java實現通訊錄管理系統
阿新 • • 發佈:2020-07-26
本文例項為大家分享了java實現通訊錄管理系統的具體程式碼,供大家參考,具體內容如下
完成專案的流程:
1.根據需求,確定大體方向
2.功能模組分析
3.介面實現
4.功能模組設計
5.coding
6.程式碼測試
下面是原始碼:
import java.awt.Container; import java.awt.GridLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.io.BufferedReader; import java.io.FileNotFoundException; import java.io.FileReader; import java.io.FileWriter; import java.io.IOException; import java.util.ArrayList; import java.util.Scanner; import java.util.concurrent.SynchronousQueue; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.WindowConstants; import javax.swing.text.html.HTMLDocument.Iterator; class Infro{ public String id; public String name; public String sex; public String address; public String e_mail; public String phoneNumber; static int index = 0; static ArrayList<Infro> list = new ArrayList(); static int len = list.size(); //建構函式 public Infro(String id,String name,String sex,String address,String e_mail,String phoneNumber){ this.id = id; this.name = name; this.sex = sex; this.address = address; this.e_mail = e_mail; this.phoneNumber = phoneNumber; } public String toString(){ return "編號:"+id+" 姓名:"+name+" 性別:"+sex+" 通訊地址:"+address+" 郵箱地址:"+e_mail+" 電話:"+phoneNumber; } /* * 新增功能 * */ public static void addFunction(){//新增功能 Infro infro = new Infro("","",""); System.out.println("請輸入新增的資料:"); Scanner in = new Scanner(System.in); System.out.println("輸入編號:"); infro.id = in.next(); System.out.println("輸入姓名:"); infro.name = in.next(); System.out.println("輸入性別:"); infro.sex = in.next(); System.out.println("輸入通訊地址:"); infro.address = in.next(); System. out.println("輸入郵箱地址:"); infro.e_mail = in.next(); System.out.println("輸入電話:"); infro.phoneNumber = in.next(); list.add(index,infro); index++; if(list.isEmpty()){ System.out.println("資料新增失敗啦"); }else{ System.out.println("資料新增成功啦"); len++;//list集合長度加一 // System.out.println(list.get(0).toString()); } } // public static void deleteFunction(){//刪除功能 // System.out.println("輸入要刪除的聯絡人的編號"); // Scanner in_2 = new Scanner(System.in); // String d1 = in_2.nextLine(); // for(int a= 0; a<len;a++){ // if(d1.equals(list.get(a).id)){ // list.remove(list.get(a)); // len --; // } // } // } /* * 刪除功能 * */ public static void deleteFunction(){ System.out.println("輸入要刪除的聯絡人的編號"); Scanner in_2 = new Scanner(System.in); String d1 = in_2.nextLine(); java.util.Iterator<Infro> it = list.iterator(); while (it.hasNext()){ Infro infro = it.next(); if (infro.id.equals(d1)){ it.remove(); --index;//一定要加這個,否則當做了刪除操作再做新增操作的時候會出現異常(類似於指標,棧) System.out.println("刪除完畢"+"此時通訊錄記錄條數為:" + --len); } } } /* * 修改功能 * */ public static void reditFunction(){ System.out.println("輸入要修改的通訊錄的Id"); Scanner in_r = new Scanner(System.in); String r1 = in_r.nextLine(); for(int a = 0; a < len;a++){ if(r1.equals(list.get(a).id)){ System.out.println("輸入修改後的姓名:"); String name_1 = in_r.next(); list.get(a).name = name_1; System.out.println("輸入修改後的性別:"); String sex_1 = in_r.next(); list.get(a).sex = sex_1; System.out.println("輸入修改後的通訊地址:"); String address_1 = in_r.next(); list.get(a).address = address_1; System.out.println("輸入修改後的郵箱地址:"); String e_mail_1 = in_r.next(); list.get(a).e_mail = e_mail_1; System.out.println("輸入修改後的電話:"); String phoneNumber_1 = in_r.next(); list.get(a).phoneNumber = phoneNumber_1; System.out.println("資料修改完畢"); } } } /* * 查詢功能 * */ public static void searchFunction() throws Exception{//查詢功能 System.out.println("請輸入要查詢的姓名:"); Scanner in_1 = new Scanner(System.in); String s1=in_1.nextLine(); for(int a= 0; a<len;a++){//切記,,這裡不能用a<=list.seze(),否則會陣列越界異常 if(s1.equals(list.get(a).name)){ System.out.println(list.get(a).toString()); } } } /* * 顯示功能 * */ public static void showFunction(){ for(int i = 0 ;i<len;i++){ System.out.println(list.get(i).toString()); } } /* * 儲存功能 * */ public static void writeFunction() throws IOException{ FileWriter writer = new FileWriter("通訊錄管理.txt"); for(int i = 0 ;i<len;i++){ String []strwriter = new String[len]; strwriter[i]=list.get(i).toString(); writer.write(strwriter[i]); writer.write("\r\n"); System.out.println("成功寫入一行資料到 通訊錄管理.txt 中"); } writer.close();//關閉寫入流,釋放資源 } /* * 讀取功能 * */ public static void readFunction() throws IOException{ FileReader reader = new FileReader("通訊錄管理.txt"); BufferedReader br = new BufferedReader(reader); String str; while((str = br.readLine()) != null){//每次讀取一行文字,判斷是否到達檔案尾 System.out.println(str); } br.close(); } } public class Demo extends JFrame { /* * 介面設計 * */ public Demo(){ Container c = getContentPane(); //定義一個頂級容器c JPanel jp = new JPanel(); //新建JPanel面板--jp JButton button1 = new JButton("新建聯絡人"); JButton button2 = new JButton("刪除聯絡人"); JButton button3 = new JButton("編輯聯絡人"); JButton button4 = new JButton("查詢聯絡人"); JButton button5 = new JButton("顯示所有聯絡人"); JButton button6 = new JButton("儲存聯絡人到本地"); JButton button7 = new JButton("讀取本地聯絡人"); jp.setLayout(new GridLayout(2,4,5,5));//新建網格佈局管理器(行數,列數,元件間的水平垂直間距) jp.add(button1); jp.add(button2); jp.add(button3); jp.add(button4); jp.add(button5); jp.add(button6); jp.add(button7); c.add(jp);//將JPanel面板jp新增到頂級容器c中 setSize(600,500); setTitle("*通 訊 錄 管 理 系 統*"); setVisible(true); setResizable(false);//窗體大小由程式設計師決定,使用者不能自由改變大小 setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); /* *按鍵響應 * * */ button1.addActionListener(new ActionListener(){//新增功能實現 public void actionPerformed(ActionEvent arg0){ Infro.addFunction(); } }); button2.addActionListener(new ActionListener(){//刪除功能實現 public void actionPerformed(ActionEvent arg0){ Infro.deleteFunction(); } }); button3.addActionListener(new ActionListener(){//修改功能實現 public void actionPerformed(ActionEvent arg0){ Infro.reditFunction(); } }); button4.addActionListener(new ActionListener(){//查詢功能實現 public void actionPerformed(ActionEvent arg0){ try { Infro.searchFunction(); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } } }); button5.addActionListener(new ActionListener(){//顯示功能實現 public void actionPerformed(ActionEvent arg0){ Infro.showFunction(); } }); button6.addActionListener(new ActionListener(){//儲存功能實現 public void actionPerformed(ActionEvent arg0){ try { Infro.writeFunction(); } catch (IOException e) { e.printStackTrace(); } } }); button7.addActionListener(new ActionListener(){//讀取功能實現 public void actionPerformed(ActionEvent arg0){ try { Infro.readFunction(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } }); } public static void main(String[] args) { // TODO Auto-generated method stub new Demo(); Infro a = new Infro("",""); } }
ps:在用List集合的時候,遇到了一些小問題,這些小問題我在程式碼裡有註釋,希望以後不要再犯這種問題。
以上就是本文的全部內容,希望對大家的學習有所幫助,也希望大家多多支援我們。