println("==================7.打印全体员工信息==============");            System.out.println("==================8.退出系统=====================");            System.out.print("请选择功能【0~8】：");            Scanner reader = new Scanner(System.in);            int x;            x = reader.nextInt();            switch (x) {            case 0:                Employee e1 = new Employee("2001","轩辕戈",2002f);                Employee f = new Employee("2002","季长风",4500f);                Employee g = new Employee("2003","鱼幼薇",2560f);                Employee h = new Employee("2004","李小龙",1604f);                em.addEmp(e1);                em.addEmp(f);                em.addEmp(g);                em.addEmp(h);                System.out.println("加载完毕！");                break;            case 1:                System.out.println("请输入要增加员工的信息(编号，姓名，薪水中间用空格隔开)");                String a, b;                float c;                a = reader.next();                b = reader.next();                c = reader.nextFloat();                Employee e = new Employee(a, b, c);                em.addEmp(e);                System.out.println("加入成功！");                break;            case 2:                System.out.print("请输入要刪除員工的编号：");                String y;                y=reader.next();                em.deleteEmp(y);                System.out.println("删除成功！");                break;            case 3:                System.out.print("请输入要查询員工的编号：");                String z;                z=reader.next();                em.showinfo(z);                break;            case 4:                System.out.print("请输入要修改員工的编号：");                String w;                w=reader.next();                System.out.print("请输入要修改成的工资数目：");                float v;                v=reader.nextFloat();                em.changesal(w, v);                System.out.println("修改成功！");                break;            case 5:                System.out.println("1.按薪水从高到低的顺序排序");                System.out.println("2.按薪水从低到高的顺序排序");                System.out.print("请选择功能【1~2】：");                int t;                t=reader.nextInt();                if(t==1)                {                    em.sorthl();                }                if(t==2)                {                    em.sortlh();                }                break;            case 6:                em.hlsal();                break;            case 7:                em.showAll();                break;            case 8:                System.out.println("程序已经运行结束，下次见！");                System.exit(0);                break;            default:                System.out.print("数字范围只能在1~8之间！");            }        }    }}//雇员管理类class EmpManage{    private ArrayList al=null;    //构造方法    public EmpManage() {        al=new ArrayList();    }    //加入员工方法    public void addEmp(Employee e)    {        al.add(e);    }    //刪除员工    public void deleteEmp(String x)    {        int i;        for(i=0;i<al.size();i++)        {            Employee temp=(Employee)al.get(i);            if(temp.getEmNo().equals(x))                break;        }        al.remove(i-1);    }    //根据员工号显示该员工的信息    public void showinfo(String emNo)    {        //遍历整个ArrayList        for(int i=0;i<al.size();i++)        {            Employee em=(Employee)al.get(i);            if(em.getEmNo().equals(emNo))            {                System.out.println("编号："+em.getEmNo()+"   "+"姓名："+em.getName()+"   "+"工资："+em.getSal());            }        }    }    //修改员工的薪水    public void changesal(String x,float y)    {        for(int i=0;i<al.size();i++)        {            Employee em=(Employee) al.get(i);            if(em.getEmNo().equals(x))            {                em.setSal(y);            }                        }            }    //根据员工的薪水进行排序（从高到低）    public void sorthl()    {                String a,b;        float c;        for(int i=0;i<al.size()-1;i++)        {                        Employee e=(Employee)al.get(i);            for(int j=i+1;j<al.size();j++)            {                Employee m=(Employee)al.get(j);                if(e.getSal()<m.getSal())                {                    a=e.getEmNo();                    e.setEmNo(m.getEmNo());                    m.setEmNo(a);                                        b=e.getName();                    e.setName(m.getName());                    m.setName(b);                                        c=e.getSal();                    e.setSal(m.getSal());                    m.setSal(c);                }            }                    }        System.out.println("排序成功！");        System.out.println("打印信息如下：");        showAll();    }    //根据员工的薪水进行排序（从低到高）    public void sortlh()    {        String a,b;        float c;        for(int i=0;i<al.size()-1;i++)        {                        Employee e=(Employee)al.get(i);            for(int j=i+1;j<al.size();j++)            {                Employee m=(Employee)al.get(j);                if(e.getSal()>m.getSal())                {                    a=e.getEmNo();                    e.setEmNo(m.getEmNo());                    m.setEmNo(a);                                        b=e.getName();                    e.setName(m.getName());                    m.setName(b);                                        c=e.getSal();                    e.setSal(m.getSal());                    m.setSal(c);                }            }                    }        System.out.println("排序成功！");        System.out.println("打印信息如下：");        showAll();    }    //平均工资、最高与最低工资    public void hlsal()    {        float x=0,h,l=0;        for(int i=0;i<al.size();i++)        {            Employee e=(Employee)al.get(i);            x=x+e.getSal();        }        System.out.println("平均工资："+x/al.size());        Employee s=(Employee)al.get(0);        h=s.getSal();        l=s.getSal();        for(int i=0;i<al.size();i++)        {            Employee v=(Employee)al.get(i);            if(v.getSal()>h)                h=v.getSal();            if(v.getSal()<l)                l=v.getSal();        }        System.out.println("最高工资："+h);        System.out.println("最低工资："+l);    }    //显示所有员工的信息    public void showAll()    {        for(int i=0;i<al.size();i++)        {            Employee em=(Employee)al.get(i);            System.out.println("第"+(i+1)+"个员工:    "+"编号："+em.getEmNo()+"    "+"姓名："+em.getName()+"    "+"工资："+em.getSal());        }    }}//员工类class Employee {    private String emNo;    private String name;    private float sal;    // 构造方法    public Employee(String emNo, String name, float sal) {        super();        this.emNo = emNo;        this.name = name;        this.sal = sal;    }    // 所有的getter和setter方法    public String getEmNo() {        return emNo;    }    public void setEmNo(String emNo) {        this.emNo = emNo;    }    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }    public float getSal() {        return sal;    }    public void setSal(float sal) {        this.sal = sal;    }}

运行示例：

感谢各位的阅读，以上就是“怎么用Java实现简单员工管理系统”的内容了，经过本文的学习后，相信大家对怎么用Java实现简单员工管理系统这一问题有了更深刻的体会，具体使用情况还需要大家实践验证。这里是编程网，小编将为大家推送更多相关知识点的文章，欢迎关注！