java实现电话本管理系统

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) =HcEagMJ= 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：

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