實(shí)現(xiàn)一個(gè)小型通訊錄。Java

Friend類：public class Friend {

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/*

* 姓名

*/

private String name;

/*

* 電話

*/

private String telephone;

/*

* 郵箱

*/

private String email;

/*

* 公司

*/

private String company; public String getName() {

return name;

} public void setName(String name) {

this.name = name;

} public String getTelephone() {

return telephone;

} public void setTelephone(String telephone) {

this.telephone = telephone;

} public String getEmail() {

return email;

} public void setEmail(String email) {

this.email = email;

} public String getCompany() {

return company;

} public void setCompany(String company) {

this.company = company;

} public String toString() {

StringBuffer str = new StringBuffer(); str.append("姓名：" + name).append("\n");

str.append("電話：" + telephone).append("\n");

str.append("郵箱：" + email).append("\n");

str.append("公司：" + company).append("\n");

str.append("-----------------------------------------\n");

return str.toString();

}

}AddFriend類：public class AddFriend { /**

* 主方法 程序的入口

*/

public static void main(String[] args) {

ListFriend friendList = new ArrayListFriend();

char isGo = 'Y';

int i = 0;

do {

Friend friend = new Friend();

System.out.println("請(qǐng)輸入第" + (i + 1) + "位朋友的姓名：");

InputStreamReader reader = new InputStreamReader(System.in);

String str = "";

try {

str = (new BufferedReader(reader)).readLine();

} catch (IOException e) {

e.printStackTrace();

}

friend.setName(str); System.out.println("請(qǐng)輸入第" + (i + 1) + "位朋友的電話："); try {

str = (new BufferedReader(reader)).readLine();

} catch (IOException e) {

e.printStackTrace();

}

if (str.matches("\\d*") str.length() == 11) {// 判斷用戶輸入的電話是否符合標(biāo)準(zhǔn)

friend.setTelephone(str);

} else {

System.out.println("電話號(hào)碼輸入有誤，請(qǐng)重新輸入！");

continue;

} System.out.println("請(qǐng)輸入第" + (i + 1) + "位朋友的郵箱："); try {

str = (new BufferedReader(reader)).readLine();

} catch (IOException e) {

e.printStackTrace();

}

friend.setEmail(str); System.out.println("請(qǐng)輸入第" + (i + 1) + "位朋友的公司："); try {

str = (new BufferedReader(reader)).readLine();

} catch (IOException e) {

e.printStackTrace();

}

friend.setCompany(str); friendList.add(friend); i++; System.out.println("是否繼續(xù)添加？(Y/N):");

String go = "";

try {

go = (new BufferedReader(reader)).readLine();

} catch (IOException e) {

e.printStackTrace();

}

isGo = go.charAt(0);

} while (isGo == 'Y' || isGo == 'y'); for (int j = 0; j friendList.size(); j++) {

System.out.println(friendList.get(j).toString());

}

}

}

java通訊錄全部代碼！

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("文件存儲(chǔ)路徑：");

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("文件存儲(chǔ)路徑：");

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("http://");

String path = filepath.substring(0, n) + "http://";

filepath = filepath.substring(filepath.indexOf("http://") + 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("--------增加記錄---------");

String name = "";

String tel = "";

String email = "";

content = readFile();

while(true){

System.out.println("姓名：");

name = sc.next();

System.out.println("電話：");

tel = sc.next();

System.out.println("Email：");

email = sc.next();

content = content + name + "" + tel + "" + email +"==";

System.out.println("0、Exit 1、繼續(xù)");

int i = sc.nextInt();

if (i == 0) {

break;

}

}

writeFile();

}

public void deleteImfor(){

System.out.println("---------刪除記錄---------");

String name = "";

String[] imfors = null;

content = readFile();

while(true){

System.out.println("你要?jiǎng)h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] = "";

}

}

用JAVA編寫一個(gè)班級(jí)通訊錄

1）java form，jlable 、textField、button 神馬 的 GridBagLayout布局搞一發(fā)

2）JDBC 往數(shù)據(jù)庫(kù)搞一搞；

3）數(shù)據(jù)庫(kù)排序取出，或者取出后代碼排個(gè)序

4）步驟2已經(jīng)寫入數(shù)據(jù)庫(kù)，下次從數(shù)據(jù)庫(kù)區(qū)，不會(huì)丟失

5）搞一個(gè)方法，專門用于顯示，每計(jì)算一次，調(diào)用這個(gè)方法

另；應(yīng)該搞個(gè)登陸的，管理總要有權(quán)限控制的

網(wǎng)站題目：簡(jiǎn)單通訊錄java代碼,java簡(jiǎn)單通訊錄管理系統(tǒng)
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