附件：源程序清单 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("通讯录 向阳"); 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,"添加通讯录"); 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电话"+message[index][3]; noteList.add(s); } } dlg.dispose(); }else if(e.getSource()==noteDel){ ConfirmDialog dlg=new ConfirmDialog(this,"确认删除","确定要删除这一条吗？"); 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,"修改通讯录"); 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电话"+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("确定"); 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("电话",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("确定"); 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(); } }}
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Friend类：public class Friend {
/*
* 姓名
*/
private String name;
/*
* 电话
*/
private String telephone;
/*
* 邮箱
*/
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("电话：" + telephone).append("\n");
str.append("邮箱：" + email).append("\n");
str.append("公司：" + company).append("\n");
str.append("-----------------------------------------\n");
return str.toString();
}
}AddFriend类：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("请输入第" + (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("请输入第" + (i + 1) + "位朋友的电话："); try {
str = (new BufferedReader(reader)).readLine();
} catch (IOException e) {
e.printStackTrace();
}
if (str.matches("\\d*") str.length() == 11) {// 判断用户输入的电话是否符合标准
friend.setTelephone(str);
} else {
System.out.println("电话号码输入有误，请重新输入！");
continue;
} System.out.println("请输入第" + (i + 1) + "位朋友的邮箱："); try {
str = (new BufferedReader(reader)).readLine();
} catch (IOException e) {
e.printStackTrace();
}
friend.setEmail(str); System.out.println("请输入第" + (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("是否继续添加？(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());
}
}
}
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] = "";
}
}
楼上应该放出答案了，我这里只是用其他界面显示，不懂Swing的可以略过，（代码比较粗略，不一定符合规范，照搬需谨慎）
import java.awt.Dimension;
import java.awt.GridLayout;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.util.ArrayList;
import java.util.List;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JTextField;
public class Demo extends JFrame {
ListString pnos = new ArrayListString();
public static void main(String[] args) {
new Demo();
}
public Demo() {
StringBuffer sb = new StringBuffer("htmlbody");
while (pnos.size() 15) {// "随机"生成电话号码，可以不理他
String telString = getRandomTel();
if (!pnos.contains(telString)) {
pnos.add(telString);
sb.append(telString);
if (pnos.size() % 3 == 0) {
sb.append("br/");
} else if (pnos.size() 15) {
sb.append(",");
}
}
}
sb.append("/body/html");
JLabel label = new JLabel(sb.toString());
final JTextField input = new JTextField();
final JLabel result = new JLabel();
this.setLayout(new GridLayout(3, 1));
this.add(label);
this.add(input);
this.add(result);
this.setSize(new Dimension(300, 500));
this.setDefaultCloseOperation(EXIT_ON_CLOSE);
this.setLocationRelativeTo(null);
this.setVisible(true);
input.addKeyListener(new KeyAdapter() {
@Override
public void keyReleased(KeyEvent keyevent) {
result.setText(getMatchNo(input.getText()));
}
});
}
/**
*
* @param perfix
* @return
*/
public String getMatchNo(String perfix) {
StringBuffer sb = new StringBuffer("htmlbody");
if (perfix != null !perfix.trim().equals(""))
for (String string : pnos) {// 这里是你要的部分，遍历“号码本”匹配是否为输入数字的开头
if (string.startsWith(perfix)) {
sb.append(string).append("br/");
}
}
sb.append("/body/html");
return sb.toString();
}
private static String[] telFirst = "134,135,136,137,138,139,150,151,152,157,158,159,130,131,132,155,156,133,153"
.split(",");
private static String getRandomTel() {
int index = getNum(0, telFirst.length - 1);
String first = telFirst[index];
String second = String.valueOf(getNum(1, 888) + 10000).substring(1);
String thrid = String.valueOf(getNum(1, 9100) + 10000).substring(1);
return first + second + thrid;
}
public static int getNum(int start, int end) {
return (int) (Math.random() * (end - start + 1) + start);
}
}
思路如下：
确定电子通讯录的文字格式，比如纯文本文件，每条通讯记录一行，每项内容之间使用tab键间隔
使用最基础的IO读写，操作此文件。
载入时从文件一行行读入，使用split拆分各项内容，存入一个对应的通讯录对象中，所有的通讯录对象保存在一个List中；
保存时，以覆盖的方式写入文件，以相同的格式写入即可。
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;
public class AddressList {
static Scanner scanner = new Scanner(System.in);
static ListEntity enlist = new ArrayListEntity();
public static void main(String[] args) {
int input;
AddressList addre = new AddressList();
System.out.println("===============欢迎使用**通讯录===============");
do{
System.out.println("1、插入联系人");
System.out.println("2、删除练习人");
System.out.println("3、修改联系人");
System.out.println("4、查询练习人");
System.out.println("5、查询全部联系人");
System.out.println("0、退出系统");
System.out.println("请选择：");
input = scanner.nextInt();
switch(input){
case 1:
Entity e = new Entity();
e.id = enlist.size();
System.out.println("请输入联系人姓名：");
e.name = scanner.next();
System.out.println("请输入联系方式：");
e.number = scanner.nextInt();
addre.add(e);
System.out.println("插入成功！");
break;
case 2:
System.out.println("请输入要删除联系人编号：");
int num = scanner.nextInt();
if(addre.delete(num))
System.out.println("删除成功！");
else
System.out.println("删除失败，请确认信息是否正确！");
break;
case 3:
System.out.println("请输入要修改人编号：");
int unum = scanner.nextInt();
addre.update(unum);
System.out.println("修改完成！");
break;
case 4:
System.out.println("请输入要查询人姓名：");
String name = scanner.next();
Entity ent = addre.select(name);
if(ent!=null){
System.out.println(name+"的联系方式为："+ent.number);
}else{
System.out.println("查无此人！");
}
break;
case 5:
for(Entity entit:enlist){
System.out.println(entit.name+"的联系方式为："+entit.number);
}
break;
}
}while(input!=0);
System.out.println("谢谢使用！");
}
/*
* 添加联系人
*/
public boolean add(Entity e){
enlist.add(e);
return true;
}
/*
* 删除联系人
*/
public boolean delete(int num){
if(numenlist.size())
return false;
else
enlist.remove(num);
return true;
}
/*
* 修改联系人
*/
public void update(int num){
if(numenlist.size())
System.out.println("查无此人！");
else{
Entity e = new Entity();
e.id = num;
System.out.println("请输入联系人姓名：");
e.name = scanner.next();
System.out.println("请输入联系方式：");
e.number = scanner.nextInt();
enlist.set(num, e);
}
}
/*
* 查询指定联系人电话
*/
public Entity select(String name){
Entity en = null;
for(Entity e : enlist){
if(e.name.equals(name))
en = e;
}
return en;
}
}
class Entity{
public int id;//编号
public String name;//姓名
public int number;//联系电话
}
