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:
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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 + "]";
}
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下面是程序运行的结果：
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。
原文链接：http://blog.csdn.net/hpepm6_2/article/details/48245823