java通讯录,java通讯录代码

本文目录一览：

• 1、java通讯录全部代码！
• 2、JAVA通讯录 求一个JAVA编写的通讯录，基本的就可以。
• 3、Java如何实现手机通讯录“添加”联系人电话、姓名、功能
• 4、用JAVA设计一个通讯录，保存读者信息。

java通讯录全部代码！

import java.io.BufferedOutputStream;

import java.io.File;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.FileReader;

import java.io.IOException;

import java.io.PrintWriter;

import java.util.Scanner;

public class AddList {

private String filePath = “”;

private String bakPath = “”;

private String content = “”;

Scanner sc = new Scanner(System.in);

public String readFile(){

content = “”;

if (isNull(filePath)) {

System.out.println(“文件存储路径：”);

filePath = sc.nextLine();

}

File file = new File(filePath);

FileReader fr = null;

try {

if (file.exists()) {

fr = new FileReader(file);

char[] chars = new char[1024];

int n = 0;

while((n = fr.read(chars)) != -1){

String string = new String(chars, 0, n);

content = content + string;

}

} else {

System.out.println(“文件不存在”);

}

} catch (Exception e) {

e.printStackTrace();

} finally {

if (fr != null) {

try {

fr.close();

} catch (IOException e) {

e.printStackTrace();

}

}

}

return content;

}

public void writeFile(String path){

File file = new File(path);

FileOutputStream fos = null;

mkDirs(path);

try {

fos = new FileOutputStream(file);

BufferedOutputStream bos = new BufferedOutputStream(fos);

PrintWriter pw = new PrintWriter(bos, true);

pw.print(content);

pw.flush();

} catch (FileNotFoundException e) {

e.printStackTrace();

} finally {

if (fos != null) {

try {

fos.close();

} catch (IOException e) {

e.printStackTrace();

}

}

}

}

public void writeFile(){

if (isNull(filePath)) {

System.out.println(“文件存储路径：”);

filePath = sc.nextLine();

}

File file = new File(filePath);

FileOutputStream fos = null;

mkDirs(filePath);

try {

fos = new FileOutputStream(file);

BufferedOutputStream bos = new BufferedOutputStream(fos);

PrintWriter pw = new PrintWriter(bos, true);

pw.print(content);

pw.flush();

} catch (FileNotFoundException e) {

e.printStackTrace();

} finally {

if (fos != null) {

try {

fos.close();

} catch (IOException e) {

e.printStackTrace();

}

}

}

}

public void mkDirs(String filepath){

if (filepath.indexOf(“\\”) != -1) {

filepath = filepath.replaceAll(“\\”, “/”);

}

int n = filepath.indexOf(“//”);

String path = filepath.substring(0, n) + “//”;

filepath = filepath.substring(filepath.indexOf(“//”) + 1, filepath.length());

String[] files = filepath.split(“/”);

for (int i = 0; i files.length – 1; i++) {

path = path + files[i];

File file = new File(path);

if (!file.exists()) {

file.mkdir();

}

}

}

public void addImfor(){

System.out.println(“——–增加记录———“);

String name = “”;

String tel = “”;

String email = “”;

content = readFile();

while(true){

System.out.println(“姓名：”);

name = sc.next();

System.out.println(“电话：”);

tel = sc.next();

System.out.println(“Email：”);

email = sc.next();

content = content + name + “” + tel + “” + email +”==”;

System.out.println(“0、Exit 1、继续”);

int i = sc.nextInt();

if (i == 0) {

break;

}

}

writeFile();

}

public void deleteImfor(){

System.out.println(“———删除记录———“);

String name = “”;

String[] imfors = null;

content = readFile();

while(true){

System.out.println(“你要删除的姓名是：”);

name = sc.next();

if (content.indexOf(name) != -1) {

imfors = content.split(“==”);

for (int i = 0; i imfors.length; i++) {

if (imfors[i].indexOf(name) != -1) {

imfors[i] = “”;

}

}

JAVA通讯录 求一个JAVA编写的通讯录，基本的就可以。

具体方法如下：

1、定义封装一条记录的实体类

2、根据实际系统容量，定义一个数组

3、完成系统中显示全部记录的逻辑

4、完成系统中添加一条记录的逻辑

5、完成系统中删除一条记录的逻辑

6、完成系统中修改一条记录的逻辑

7、全部代码：

import java.util.Scanner;

class Contact {

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; i size; 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 (size contacts.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; i size i contacts.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; i size; 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; i size i contacts.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如何实现手机通讯录“添加”联系人电话、姓名、功能

引流操作方式很简单1养号申请2打开Excel导入电话号码选择本地号段，导入Excel，然后按照尾号0001开始下拉拖动将得到的号码导入手机中。3添加好友打开

用JAVA设计一个通讯录，保存读者信息。

wowo我又写了一半的代码,完成了添加用的是窗口的图形化界面,要么??