ava备忘录编写源代码及运行界面截图

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

2、3,jl4;private JTextField jt1,jt2,jt3;private JButton Ok ,Cancle;private static String name1 =null;private static String pass1 = null;/构造函数public Memorial()title = new JLabel(我的备忘录)；picture = new JLabel(new ImageIcon(photos/ 3.jpg); 背景标签/*mark = new JLabel(new ImageIcon(3.jpg); */jl1 =new JLabel(登录名：

3、);jl2 =new JLabel(登录密码：);jl3 =new JLabel();jl4 = new JLabel(看不清);jt1 = new JTextField();jt2 = new JTextField();jt3 = new JTextField();Ok = new JButton (登录);Cancle = new JButton(取消);页面布局public void launchFrame()JPanel p = (JPanel) getContentPane();jl3.setText( getcode();jl3.setForeground(Color.cyan);

4、 / 设置验证码的颜色jl3.setBorder(BorderFactory.createRaisedBevelBorder();/ 使验证码凸出显示jl4.setForeground(Color.magenta);/设置看不清标签的前景色为洋红色jl4.addMouseListener(new addEvent(); 为看不清标签添加鼠标监听器Ok.addActionListener(this); / 为登录按钮添加监听器Cancle.addActionListener(this); / 为取消按钮添加监听器Ok.setBorder(BorderFactory.createRaisedBev

5、elBorder(); 使按钮凸出显示 Cancle.setBorder(BorderFactory.createRaisedBevelBorder();/*设置背景图片p.setLayout(null);/ 使用 setBounds(),必须使布局为 null picture.setBounds(0,0,500,330);p.add(picture);p.setOpaque(false);/使内容窗格透明/把背景图片添加到分层窗格的最底层作为背景getLayeredPane().add(picture,new Integer(Integer.MIN_VALUE);/*设置标题title.se

6、tForeground(Color.red);title.setFont(new Font(华文行楷”,Font.BOLD,20);title.setBounds(190,20,120,40);p.add(title);/*设置图标Bufferedlmage icon = null;tryicon = ImageIO.read( new File( photos/9.jpg);this.setIconImage(icon);catch( Exception e )jl1.setBounds(140,80,100,25);p.add(jl1);jt1.setBounds(240,80,100,2

7、5);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(250,160,40,25);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(Cancl

8、e);setTitle(登录界面)；setBounds(300,200,500,330);setResizable(false);窗 口不能被拖动setVisible(true);setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);/获取验证码public String getcode()Random rd = new Random();String str =;int a口 = new int 4;for(int i = 0; i =48&ai=65&ai=97&ai=-10000&year=10000)showYear.setText(+year)

9、;cal.setYear(year);cal.setCal(year,cal.getMonth(); elseJOptionPane.showMessageDialog(null,输入的年份有误，请重 新输入！”,错误提示,JOptionPane.ERROR_MESSAGE);showYear.setText(); catch(NumberFormatException ee) JOptionPane.showMessageDialog(null,请输入正确的年份格式! ,错误提示,JOptionPane.ERROR_MESSAGE);showYear.setText();/Month.jav

10、a/对月份的选择 import 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 JTextF

11、ield();month = c.getMonth();nextMonth = new JButton(下月);lastMonth = new JButton(上月力 launch();/页面布局public void launch()showMonth.setEditable(false); 设置月份不可被编辑 showMonth.setForeground(Color.blue);showMonth.setFont(new Font(宋体,Font.BOLD,16);setLayout(new GridLayout(1,3,5,5);add(lastMonth);add(showMonth

12、);add(nextMonth);lastMonth.addActionListener(new addEvent();nextMonth.addActionListener(new addEvent();lastMonth.setBorder(BorderFactory.createRaisedBevelBorder(); nextMonth.setBorder(BorderFactory.createRaisedBevelBorder(); showMonth.setText(+month);public void setMonth(int month)if(month=1)this.mo

13、nth=month;elsethis.month=1;showMonth.setText(+month);public int getMonth()return month;/事件处理class addEvent implements ActionListenerOverridepublic void actionPerformed(ActionEvent e)if(e.getSource()=lastMonth)if(month=2)month=month-1;cal.setMonth(month);cal.setCal(cal.getYear(),month);else if(month=

14、1)month=12; cal.setMonth(month);cal.setCal(cal.getYear(),month); showMonth.setText(+month);else if(e.getSource(尸nextMonth)if(month12) month=month+1;cal.setMonth(month);cal.setCal(cal.getYear(),month);else if(month=12) month=1;cal.setMonth(month);cal.setCal(cal.getYear(),month);showMonth.setText(+mon

15、th);/ Clock.java提取当前的年月日时分秒，时钟import java.awt.*;import java.text.SimpleDateFormat;/SimpleDateFormat 是一个以与语言环境相关的方式来格 式化和分析日期的具体类import java.util.Calendar;import javax.swing.JPanel;/* 1.创建线程一种方法是将类声明为Thread的子类。该子类应重写 Thread类的run方法。接下来可以分配并启动该子类的实例。另一种方法是声明实现Runnable接口的类，该类然后实现run方法。然后可以分配该类的实例，在创建 Th

16、read时作为一个参数来传递并启动。2.Canvas组件为Component的一个子类，表示屏幕上一个空白矩形区域，应用程序可以在该区域内绘图，或者可以从该区域捕获用户的输入事件。应用程序必须为Canvas类创建子类，以获得有用的功能(如创建自定义组件)。必须重写paint方法，以便在 canvas上执行自定义图形。*/class Clock extends Canvas implements Runnable CalendarPad cp;Thread t;/Multi-Thread (斜体)线程 是程序中的执行线程。Java虚拟机允许应用程序并发地运行多个执行线程。String time;

17、public Clock(CalendarPad cp) this.cp=cp;setSize(280,40);setBackground( Color.pink );t = new Thread( this );/ 实例化线程t.start();/调用线程Override public void run() while(true) tryThread.sleep(1000);/ 休眠 1 秒钟 catch(InterruptedException e) System.out.println(异常)； this.repaint(1000);/ 重画屏幕 /* Graphics类是所有图形上下文

18、的抽象基类， *允许应用程序可以在组件(已经在各种设备上实现)，*以及闭屏图像上，进行绘制。 */对paint函数进行重写，在canvas上执行自定义图形public void paint( Graphics g )/super.paintComponent(g);SimpleDateFormat sdf=new SimpleDateFormat( yyyy年MM月dd日 HH:mm:ss);格式化时间显示类型 Calendar now=Calendar.getInstance(); / time=sdf.format(now.getTime();/format()格式化时间对象，得到当前日期

19、和时间 g.setFont(new Font(华文行楷”,Font.BOLD,18); g.setColor(Color.red); g.drawString(time,50,25);使用此图形上下文的当前字体和颜色，在指定的坐标位置，绘制由指定 string给定的文本 CalendarPad.java/Calendar日历记事本import java.util.Calendar;import javax.imageio.ImagelO;import javax.swing.*;import java.awt.*;import java.awt.event.*;import java.awt.

20、image.Bufferedlmage;import java.io.File;public class CalendarPad extends JFrameint year,month,day;private JTextField showDay;private JLabel title口；Calendar cal =Calendar.getInstance();/ 实例化 Calendar int week;Note note=null;Month ChangeMonth;Year ChangeYear;String w=星期日,星期一,星期二,星期三,星期四,星期五,星期六; priva

21、te JPanel leftPanel,rightPanel;/构造函数public CalendarPad( int year,int month,int day )leftPanel=new JPanel(); / 左侧是日历rightPanel=new JPanel(); 右侧显示相应的记事 this.year=year;this.month=month;this.day=day;ChangeYear=new Year(this);ChangeYear.setYear(year);ChangeMonth=new Month(this);ChangeMonth.setMonth(month

22、); launch();/页面布局public void launch()JPanel leftCenter=new JPanel(); 左侧放置日历JPanel leftNorth=new JPanel();/ 右侧放置事件,*设置图标*/Bufferedlmage icon = null;tryicon = ImageIO.read( new File( photos/7.jpg);this.setlconlmage(icon);catch( Exception e )/*左面板中间部分的面板布置*/leftCenter.setLayout(new GridLayout(7,7);titl

23、e=new JLabel7;showDay=new JTextField42; /day用不可被编辑的文本框显示for(int j=0;j7;j+)titlej=new JLabel();titlej.setText(wj);/“星期日”到“星期六”titlej.setBorder(BorderFactory.createRaisedBevelBorder();/创建一个具有凸出斜面边缘的边框，将组件当前背景色的较亮的色度用于突出显示，较暗的色度用于阴影leftCenter.add(titlej);title0.setForeground(Color.orange);/设置 “星期日字体颜色，

24、设置前景色title6.setForeground(Color.green);/ 设置星期六字体颜色for(int i=0;i42;i+)showDayi=new JTextField();showDayi.addMouseListener(new addEvent();showDayi.setEditable(false); / 日期不可被编辑leftCenter.add(showDayi);/*左面板北面部分的面板，由与年份和月份有关的组件组成*/JPanel p = new JPanel();p.setLayout(new GridLayout(1,2);p.add(ChangeYear

25、);p.add(ChangeMonth);leftNorth.add(p);/*左侧面板整体布置*/leftPanel.setLayout( new BorderLayout();leftPanel.add( leftNorth,North);leftPanel.add( leftCenter,Center);leftPanel.add( new Clock(this),South); /!调用 Clock 类实例，显示当前时 间leftPanel.validate();/*右侧面板整体布局*/rightPanel.add( new Label(文本框输入年份，按 Enter键确定(负数表示公

26、元 前),North);note=new Note(this);当前日历rightPanel.add(note,Center); 把 note 放在右侧面板中间部分setCal(year,month);/*备忘录界面总布局*/Container c = getContentPane();/ 获得大内容嵌板JSplitPane split=new JSplitPane(JSplitPane.HORIZONTAL_SPLIT,leftPanel,rightPanel); c.add(split);/*JSplitPane用于分隔两个(只能两个)Component,使用 JSplitPane.HOR

27、IZONTAL_SPLITI 让分隔窗格中的两个Component从左到右排列*/Container c = getContentPane();c.setLayout(new GridLayout(1,2);c.add(leftPanel);c.add(rightPanel); */此种添加方式，两个 Component之间没有分隔 ，比较突pack()；setTitle(备忘录);setVisible(true);setResizable(false);窗 口不能被拖动 setBounds(350,100,620,350);validate。；鼠标事件处理，单击某日期，获取该日的备忘录信息c

28、lass addEvent extends MouseAdapterOverridepublic void mousePressed( MouseEvent e)JTextField source=(JTextField)e.getSource(); tryday = Integer.parseInt(source.getText();note.setDay(day);note.setTimeLabel(year,month,day); /在右侧面板上显示点击的时间 note.setText(null);note.getLog(year,month,day);/获取该天的备忘录信息catch(

29、Exception ee)/设置每月的天数public void setCal(int year,int month)cal.set(year,month-1,1); 调用 Calendar 类的 set()函数，设置年、月week=cal.get(Calendar.DAY_OF_WEEK)-1; /倜用 get()函数读取if(month=1|month=2|month=3|month=5|month=7 |month=8|month=10|month=12) SearchNum(week,31);else if(month=4|month=6|month=9|month=11)Search

30、Num(week,30);else if(month=2) if(year%4=0&year%100!=0)|(year%400=0)SearchNum(week,29); / 闰年else SearchNum(week,28); / 平年/查找日期public void SearchNum(int w_num, int month_num)for( int i = w_num, n = 1; iw_num + month_num; i + )showDayi.setText(+n);if(n=day)设置被查询到的某天日期颜色，大小showDayi.setFont(new Font(Time

31、sRoman,Font.BOLD,24);showDayi.setForeground(Color.cyan); else showDayi.setFont(new Font(TimesRoman,Font.BOLD,14);showDayi.setForeground(Color.gray);if(i%7=6)showDayi.setForeground(Color.green);/ 一个月内为周六的所有日期颜if(i%7=0)showDayi.setForeground(Color.orange);/ 一个月内为周日的所有日期颜 n+;for(int i=0;iw_num;i+)showD

32、ayi.setText();/ 每月月初前为空for(int i=w_num+month_num;i42;i+)showDayi.setText();/ 每月月末后为空/set、get 函数 public void setYear(int y)year=y;note.setYear(year);public int getYear()return year;public void setMonth(int m)month=m;note.setMonth(month);public int getMonth()return month;public void setDay(int d)day=d

33、;note.setDay(day);public int getDay()return day;/LinkData.java/连接数据库import java.sql.*;public class LinkData private Connection con = null;private Statement stmt = null;public LinkData()String driver = org.hsqldb.jdbcDriver;String user = sa;String url = jdbc:hsqldb:hsql:localhost;String pass =;tryCla

34、ss.forName(driver);con = DriverManager.getConnection( url, user, pass );catch( Exception e )e.printStackTrace();修改信息public boolean modifyMessage( String sql ) throws SQLException boolean b = false;stmt = con.createStatement();b = stmt.execute( sql );stmt.close();stmt = null;return b;/ 获彳导 ResultSetp

35、ublic ResultSet query( String sql ) throws SQLExceptionreturn con.createStatement().executeQuery(sql);public void close()if( con != null )trycon.close();catch( SQLException ex )System.out.println(数据库关闭异常!);/Note.javaimport java.awt.*;import java.awt.event.*;import java.io.File;import java.sql.Result

36、Set;import java.sql.SQLException;import java.util.Calendar;/import java.util.Hashtable;import javax.swing.*;public class Note extends JPanel implements ActionListenerprivate JTextArea jta;private JScrollPane jsp;private JButton add,change,delete,refresh;private JLabel time_label;int year,month,day;p

37、rivate String num =;private boolean flag = false;private int data_num = 0;CalendarPad calendar;Note(CalendarPad calendar)/ 构造函数 this.calendar=calendar;year = calendar.getYear();month = calendar.getMonth();day = calendar.getDay();time_label=new JLabel(+year+年+month+月+day+日,JLabel.CENTER);/股置水 平对齐方式为后

38、中jta = new JTextArea(12,24);jsp = new JScrollPane(jta); /为文本区添加滚动条 add = new JButton(添力口);change = new JButton(修改);delete = new JButton(删除)refresh = new JButton(刷新);launch();页面布局public void launch()add.addActionListener(this);change.addActionListener(this);delete.addActionListener(this);refresh.addA

39、ctionListener(this);/使按钮凸出显示add.setBorder(BorderFactory.createRaisedBevelBorder();change.setBorder(BorderFactory.createRaisedBevelBorder();delete.setBorder(BorderFactory.createRaisedBevelBorder();refresh.setBorder(BorderFactory.createRaisedBevelBorder();time_label.setFont(new Font(TimesRoman,Font.BO

40、LD,16);time_label.setForeground(Color.magenta); /洋红色jta.setFont(new Font(华文行楷”,Font.PLAIN,16 );jta.setEditable(false);/ 文本区不可被编辑/note面板布局 setLayout(new BorderLayout();add(time_label,North);add(jsp,Center);将添加滚动条的文本区，放在右侧面板的中间位置JPanel pSouth=new JPanel();pSouth.add(add);pSouth.add(change);pSouth.add(

41、delete);pSouth.add(refresh);add(pSouth,South);/按钮事件处理Overridepublic void actionPerformed(ActionEvent e) if(e.getSource(尸add)new AddTest( +year+month+day ,data_num );else if(e.getSource(尸change) if( isExit( +year+month+day )new ChangeTest( +year+month+day );elseJOptionPane.showMessageDialog(null,当天无备

42、忘录！); else if(e.getSource() = delete) if( isExit( +year+month+day ) )num = JOptionPane.showInputDialog(null,请输入你要删除的备忘录的编 号：”)；if( num = null )else if( num.equals()JOptionPane.showMessageDialog(null,所要删除的当天的编号不能 为空！);num = JOptionPane.showInputDialog(null,请输入你要删除的备忘录 的编号：);else try delLog(year,month

43、,day); catch (SQLException e1) e1.printStackTrace();else);JOptionPane.showMessageDialog(null,当天无备忘录，不用删除! else if(e.getSource()=refresh)getLog( year, month, day );JOptionPane.showMessageDialog(null,备忘录已刷新成功！)；else/在文本区上方添加当前日期public void setTimeLabel(int year,int month,int day)time_label.setText(+ye

44、ar+年+month+月+day+日);public void setText(String s) jta.setText;给文本区赋值/判断某天信息是否存在public boolean isExit( String date )LinkData ld_connection = new LinkData();String sql = select * from mymemo where date=+date+”;ResultSet rs = null;try rs = ld_connection.query(sql);if( rs.next() )rs.close();ld_connectio

45、n.close();return true;catch (SQLException e)return false;读取某天的备忘录public void getLog(int year,int month,int day)/连接数据库data_num = 0;LinkData ld_connection = new LinkData();ResultSet rs = null;String data =;String time =+year+month+day;String sql = select * from mymemo where date=+time+;if( isExit(time

46、) )try rs = ld_connection.query(sql);while( rs.next()data += rs.getString( 2 )+.+rs.getString( 3 )+n; data_num +;catch (SQLException e) e.printStackTrace();jta.setText( data );elsejta.setText(无记录)；删除数据库里面的内容public void delLog(int year,int month,int day) throws SQLExceptionLinkData ld_connection = ne

47、w LinkData();String str=删除+year+年+month+月+day+日+第+ num +”条的记录吗？；String time =+year+month+day;ResultSet rs = null;String sel_sql = select * from mymemo where date= +time+and num = +num+;rs = ld_connection.query(sel_sql);if( rs.next() )int ok = JOptionPane.showConfirmDialog( this,str,” 询 问 ”,JOptionPa

48、ne.YES_NO_OPTION);if( ok=JOptionPane.YES_OPTION )String sql = delete from mymemo where date= +time+and num =+num+;trydata_num = 0;ld_connection.modifyMessage(sql); if( !isExit(time) jta.setText(无记录);elseint i = 0;String口 data_str = new String100;String sql_ref = select * from mymemo where date= +tim

49、e+”; rs = ld_connection.query( sql_ref ); while( rs.next() ) data_stri = rs.getString( 3 );i +;String del_sql = delete from mymemo where date= +time+; ld_connection.modifyMessage(del_sql);for( int j = 0; j i; j + )String insert_sql = insert into mymemovalues。+time+,+(j+1)+,+data_strj+);ld_connection

50、.modifyMessage(insert_sql); data_num = i; catch( Exception e) e.printStackTrace(); elseJOptionPane.showMessageDialog( null,你输入的编号不存在！)；rs.close();ld_connection.close();/get、 set 函数 public void setYear(int year) this.year=year;public int getYear()return year;public void setMonth(int month)this.month=

51、month;public int getMonth()return month;public void setDay(int day)this.day=day;public int getDay()return day;/AddTest.javaimport java.awt.*;import java.awt.event.*;import java.awt.image.BufferedImage;import java.io.File;import java.sql.SQLException;import javax.imageio.ImageIO;import javax.swing.*;

52、public class AddTest extends JFrameprivate JLabel signal,picture;private JTextArea editer;private JScrollPane jsp;private JButton Ok,Cancle,Clear;private int number;private String date;public AddTest ( String date, int data_num )this.number = data_num;this.date = date;signal = new JLabel(请输入你要添加的信息：

53、)；picture = new JLabel(new ImageIcon(photos/17.jpg);/ 背景标签 editer = new JTextArea();jsp = new JScrollPane(editer);/ 为文本区添加滚动条Ok = new JButton(确定);Cancle = new JButton(取消);Clear = new JButton(清空);launch();public void launch()JPanel p = (JPanel)getContentPane();Ok.addActionListener(new addEvent();Canc

54、le.addActionListener(new addEvent();Clear.addActionListener(new addEvent();setLayout(null);Ok.setBorder(BorderFactory.createRaisedBevelBorder(); / 使按钮凸出显示Cancle.setBorder(BorderFactory.createRaisedBevelBorder(); 使按钮凸出显示Clear.setBorder(BorderFactory.createRaisedBevelBorder(); / 使按钮凸出显示/*设置背景图片picture

55、.setBounds(0,0,300,300);p.add(picture);p.setOpaque(false);/使内容窗格透明/把背景图片添加到分层窗格的最底层作为背景getLayeredPane().add(picture,new Integer(Integer.MIN_VALUE);/*设置图标BufferedImage icon = null;tryicon = ImageIO.read( new File( photos/12.jpg);this.setIconImage(icon);catch( Exception e ) signal.setFont(new Font(华文行

56、楷”,Font.PLAIN,18 );signal.setForeground(Color.red);signal.setBounds(55,20,200,20);p.add(signal);editer.setLineWrap(true);/ 自动换行editer.setFont(new Font(华文行楷”,Font.PLAIN,16 );jsp.setBounds(40,60,210,150);p.add(jsp);Ok.setBounds(60,230,60,20);p.add(Ok);Cancle.setBounds(120,230,60,20);p.add(Cancle);Clea

57、r.setBounds(180,230,60,20);p.add(Clear);setTitle(添加备忘录);setBounds(300,200,300,300);setResizable(false); 窗 口 不能被拖动 setVisible(true);setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);class addEvent implements ActionListenerOverridepublic void actionPerformed(ActionEvent e) / TODO Auto-generated method st

58、ubObject source = e.getSource();if(source = Ok)if(editer.getText().equals() JOptionPane.showMessageDialog(null,请输入你要添力口的内容！); elseLinkData ld_connection = new LinkData();String insert_sql = insert into mymemo values。 +date+,+(number+1)+,+editer.getTextO+);try ld_connection.modifyMessage(insert_sql);

59、 catch (SQLException e1) e1.printStackTrace();JOptionPane.showMessageDialog(null,备忘录已添加成功！);ld_connection.close(); dispose();else if(source = Cancle)int n;if(editer.getText().equals()n = JOptionPane.showCon巾rmDialog(null,你还未输入任何信息，确定 取消添加？,询问,JOptionPane.YES_NO_OPTION);if(n = JOptionPane.YES_OPTION)

60、dispose。；/退出添加界面elsen = JOptionPane.showConfirmDialog(null,确定取消添加这条内容? 询问,JOptionPane.YES_NO_OPTION);if(n = JOptionPane.YES_OPTION) dispose。；/退出添加界面else if(source = Clear)editer.setText(null); 清空文本区else/ChangeTest.javaimport java.awt.*;import java.awt.event.*;import java.awt.image.BufferedImage;impo