java实现固定电话号码_Java实现的简单电话号码储存

秒速五厘米 2022-11-09 12:31 220阅读 0赞

package com.sinosuperman.example;

import java.io.BufferedReader;

import java.io.File;

import java.io.FileReader;

import java.io.IOException;

import java.util.StringTokenizer;

import java.util.TreeMap;

import javax.swing.JOptionPane;

public class PhoneNoteBook \{

private final File phoneNoteBookFile;

private TreeMap phoneNoteBookMap;

public PhoneNoteBook(String fileName) throws IOException \{

phoneNoteBookMap = new TreeMap();

phoneNoteBookFile = new File(fileName);

loadAllRecords();

private void loadAllRecords() throws IOException \{

BufferedReader reader = new BufferedReader(new FileReader(phoneNoteBookFile));

String line = reader.readLine();

while (line != null) \{

StringTokenizer str = new StringTokenizer(line, "\\t");

String name = str.nextToken();

String phone = str.nextToken();

phoneNoteBookMap.put(name, phone);

line = reader.readLine();

reader.close();

private void addRecord() \{

String name = JOptionPane.showInputDialog("Please enter the name:\\n");

String phone = JOptionPane.showInputDialog("Please enter the phone:\\n");

if (JOptionPane.showConfirmDialog(null, "Are you sure?") == JOptionPane.YES\_OPTION) \{

phoneNoteBookMap.put(name, phone);

\} else \{

JOptionPane.showMessageDialog(null, "Operation has been canceled");

private void updateRecord() \{

String name = JOptionPane.showInputDialog("Please enter the name:\\n");

String phone = JOptionPane.showInputDialog("Please enter his/her new phone name:\\n");

if (!phoneNoteBookMap.containsKey(name)) \{

if (JOptionPane.showConfirmDialog(null, "This name does not exist. Do you want to create a new one?") == JOptionPane.YES\_OPTION) \{

phoneNoteBookMap.put(name, phone);

\} else \{

JOptionPane.showMessageDialog(null, "Operation has been canceled");

\} if (JOptionPane.showConfirmDialog(null, "Are you sure to modify his/her phone number?") == JOptionPane.YES\_OPTION) \{

phoneNoteBookMap.put(name, phone);

\} else \{

JOptionPane.showMessageDialog(null, "Operation has been canceled");

private void searchRecord() \{

String name = JOptionPane.showInputDialog("Please the name for searching");

if (phoneNoteBookMap.containsKey(name)) \{

JOptionPane.showMessageDialog(null, phoneNoteBookMap.get(name));

\} else \{

JOptionPane.showMessageDialog(null, "The name you are searching does not exists.");

private void removeRecord() \{

String name = JOptionPane.showInputDialog("Please enter the name:\\n");

if (!phoneNoteBookMap.containsKey(name)) \{

JOptionPane.showConfirmDialog(null, "This name does not exist. So you don't need to remove it.");

\} else if (JOptionPane.showConfirmDialog(null, "Are you sure to remove his/her record?") == JOptionPane.YES\_OPTION) \{

phoneNoteBookMap.remove(name);

\} else \{

JOptionPane.showMessageDialog(null, "Operation has been canceled");

public void display() \{

String message = "Please select an operation:\\n" +

"Enter \\"1\\" to add a new record;\\n" +

"Enter \\"2\\" to update a existing record;\\n" +

"Enter \\"3\\" to find a phone number;\\n" +

"Enter \\"4\\" to remove a existing record.\\n";

int choice = 0;

try \{

choice = Integer.parseInt(JOptionPane.showInputDialog(message));

switch (choice) \{

case 1:

addRecord();

break;

case 2:

updateRecord();

break;

case 3:

searchRecord();

break;

case 4:

removeRecord();

break;

default:

\} catch (NumberFormatException e) \{

if (JOptionPane.showConfirmDialog(null, "Would you want to continue?") != JOptionPane.YES\_OPTION) \{

JOptionPane.showMessageDialog(null, "Thank you.");

\} else \{

display();

java实现固定电话号码_Java实现的简单电话号码储存

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