JAVA实现电话本管理系统

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
= 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 + "]";
}