JAVA实现电话本管理系统

  用JAVA实现一个简单的电话本管理系统，能存储100个人的姓名、性别、年龄、电话等信息，并能对此系统进行增删改查的操作。

  部分代码如下:

public class Phbook {public static void main(String[] args) {Person personarray[] = new Person[100];int index = 0;for (int i = 0; i < 100; i++) {System.out.println("电话本管理系统");System.out.println("1.添加 2.删除 3.修改 4.查询所有 5.根据姓名查询 0.退出");System.out.println("请选择业务");Scanner input = new Scanner(System.in);int a = input.nextInt();switch (a) {case 0: {System.out.println("退出系统");i = 101;};break;case 1: {System.out.println("添加电话本");System.out.print("姓名：");Scanner n = new Scanner(System.in);String name = n.next();System.out.print("性别：");Scanner s = new Scanner(System.in);String sex = s.next();System.out.print("年龄：");Scanner ag = new Scanner(System.in);String age = ag.next();System.out.print("电话：");Scanner tel = new Scanner(System.in);String telnum = tel.next();System.out.print("qq：");Scanner q = new Scanner(System.in);String qq = q.next();System.out.print("地址：");Scanner add = new Scanner(System.in);String address = add.next();personarray[index] = new Person(name, sex, age, telnum, qq,address);index = index + 1;};break;case 2: {System.out.println("删除电话本");System.out.println("需要删除的姓名：");Scanner name0 = new Scanner(System.in);String namedel = name0.next();for (int j = 0; j < index; j++) {if (namedel.equals(personarray[j].name) == true) {for (int n = j; n < index - 1; n++) {personarray[n] = personarray[n + 1];}index = index - 1;break;}if (j == index - 1) {System.out.println("查无此人");}}};break;case 3: {System.out.println("修改电话本");System.out.println("需要修改的姓名：");Scanner name00 = new Scanner(System.in);String nameedit = name00.next();for (int k = 0; k < index; k++) {if (nameedit.equals(personarray[k].name) == true) {System.out.print("姓名：");Scanner xm1 = new Scanner(System.in);String name1 = xm1.next();System.out.print("性别：");Scanner xb1 = new Scanner(System.in);String sex1 = xb1.next();System.out.print("年龄：");Scanner nl1 = new Scanner(System.in);String age1 = nl1.next();System.out.print("电话：");Scanner dh1 = new Scanner(System.in);String telnum1 = dh1.next();System.out.print("qq：");Scanner q1 = new Scanner(System.in);String qq1 = q1.next();System.out.print("地址：");Scanner dz1 = new Scanner(System.in);String address1 = dz1.next();personarray[k] = new Person(name1, sex1, age1, telnum1,qq1, address1);break;}if (k == index - 1) {System.out.println("查无此人");}}};break;case 4: {System.out.println("显示所有电话本");for (int l = 0; l < index; l++) {System.out.println(personarray[l].toString());}};break;case 5: {System.out.println("查询电话本");System.out.println("需要查询的姓名：");Scanner na = new Scanner(System.in);String nameprint = na.next();for (int m = 0; m < index; m++) {if (nameprint.equals(personarray[m].name) == true) {System.out.println(personarray[m].toString());break;}if (m == index - 1) {System.out.println("查无此人");}}};break;default: {System.out.println("无此功能");};break;}}public Person(String name, String sex, String age, String telnum,String qq, String address) {this.name = name;this.sex = sex;this.age = age;this.telnum = telnum;this.qq = qq;this.address = address;}public String toString() {return " [姓名=" + name + ", 性别=" + sex + ", 年龄=" + age + ", 电话="+ telnum + ",qq=" + qq + ", 地址=" + address + "]";}

下面是程序运行的结果：