java 電子通訊錄的載入和保存代碼

思路如下：

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確定電子通訊錄的文字格式，比如純文本文件，每條通訊記錄一行，每項(xiàng)內(nèi)容之間使用tab鍵間隔

使用最基礎(chǔ)的IO讀寫(xiě)，操作此文件。

載入時(shí)從文件一行行讀入，使用split拆分各項(xiàng)內(nèi)容，存入一個(gè)對(duì)應(yīng)的通訊錄對(duì)象中，所有的通訊錄對(duì)象保存在一個(gè)List中；

保存時(shí)，以覆蓋的方式寫(xiě)入文件，以相同的格式寫(xiě)入即可。

用Java編輯通訊錄

附件：源程序清單 import java.awt.*; import java.awt.event.*; class Info { public static String name,address,mail,telephone; Info(){} } public class addressBook extends Frame implements ActionListener { private MenuItem noteAdd=new MenuItem("Add"); private MenuItem noteDel=new MenuItem("Del"); private MenuItem noteEdit=new MenuItem("Modify"); private MenuItem noteExit=new MenuItem("Exit"); private List noteList=new List(); private String[][] message=new String [1000][4]; public Info notes=new Info(); public addressBook(){ super("通訊錄 向陽(yáng)"); Menu note=new Menu("Edit"); note.add(noteAdd); note.add(noteDel); note.add(noteEdit); note.addSeparator(); note.add(noteExit); MenuBar bar=new MenuBar(); bar.add(note); setMenuBar(bar); add(noteList); noteAdd.addActionListener(this); noteDel.addActionListener(this); noteEdit.addActionListener(this); noteExit.addActionListener(this); noteList.addActionListener(this); addWindowListener(new WindowCloser()); setSize(300,400); show(); } public void actionPerformed(ActionEvent e){ if(e.getSource()==noteAdd){ notes.mail=null; notes.name=null; notes.address=null; notes.telephone=null; int index=noteList.getItemCount(); EditDialog dlg=new EditDialog(this,"添加通訊錄"); if(dlg.isOk){ message[index][0]=dlg.textName.getText(); message[index][1]=dlg.textAddress.getText(); message[index][2]=dlg.textEmail.getText(); message[index][3]=dlg.textTelephone.getText(); if (message[index][0]!=null){ String s="姓名："+message[index][0]+"；\t地址"+message[index][1]+"；\tE-mail"+message[index][2]+"；\t電話"+message[index][3]; noteList.add(s); } } dlg.dispose(); }else if(e.getSource()==noteDel){ ConfirmDialog dlg=new ConfirmDialog(this,"確認(rèn)刪除","確定要?jiǎng)h除這一條嗎？"); if (dlg.close){ noteList.remove(noteList.getSelectedIndex()); } dlg.dispose(); }else if(e.getSource()==noteEdit||e.getSource()==noteList){ int i=noteList.getSelectedIndex(); if(i!=-1){ notes.name=message[i][0]; notes.address=message[i][1]; notes.mail=message[i][2]; notes.telephone=message[i][3]; EditDialog dlg=new EditDialog(this,"修改通訊錄"); if(dlg.isOk){ message[i][0]=dlg.textName.getText(); message[i][1]=dlg.textAddress.getText(); message[i][2]=dlg.textEmail.getText(); message[i][3]=dlg.textTelephone.getText(); String s="姓名："+message[i][0]+"；\t地址"+message[i][1]+"；\tE-mail"+message[i][2]+"；\t電話"+message[i][3]; noteList.replaceItem(s,i); } dlg.dispose(); } }else if(e.getSource()==noteExit){ System.exit(0); } } private class WindowCloser extends WindowAdapter{ public void WindowClosing(WindowEvent we){ System.exit(0); } } public static void main(String[]args){ addressBook a=new addressBook(); } } class EditDialog extends Dialog implements ActionListener { private Button ok=new Button("確定"); private Button cancel=new Button("取消"); private Label labelName=new Label("姓名",Label.LEFT); private Label labelAddress=new Label("地址",Label.LEFT); private Label labelEmail=new Label("E-mail",Label.LEFT); private Label labelTelephone=new Label("電話",Label.LEFT); TextField textName=new TextField(30); TextField textAddress=new TextField(30); TextField textEmail=new TextField(30); TextField textTelephone=new TextField(30); public boolean isOk=false; private Info notes=new Info(); public EditDialog(Frame parent,String title){ super(parent,title,true); Panel pName=new Panel(); pName.setLayout(new FlowLayout()); pName.add(labelName); pName.add(textName); Panel pAddress=new Panel(); pName.setLayout(new FlowLayout()); pName.add(labelAddress); pName.add(textAddress); Panel pEmail=new Panel(); pName.add(labelEmail); pName.add(textEmail); Panel pTelephone=new Panel(); pName.add(labelTelephone); pName.add(textTelephone); Panel pInfo=new Panel(); pInfo.setLayout(new GridLayout(4,1)); pInfo.add(pName); pInfo.add(pAddress); pInfo.add(pEmail); pInfo.add(pTelephone); Panel pButton=new Panel(); pButton.setLayout(new FlowLayout()); pButton.add(ok); pButton.add(cancel); setLayout(new BorderLayout()); add("Center",pInfo); add("South",pButton); textName.setText(notes.name); textAddress.setText(notes.address); textEmail.setText(notes.mail); textTelephone.setText(notes.telephone); ok.addActionListener(this); cancel.addActionListener(this); addWindowListener(new WindowCloser()); setResizable(false); pack(); show(); } public void actionPerformed(ActionEvent ae) { if(ae.getSource()==ok){ isOk=true; this.hide(); } if(ae.getSource()==cancel){ isOk=false; this.hide(); } } private class WindowCloser extends WindowAdapter { public void windowClosing(WindowEvent we) { isOk=false; EditDialog.this.hide(); } } } class ConfirmDialog extends Dialog implements ActionListener { private Button okay=new Button("確定"); private Button cancel=new Button("取消"); private Label label=new Label(); public boolean close=false; public ConfirmDialog (Frame parent,String title,String question) { super(parent,title,true); label.setText(question); Panel buttons=new Panel(); buttons.setLayout(new FlowLayout()); buttons.add(okay); buttons.add(cancel); setLayout(new BorderLayout()); add("Center",label); add("South",buttons); okay.addActionListener(this); cancel.addActionListener(this); addWindowListener(new WindowCloser()); setResizable(false); pack(); show(); } private class WindowCloser extends WindowAdapter{ public void WindowClosing(WindowEvent we){ ConfirmDialog.this.close=false; ConfirmDialog.this.hide(); } public void actionPerformed(ActionEvent ae){ close=(ae.getSource()==okay); hide(); } }}

實(shí)現(xiàn)一個(gè)小型通訊錄。Java

Friend類(lèi)：public class Friend {

/*

* 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(lèi)：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(hù)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 求一個(gè)JAVA編寫(xiě)的通訊錄，基本的就可以。

具體方法如下：

1、定義封裝一條記錄的實(shí)體類(lèi)

2、根據(jù)實(shí)際系統(tǒng)容量，定義一個(gè)數(shù)組

3、完成系統(tǒng)中顯示全部記錄的邏輯

4、完成系統(tǒng)中添加一條記錄的邏輯

5、完成系統(tǒng)中刪除一條記錄的邏輯

6、完成系統(tǒng)中修改一條記錄的邏輯

7、全部代碼：

import java.util.Scanner;

class Contact {

String cellPhone;

String name;

}

public class Main {

private static void menu () {

System.out.println("************** 菜單 ******"

+ "************");

System.out.println(" 1.顯示全部通訊錄");

System.out.println(" 2.增加一條記錄");

System.out.println(" 3.刪除一條記錄");

System.out.println(" 4.修改一條記錄");

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("請(qǐng)輸入你得選擇：(0-4)");

cmd = scn.nextLine();

if (cmd.equals("1")) {

if (size == 0)

System.out.println("系統(tǒng)當(dāng)前無(wú)記錄！");

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("請(qǐng)輸入手機(jī)號(hào)：");

String cellphone = scn.nextLine();

System.out.print("請(qǐng)輸入姓名：");

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 + "條記錄");

}

} else if (cmd.equals("3")) {

System.out.print("請(qǐng)輸入要?jiǎng)h除的手機(jī)號(hào)：");

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("該記錄不存在！");

} else {

for (int i = index; i size; i++) {

contacts[index] = contacts[index + 1];

}

contacts[size - 1] = null;

size--;

System.out.println("刪除成功！");

}

} else if (cmd.equals("4")) {

System.out.print("請(qǐng)輸入要修改的手機(jī)號(hào)：");

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("該記錄不存在！");

} else {

System.out.print("請(qǐng)輸入姓名：");

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] = "";

}

}