java 備忘錄編寫源代碼及運行界面截圖參考模板

1、/Memorial.javaimport java.awt.*;import java.awt.event.*;import java.awt.image.BufferedImage;import java.io.*;import java.util.*;import javax.imageio.ImageIO;import javax.swing.*;public class Memorial extends JFrame implements ActionListener/* * param args */private JLabel title,picture,mark,jl1,jl2,

2、jl3,jl4;private JTextField jt1,jt2,jt3;private JButton Ok ,Cancle;private static String name1 =null;private static String pass1 = null;/ 構(gòu)造函數(shù)public Memorial()title = new JLabel("我的備忘錄");picture = new JLabel(new ImageIcon("photos/3.jpg");/背景標簽/*mark = new JLabel(new ImageIcon(&quo

3、t;3.jpg"); */jl1 =new JLabel( "登錄名：");jl2 =new JLabel( "登錄密碼：");jl3 =new JLabel( );jl4 = new JLabel("看不清");jt1 = new JTextField();jt2 = new JTextField();jt3 = new JTextField();Ok = new JButton ("登錄");Cancle = new JButton("取消");/頁面布局 public void

4、launchFrame()JPanel p = (JPanel) getContentPane();jl3.setText( getcode() );jl3.setForeground(Color.cyan); /設置驗證碼的顏色jl3.setBorder(BorderFactory.createRaisedBevelBorder();/使驗證碼凸出顯示jl4.setForeground(Color.magenta);/設置“看不清”標簽的前景色為洋紅色jl4.addMouseListener(new addEvent(); /為“看不清”標簽添加鼠標監(jiān)聽器Ok.addActionListen

5、er(this); /為“登錄”按鈕添加監(jiān)聽器Cancle.addActionListener(this); /為“取消”按鈕添加監(jiān)聽器1 / 32Ok.setBorder(BorderFactory.createRaisedBevelBorder(); /使按鈕凸出顯示Cancle.setBorder(BorderFactory.createRaisedBevelBorder();/*設置背景圖片p.setLayout(null);/使用setBounds(),必須使布局為nullpicture.setBounds(0,0,500,330);p.add(picture);p.setOpaqu

6、e(false);/使內(nèi)容窗格透明 /把背景圖片添加到分層窗格的最底層作為背景getLayeredPane().add(picture,new Integer(Integer.MIN_VALUE);/*設置標題title.setForeground(Color.red);title.setFont(new Font("華文行楷",Font.BOLD,20);title.setBounds(190,20,120,40); p.add(title); /*設置圖標 BufferedImage icon = null; try icon = ImageIO.read( new F

7、ile( "photos/9.jpg" ) ); this.setIconImage(icon); catch( Exception e ) jl1.setBounds(140,80,100,25);p.add(jl1);jt1.setBounds(240,80,100,25);p.add(jt1);jl2.setBounds(140,120,100,25);p.add(jl2);jt2.setBounds(240,120,100,25);p.add(jt2);jt3.setBounds(140,160,70,25);p.add(jt3);jl3.setBounds(250

8、,160,40,25);p.add(jl3);jl4.setBounds(300, 160, 50, 25);p.add(jl4);Ok.setBounds(150,220,60,30);p.add(Ok);Cancle.setBounds(260,220,60,30);p.add(Cancle);setTitle("登錄界面");setBounds(300,200,500,330);setResizable(false);/窗口不能被拖動setVisible(true);setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); /獲取

9、驗證碼public String getcode()Random rd = new Random();String str =""int a = new int 4;for(int i = 0; i < 4; i+)ai=rd.nextInt(200);if(ai>=48&&ai<=57)|(ai>=65&&ai<=90)|(ai>=97&&ai<=122)str = str + (char)ai;else /獲取的字符不在范圍內(nèi)，獲取未成功；i-; / i-，保證最終獲取到四位的驗證

10、碼 return str; /從文件中讀取正確的用戶名public static String seekname() throws IOExceptionInputStream fin1 = new FileInputStream ("message用戶名.txt");byte c = new byte10;int len=0;while (len = fin1.read(c)!=-1)name1 = new String (c,0,len);return name1; /從文件中讀取正確的登錄密碼public static String seekpass() throws

11、 IOExceptionInputStream fin2 = new FileInputStream ("message登錄密碼.txt");byte c = new byte10;int len=0;while (len = fin2.read(c)!=-1)pass1 = new String (c,0,len); return pass1;/判斷文本框是否為空public boolean isEmpty( JTextField jt )if( jt.getText().equals( "" )return true;return false;/判斷

12、操作是否非法，主要是針對各文本框而言的；若文本框為空，提示填寫信息public boolean isLegal()if( isEmpty( jt1 ) ) JOptionPane.showMessageDialog(null, "用戶名不能為空！" );return false;else if( isEmpty(jt2 ) )JOptionPane.showMessageDialog(null, "密碼不能為空！" );return false;else if( isEmpty( jt3) )JOptionPane.showMessageDialog(n

13、ull, "請輸入驗證碼！" );return false;elsereturn true; /按鈕事件處理Overridepublic void actionPerformed(ActionEvent e) / TODO Auto-generated method stubObject source = e.getSource();String name2 = jt1.getText();String pass2 = jt2.getText();String code2 = jt3.getText();String code1 = jl3.getText();if(sou

14、rce = Ok)if(isLegal() /調(diào)用isLegal()函數(shù)，保證文本框不為空try /調(diào)用函數(shù)seekname(),seekpass(),文件可能不存在 if(name2.equals(seekname() if(pass2.equals(seekpass()if(code2.equalsIgnoreCase( code1 ) /在用戶登錄信息完全正確的條件下，進入備忘錄（含日歷）JOptionPane.showMessageDialog(null, "登錄成功！");Calendar calendar=Calendar.getInstance(); int

15、y=calendar.get(Calendar.YEAR); int m=calendar.get(Calendar.MONTH)+1; int d=calendar.get(Calendar.DAY_OF_MONTH); new CalendarPad(y,m,d); this.dispose();/關(guān)閉登錄界面elseJOptionPane.showMessageDialog(this,"驗證碼錯誤，請重新輸入！","錯誤提示",JOptionPane.ERROR_MESSAGE);jl3.setText( getcode() );elseJOpti

16、onPane.showMessageDialog(this,"密碼錯誤，請重新輸入！","錯誤提示",JOptionPane.ERROR_MESSAGE);elseJOptionPane.showMessageDialog(this,"您輸入的用戶名不存在，請重新輸入！","錯誤提示",JOptionPane.ERROR_MESSAGE); catch (HeadlessException | IOException e1) / TODO Auto-generated catch blocke1.printStac

17、kTrace();if(source = Cancle)/詢問對話框int choose =JOptionPane.showConfirmDialog(null, "確定取消登錄？","詢問",JOptionPane.YES_NO_OPTION); if( choose = JOptionPane.YES_OPTION ) System.exit(0); /退出登錄系統(tǒng) else if( choose = JOptionPane.NO_OPTION ) class addEvent extends MouseAdapterOverridepublic v

18、oid mouseClicked(MouseEvent e) / TODO Auto-generated method stub jl3.setText( getcode() );public static void main(String args)/ TODO Auto-generated method stub new Memorial().launchFrame();/year.javaimport javax.swing.*;import java.awt.*;import java.awt.event.*;public class Year extends JPanel/Actio

19、nListener接口 private int year; private JTextField showYear=null; private JButton nextYear,lastYear; private CalendarPad cal; public Year(CalendarPad c) showYear=new JTextField(4); this.cal=c; year=cal.getYear(); nextYear=new JButton("下年"); lastYear=new JButton("上年"); launch(); /布局

20、函數(shù) public void launch() showYear.setForeground(Color.blue); showYear.setFont(new Font("宋體",Font.BOLD,16); setLayout(new GridLayout(1,3,5,5); add(lastYear); add(showYear); add(nextYear); showYear.addActionListener(new addEvent(); lastYear.addActionListener(new addEvent(); nextYear.addAction

21、Listener(new addEvent(); lastYear.setBorder(BorderFactory.createRaisedBevelBorder();/使按鈕凸出 nextYear.setBorder(BorderFactory.createRaisedBevelBorder(); /年 public void setYear(int year) this.year=year; showYear.setText(""+year); public int getYear() return year; /事件類 class addEvent implement

22、s ActionListener Override public void actionPerformed(ActionEvent e) if(e.getSource()=lastYear) /對年份進行判斷操作 year=year-1; showYear.setText(""+year); cal.setYear(year); cal.setCal(year,cal.getMonth(); else if(e.getSource()=nextYear) year=year+1; showYear.setText(""+year); cal.setYea

23、r(year); cal.setCal(year,cal.getMonth(); else if(e.getSource() = showYear) try year=Integer.parseInt(showYear.getText(); /年份控制在一定范圍 if(year>=-10000&&year<=10000) showYear.setText(""+year); cal.setYear(year); cal.setCal(year,cal.getMonth(); else JOptionPane.showMessageDialog(n

24、ull,"輸入的年份有誤，請重新輸入！","錯誤提示",JOptionPane.ERROR_MESSAGE); showYear.setText(""); catch(NumberFormatException ee) JOptionPane.showMessageDialog(null,"請輸入正確的年份格式！","錯誤提示",JOptionPane.ERROR_MESSAGE); showYear.setText(""); /Month.java/對月份的選擇import

25、 javax.swing.*;import java.awt.*;import java.awt.event.*;public class Month extends JPanel /ActionListener接口 private int month; private JTextField showMonth=null; private JButton lastMonth,nextMonth; private CalendarPad cal; public Month( CalendarPad c ) this.cal = c; showMonth = new JTextField(); m

26、onth = c.getMonth(); nextMonth = new JButton("下月"); lastMonth = new JButton("上月"); launch(); /頁面布局 public void launch() showMonth.setEditable(false); /設置月份不可被編輯 showMonth.setForeground(Color.blue); showMonth.setFont(new Font("宋體",Font.BOLD,16); setLayout(new GridLayout(

27、1,3,5,5); add(lastMonth); add(showMonth); add(nextMonth); lastMonth.addActionListener(new addEvent(); nextMonth.addActionListener(new addEvent(); lastMonth.setBorder(BorderFactory.createRaisedBevelBorder(); nextMonth.setBorder(BorderFactory.createRaisedBevelBorder(); showMonth.setText(""+m

28、onth); public void setMonth(int month) if(month<=12&&month>=1) this.month=month; else this.month=1; showMonth.setText(""+month); public int getMonth() return month; / 事件處理 class addEvent implements ActionListener Override public void actionPerformed(ActionEvent e) if(e.getSou

29、rce()=lastMonth) if(month>=2) month=month-1; cal.setMonth(month); cal.setCal(cal.getYear(),month); else if(month=1) month=12; cal.setMonth(month); cal.setCal(cal.getYear(),month); showMonth.setText(""+month); else if(e.getSource()=nextMonth) if(month<12) month=month+1; cal.setMonth(m

30、onth); cal.setCal(cal.getYear(),month); else if(month=12) month=1; cal.setMonth(month); cal.setCal(cal.getYear(),month); showMonth.setText(""+month); / Clock.java/提取當前的年月日時分秒，時鐘import java.awt.*;import java.text.SimpleDateFormat;/SimpleDateFormat是一個以與語言環(huán)境相關(guān)的方式來格式化和分析日期的具體類import java.util.

31、Calendar;import javax.swing.JPanel; /* 1.創(chuàng)建線程一種方法是將類聲明為 Thread 的子類。該子類應重寫 Thread 類的 run 方法。 * 接下來可以分配并啟動該子類的實例。 * 另一種方法是聲明實現(xiàn) Runnable 接口的類,該類然后實現(xiàn) run 方法。 * 然后可以分配該類的實例，在創(chuàng)建 Thread 時作為一個參數(shù)來傳遞并啟動。 * 2.Canvas 組件為Component的一個子類，表示屏幕上一個空白矩形區(qū)域， * 應用程序可以在該區(qū)域內(nèi)繪圖，或者可以從該區(qū)域捕獲用戶的輸入事件。 * 應用程序必須為 Canvas 類創(chuàng)建子類，以獲得有

32、用的功能（如創(chuàng)建自定義組件）。 * 必須重寫 paint 方法，以便在 canvas 上執(zhí)行自定義圖形。 */class Clock extends Canvas implements Runnable CalendarPad cp; Thread t; /Multi-Thread（斜體）線程 是程序中的執(zhí)行線程。Java 虛擬機允許應用程序并發(fā)地運行多個執(zhí)行線程。 String time; public Clock(CalendarPad cp) this.cp=cp; setSize(280,40); setBackground( Color.pink ); t = new Thread(

33、 this ); /實例化線程 t.start(); /調(diào)用線程 Override public void run() while(true) try Thread.sleep(1000); /休眠1秒鐘 catch(InterruptedException e) System.out.println("異常"); this.repaint(1000); /重畫屏幕 /* Graphics 類是所有圖形上下文的抽象基類， * 允許應用程序可以在組件（已經(jīng)在各種設備上實現(xiàn)）， * 以及閉屏圖像上，進行繪制。 */ /對paint函數(shù)進行重寫,在 canvas上執(zhí)行自定義圖形

34、public void paint( Graphics g ) /super.paintComponent(g); SimpleDateFormat sdf=new SimpleDateFormat(" yyyy'年'MM'月'dd'日'HH:mm:ss");/格式化時間顯示類型 Calendar now=Calendar.getInstance(); / time=sdf.format(now.getTime(); /format()格式化時間對象，得到當前日期和時間 g.setFont(new Font("華文行

35、楷",Font.BOLD,18); g.setColor(Color.red); g.drawString(time,50,25); /使用此圖形上下文的當前字體和顏色，在指定的坐標位置，繪制由指定 string 給定的文本 /CalendarPad.java/Calendar日歷記事本import java.util.Calendar;import javax.imageio.ImageIO;import javax.swing.*;import java.awt.*;import java.awt.event.*;import java.awt.image.BufferedIma

36、ge;import java.io.File;public class CalendarPad extends JFrame int year,month,day; private JTextField showDay; private JLabel title; Calendar cal =Calendar.getInstance();/ 實例化Calendar int week; Note note=null; Month ChangeMonth; Year ChangeYear; String w="星期日","星期一","星期二&quo

37、t;,"星期三","星期四","星期五","星期六" private JPanel leftPanel,rightPanel; /構(gòu)造函數(shù) public CalendarPad( int year,int month,int day ) leftPanel=new JPanel(); /左側(cè)是日歷 rightPanel=new JPanel(); /右側(cè)顯示相應的記事 this.year=year; this.month=month; this.day=day; ChangeYear=new Year(this);

38、 ChangeYear.setYear(year); ChangeMonth=new Month(this); ChangeMonth.setMonth(month); launch(); /頁面布局 public void launch() JPanel leftCenter=new JPanel(); /左側(cè)放置日歷 JPanel leftNorth=new JPanel(); /右側(cè)放置事件 /*設置圖標*/ BufferedImage icon = null; try icon = ImageIO.read( new File( "photos/7.jpg" ) )

39、; this.setIconImage(icon); catch( Exception e ) /*左面板中間部分的面板布置*/ leftCenter.setLayout(new GridLayout(7,7); title=new JLabel7; showDay=new JTextField42; /day用不可被編輯的文本框顯示 for(int j=0;j<7;j+) titlej=new JLabel(); titlej.setText(wj); /“星期日” 到 “星期六” titlej.setBorder(BorderFactory.createRaisedBevelBord

40、er(); /創(chuàng)建一個具有凸出斜面邊緣的邊框，將組件當前背景色的較亮的色度用于突出顯示，較暗的色度用于陰影 leftCenter.add(titlej); title0.setForeground(Color.orange);/設置 “星期日” 字體顏色，設置前景色 title6.setForeground(Color.green);/設置 “星期六 ”字體顏色 for(int i=0;i<42;i+) showDayi=new JTextField(); showDayi.addMouseListener(new addEvent(); showDayi.setEditable(fal

41、se); /日期不可被編輯 leftCenter.add(showDayi); /*左面板北面部分的面板,由與年份和月份有關(guān)的組件組成*/ JPanel p = new JPanel(); p.setLayout(new GridLayout(1,2); p.add(ChangeYear); p.add(ChangeMonth); leftNorth.add(p); /*左側(cè)面板整體布置*/ leftPanel.setLayout( new BorderLayout() ); leftPanel.add( leftNorth,"North" ); leftPanel.add

42、( leftCenter,"Center" ); leftPanel.add( new Clock(this),"South"); /!調(diào)用Clock類實例,顯示當前時間 leftPanel.validate(); /*右側(cè)面板整體布局*/ rightPanel.add( new Label( " 文本框輸入年份，按Enter鍵確定(負數(shù)表示公元前)" ),"North") ; note=new Note(this); /當前日歷 rightPanel.add(note,"Center"); /

43、把note放在右側(cè)面板中間部分 setCal(year,month); /*備忘錄界面總布局*/ Container c = getContentPane();/獲得大內(nèi)容嵌板 JSplitPane split=new JSplitPane(JSplitPane.HORIZONTAL_SPLIT,leftPanel,rightPanel); c.add(split); /*JSplitPane 用于分隔兩個（只能兩個）Component, 使用 JSplitPane.HORIZONTAL_SPLIT 可讓分隔窗格中的兩個 Component 從左到右排列*/ /*Container c = g

44、etContentPane(); c.setLayout(new GridLayout(1,2); c.add(leftPanel); c.add(rightPanel); */ /此種添加方式，兩個Component之間沒有分隔 ，比較突兀 pack(); setTitle("備忘錄"); setVisible(true); setResizable(false);/窗口不能被拖動 setBounds(350,100,620,350); validate(); /鼠標事件處理，單擊某日期，獲取該日的備忘錄信息 class addEvent extends MouseAda

45、pter Override public void mousePressed( MouseEvent e) JTextField source=(JTextField)e.getSource(); try day = Integer.parseInt(source.getText(); note.setDay(day); note.setTimeLabel(year,month,day); /在右側(cè)面板上顯示點擊的時間 note.setText(null); note.getLog(year,month,day); /獲取該天的備忘錄信息 catch(Exception ee) /設置每月的天數(shù) public void setCal(int year,int month) cal.set(year,month-1,1); /調(diào)用Calendar類的set()函數(shù)，設置年、月 week=cal.get(Calendar.DAY_OF_WE