Java面向过程实现员工管理系统（利用数组存储数据实现员工增删改查）

 学习期间代码练习，简单易懂

package lx1015;

import java.util.Scanner;

public class STSystem {
    //员工管理系统
    public static void main(String[] args) {
        Scanner cin = new Scanner(System.in);
        String[] names = new String[100];
        String[] sex = new String[100];
        int[] age = new int[100];
        float[] salary = new float[100];
        int index = 0;
        System.out.println("******************************************");
        System.out.println("*          欢迎使用员工管理系统            *");
        while (true) {
            System.out.println("******************************************");
            System.out.println("*    1.添加员工   2.修改员工   3.查询员工     *");
            System.out.println("*    4.删除员工   5.工资排名   6.退出系统     *");
            System.out.println("******************************************");
            int n = cin.nextInt();
            if (n == 1) {
                addEmployee(cin, names, sex, age, salary, index);
                index++;
            } else if (n == 2) {
                updateEmployee(cin, names, sex, age, salary, index);
            } else if (n == 3) {
                selectEmployee(cin, names, sex, age, salary, index);
            } else if (n == 4) {
                subEmployee(cin, names, sex, age, salary, index);
                index--;
            } else if (n == 5) {
                salarysort(names, sex, age, salary, index);
            } else if (n == 6) {
                break;
            } else {
                System.out.println("输入错误，请输入正确指令！");
            }
        }
        System.out.println("已退出系统！");
    }

    //添加员工
    public static void addEmployee(Scanner cin, String[] names, String[] sex, int[] age, float[] salary, int index) {
        System.out.print("姓名：");
        String addname = cin.next();
        System.out.print("性别：");
        String addsex = cin.next();
        System.out.print("年龄：");
        int addage = cin.nextInt();
        System.out.print("工资：");
        float addsalary = cin.nextFloat();
        boolean b = true;
        for (int i = 0; i < index; i++) {
            if (names[i].equals(addname)) {
                b = false;
                break;
            }
        }
        if (b) {
            names[index] = addname;
            sex[index] = addsex;
            age[index] = addage;
            salary[index] = addsalary;
            System.out.println(addname + "添加成功！");
        } else {
            System.out.println("请不要重复添加！");
        }
    }

    //删除员工
    public static void subEmployee(Scanner cin, String[] names, String[] sex, int[] age, float[] salary, int index) {
        System.out.print("请输入要删除的姓名：");
        String subname = cin.next();
        int j = 0;
        boolean b = false;
        for (int i = 0; i < index; i++) {
            if (names[i].equals(subname)) {
                j = i;
                b = true;
                break;
            }
        }
        if (b) {
            for (int i = j; i < index; i++) {
                names[i] = names[i + 1];
                sex[i] = sex[i + 1];
                age[i] = age[i + 1];
                salary[i] = salary[i + 1];
            }
            System.out.println(subname + "删除成功！");
        } else {
            System.out.println("查无此人！");
        }
    }

    //修改员工
    public static void updateEmployee(Scanner cin, String[] names, String[] sex, int[] age, float[] salary, int index) {
        System.out.print("请输入要修改的姓名：");
        String oldname = cin.next();
        int j = 0;
        boolean b = false;
        for (int i = 0; i < index; i++) {
            if (names[i].equals(oldname)) {
                j = i;
                b = true;
                break;
            }
        }
        if (b) {
            System.out.println("姓名：" + names[j] + " " + "性别：" + sex[j] + " " + "年龄：" + age[j] + " " + "工资：" + salary[j]);
            System.out.print("修改后姓名：");
            String newname = cin.next();
            System.out.print("修改后性别：");
            String newsex = cin.next();
            System.out.print("修改后年龄：");
            int newage = cin.nextInt();
            System.out.print("修改后工资：");
            Float newsalary = cin.nextFloat();
            names[j] = newname;
            sex[j] = newsex;
            age[j] = newage;
            salary[j] = newsalary;
            System.out.println("修改成功！");
        } else {
            System.out.println("查无此人！");
        }
    }

    //查询员工
    public static void selectEmployee(Scanner cin, String[] names, String[] sex, int[] age, float[] salary, int index) {
        System.out.print("请输入要查询的姓名：");
        String selectname = cin.next();
        int j = 0;
        boolean b = false;
        for (int i = 0; i < index; i++) {
            if (names[i].equals(selectname)) {
                j = i;
                b = true;
                break;
            }
        }
        if (b) {
            System.out.println("姓名：" + names[j] + " " + "性别：" + sex[j] + " " + "年龄：" + age[j] + " " + "工资：" + salary[j]);
        } else {
            System.out.println("查无此人！");
        }
    }

    //工资排名（根据工资排序）
    public static void salarysort(String[] names, String[] sex, int[] age, float[] salary, int index) {
        for (int i = 0; i < index - 1; i++) {
            int m = i;
            for (int j = i + 1; j < index; j++) {
                if (salary[j] > salary[m]) {
                    m = j;
                }
            }
            if (m != i) {
                String namem = names[m];
                String sexm = sex[m];
                int agem = age[m];
                float salarym = salary[m];
                names[m] = names[i];
                sex[m] = sex[i];
                age[m] = age[i];
                salary[m] = salary[i];
                names[i] = namem;
                sex[i] = sexm;
                age[i] = agem;
                salary[i] = salarym;
            }
        }
        for (int i = 0; i < index; i++) {
            System.out.println((i + 1) + "." + " " + "姓名：" + names[i] + " " + "性别：" + sex[i] + " " + "年龄：" + age[i] + " " + "工资：" + salary[i]);
        }
    }
}