电话本的java程序代码电话本的java程序代码怎么写( 六 )

String cellPhone;
String name;
}
public class Main {
private static void menu () {
System.out.println("************** 菜单 ******"
+ "************");
System.out.println(" 1.显示全部通讯录");
System.out.println(" 2.增加一条记录");
System.out.println(" 3.删除一条记录");
System.out.println(" 4.修改一条记录");
System.out.println(" 0.退出");
}
public static void main(String[] args) {
Scanner scn = new Scanner(System.in);
Contact[] contacts = new Contact[200];
int size = 0;
String cmd = "";
do {
menu();
System.out.print("请输入你得选择：(0-4)");
cmd = scn.nextLine();
if (cmd.equals("1")) {
if (size == 0)
System.out.println("系统当前无记录！");
else
for (int i = 0; isize; i++) {
System.out.println(contacts[i].name + ":"
+ contacts[i].cellPhone);
}
} else if (cmd.equals("2")) {
System.out.print("请输入手机号：");
String cellphone = scn.nextLine();
System.out.print("请输入姓名：");
String name = scn.nextLine();
Contact contact = new Contact();
contact.cellPhone = cellphone;
contact.name = name;
if (sizecontacts.length) {
contacts[size++] = contact;
System.out.println("添加成功！");
} else {
System.out.println("你最多只能添加" +
contacts.length + "条记录");
}
} else if (cmd.equals("3")) {
System.out.print("请输入要删除的手机号：");
String cellphone = scn.nextLine();
int index = -1;
for (int i = 0; isizeicontacts.length;
i++) {
if (contacts[i].cellPhone.equals(cellphone)) {
index = i;
break;
}
}
if (index == -1) {
System.out.println("该记录不存在！");
} else {
for (int i = index; isize; i++) {
contacts[index] = contacts[index + 1];
}
contacts[size - 1] = null;
size--;
System.out.println("删除成功！");
}
} else if (cmd.equals("4")) {
System.out.print("请输入要修改的手机号：");
String cellphone = scn.nextLine();
int index = -1;
for (int i = 0; isizeicontacts.length;
i++) {
if (contacts[i].cellPhone.equals(cellphone)) {
index = i;
break;
}
}
if (index == -1) {
System.out.println("该记录不存在！");
} else {
System.out.print("请输入姓名：");
String name = scn.nextLine();
contacts[index].name = name;
}
}
} while (!cmd.equals("0"));
System.out.println("退出成功！");
scn.close();
System.exit(0);
}
}
java的电话簿程序==================================
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
public class PhoneBook {
// 代表有多少条记录
private intsize= 0;
// 用来记录信息的数组
private Phone[] phones= new Phone[100];
private String filename = "phonebook.txt";
public PhoneBook() {
try {
read();
} catch (IOException e) {
}
}
private void read() throws IOException {
File f = new File(filename);
if (!f.exists()) {
return;
}
BufferedReader br = new BufferedReader(new FileReader(filename));
String line = null;
while ((line = br.readLine()) != null) {
if (line.trim().length()0) {
Phone phone = new Phone(line);
addPhone(phone);
}
}
br.close();
}
public void store() throws IOException {
File f = new File(filename);
BufferedWriter bw = new BufferedWriter(new FileWriter(filename));
for (Phone phone : phones) {

电话本的java程序代码 电话本的java程序代码怎么写( 六 )

电话本的java程序代码电话本的java程序代码怎么写( 六 )