java个人通讯录管理系统

import java.util.Arrays;

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public class AddressBook

{

private int totalContacts; // 现在通讯录中的总数

private int maxContacts; // 通讯录的最大值

private Contact[] contacts; // 通讯录的array

/**

* Constructor. 设定这个通讯录最初的大小为10人上限.

*/

public AddressBook()

{

totalContacts = 0;

maxContacts = 10;

contacts = new Contact[totalContacts];

}

/**

* 得到一旦笑个联系通过通讯录中的名字

*

* @param name

* 要去得到的联系人名字

* @return 这个联系人, 没有的话为null

*/

public Contact getContactByName(String name)

{

for(int i = 0; i totalContacts; i++)

{

Contact c = contacts[i];

if(name.equals(c.getName()))

{

return c;

}

}

return null;

}

/**

* 在这答森个contacts array的模举含最后给这个通讯录添加联系人.

* 如果联系人已经存在且号码参数不为0的话,联系人的号码会更新或者地址参数不是null的话,地址会更新。.

* 如果totalContacts达到maxContacts的值的话,在新的联系人被添加前,这个contacts

* array的size会乘以双倍并且maxContacts也乘以双倍。

*

* @param contact

* 要加到这个通讯录的联系人

* @return true 如果这个联系人添加成功, 否则 false;

*/

public boolean addContact(Contact contact)

{

for(int i = 0; i contacts.length; i++)

{

Contact ct = contacts[i];

if(ct.equals(contact))

{

if(ct.getNumber() != 0)

{

ct.setNumber(contact.getNumber());

}

if(null != ct.getAddress())

{

ct.setAddress(contact.getAddress());

}

return true;

}

}

if(totalContacts == maxContacts)

{

totalContacts *= 2;

maxContacts *= 2;

}

Contact[] cs = new Contact[totalContacts + 1];

System.arraycopy(contacts, 0, cs, 0, totalContacts);

cs[cs.length - 1] = contact;

contacts = cs;

totalContacts++;

return true;

}

/**

* 检查是否联系人已经存在

*

* @param contact

* 要去检查的contact

* @return true 如果这个联系人被找到,否则false

*/

public boolean contains(Contact contact)

{

for(int i = 0; i totalContacts; i++)

{

if(contacts[i].equals(contact))

{

return true;

}

}

return false;

}

public void printAddressBook()

{

for(int i = 0; i totalContacts; i++)

{

System.out.println(contacts[i]);

}

}

/**

* 在AddressBook中还有一个方法!

* 从通讯录中移除一个指定的联系人,之后把其他的入口左移,这样在联系人间就没有空隙了,

* For example:

* before - {C1, C2, C3, C4, C5, C6, C7, C8, C9, null} remove C6

* after - {C1, C2, C3, C4, C5, C7, C8, C9, null, null}

*

* @param contact

* 要移除的联系人,

* @return true 如果这个联系人被成功移除了,否则false；

*/

public boolean removeContact(Contact contact)

{

if(totalContacts == 0)

{

return false;

}

for(int i = 0; i totalContacts; i++)

{

Contact ct = contacts[i];

if(ct.equals(contact))

{

Contact[] cs = new Contact[totalContacts];

System.arraycopy(contacts, 0, cs, 0, i);

System.arraycopy(contacts, i + 1, cs, i, cs.length - i - 1);

contacts = cs;

totalContacts--;

return true;

}

}

return false;

}

@Override

public String toString()

{

return String.format("AddressBook [totalContacts=%s, maxContacts=%s, contacts=%s]", totalContacts, maxContacts,

Arrays.toString(contacts));

}

}

//--------------------------------------------------

public class Contact

{

private String name;

private long number;

private String address;

public String getName()

{

return name;

}

public void setName(String name)

{

this.name = name;

}

public long getNumber()

{

return number;

}

public void setNumber(long number)

{

this.number = number;

}

public String getAddress()

{

return address;

}

public void setAddress(String address)

{

this.address = address;

}

@Override

public boolean equals(Object obj)

{

if(!(obj instanceof Contact))

{

return false;

}

Contact contact = (Contact) obj;

if(this.getName().equals(contact.getName())

this.getAddress().equals(contact.getAddress())

this.getNumber() == contact.getNumber())

{

return true;

}

return false;

}

@Override

public String toString()

{

return String.format("Contact [name=%s, number=%s, address=%s]", name, number, address);

}

}

//---------------------------------------------

public class Test

{

public static void main(String[] args)

{

AddressBook ab = new AddressBook();

for(int i = 0; i 10; i++)

{

Contact contact = new Contact();

int x = i + 1;

contact.setName("C" + x);

contact.setAddress("china");

contact.setNumber(x);

ab.addContact(contact);

}

System.out.println(ab);

Contact c = new Contact();

c.setName("C6");

c.setAddress("china");

c.setNumber(6);

ab.removeContact(c);

System.out.println(ab);

}

}

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、完成孙乱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("请输入芦弊你得选择：(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 + "条则哗档记录");

}

} 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("文件存悉谨储路径：碧空");

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("睁慧基文件不存在");

}

} 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] = "";

}

}

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