本文實例為大家分享了java實現通訊錄管理系統的具體代碼,供大家參考,具體內容如下
完成項目的流程:
1.根據需求,確定大體方向
2.功能模塊分析
3.界面實現
4.功能模塊設計
5.coding
6.代碼測試
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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(); //構造函數 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; } /* * 添加功能 * */ public static void addFunction(){//添加功能 Infro infro = new Infro("","","","","",""); System.out.println("請輸入添加的數據:"); 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("數據添加失敗啦"); }else{ System.out.println("數據添加成功啦"); 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("輸入要刪除的聯系人的編號"); // 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("輸入要刪除的聯系人的編號"); 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添加操作的時候會出現異常(類似于指針,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("輸入修改后的姓名:"); String name_1 = in_r.next(); list.get(a).name = name_1; System.out.println("輸入修改后的性別:"); String sex_1 = in_r.next(); list.get(a).sex = sex_1; System.out.println("輸入修改后的通訊地址:"); String address_1 = in_r.next(); list.get(a).address = address_1; System.out.println("輸入修改后的郵箱地址:"); String e_mail_1 = in_r.next(); list.get(a).e_mail = e_mail_1; System.out.println("輸入修改后的電話:"); String phoneNumber_1 = in_r.next(); list.get(a).phoneNumber = phoneNumber_1; System.out.println("數據修改完畢"); } } } /* * 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,,這里不能用a<=list.seze(),否則會數組越界異常 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()); } } /* * 保存功能 * */ 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("成功寫入一行數據到 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){//每次讀取一行文本,判斷是否到達文件尾 System.out.println(str); } br.close(); } } public class Demo extends JFrame { /* * 界面設計 * */ 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("新建聯系人"); JButton button2 = new JButton("刪除聯系人"); JButton button3 = new JButton("編輯聯系人"); JButton button4 = new JButton("查找聯系人"); JButton button5 = new JButton("顯示所有聯系人"); JButton button6 = new JButton("保存聯系人到本地"); JButton button7 = new JButton("讀取本地聯系人"); jp.setLayout(new GridLayout(2,4,5,5));//新建網格布局管理器(行數,列數,組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添加到頂級容器c中 setSize(600,500); setTitle("*通 訊 錄 管 理 系 統*"); setVisible(true); setResizable(false);//窗體大小由程序員決定,用戶不能自由改變大小 setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); /* *按鍵響應 * * */ button1.addActionListener( new ActionListener(){ //添加功能實現 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(){ //保存功能實現 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,這些小問題我在代碼里有注釋,希望以后不要再犯這種問題。
以上就是本文的全部內容,希望對大家的學習有所幫助,也希望大家多多支持服務器之家。
原文鏈接:https://blog.csdn.net/wu2304211/article/details/51768436