java 备忘录编写源代码及运行界面截图参考模板

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;/ 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(&quo

3、t;3.jpg"); */jl1 =new JLabel( "登录名：");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

4、launchFrame()JPanel p = (JPanel) getContentPane();jl3.setText( getcode() );jl3.setForeground(Color.cyan); /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.addActionListen

5、er(this); /为“登录”按钮添加监听器Cancle.addActionListener(this); /为“取消”按钮添加监听器1 / 32Ok.setBorder(BorderFactory.createRaisedBevelBorder(); /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nullpicture.setBounds(0,0,500,330);p.add(picture);p.setOpaqu

6、e(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.setForeground(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 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

9、验证码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 /获取的字符不在范围内，获取未成功；i-; / i-，保证最终获取到四位的验证

10、码 return str; /从文件中读取正确的用户名public static String seekname() throws IOExceptionInputStream fin1 = new FileInputStream ("message用户名.txt");byte c = new byte10;int len=0;while (len = fin1.read(c)!=-1)name1 = new String (c,0,len);return name1; /从文件中读取正确的登录密码public static String seekpass() throws

11、 IOExceptionInputStream fin2 = new FileInputStream ("message登录密码.txt");byte c = new byte10;int len=0;while (len = fin2.read(c)!=-1)pass1 = new String (c,0,len); return pass1;/判断文本框是否为空public boolean isEmpty( JTextField jt )if( jt.getText().equals( "" )return true;return false;/判断

12、操作是否非法，主要是针对各文本框而言的；若文本框为空，提示填写信息public boolean isLegal()if( isEmpty( jt1 ) ) JOptionPane.showMessageDialog(null, "用户名不能为空！" );return false;else if( isEmpty(jt2 ) )JOptionPane.showMessageDialog(null, "密码不能为空！" );return false;else if( isEmpty( jt3) )JOptionPane.showMessageDialog(n

13、ull, "请输入验证码！" );return false;elsereturn true; /按钮事件处理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() /调用isLegal()函数，保证文本框不为空try /调用函数seekname(),seekpass(),文件可能不存在 if(name2.equals(seekname() if(pass2.equals(seekpass()if(code2.equalsIgnoreCase( code1 ) /在用户登录信息完全正确的条件下，进入备忘录（含日历）JOptionPane.showMessageDialog(null, "登录成功！");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();/关闭登录界面elseJOptionPane.showMessageDialog(this,"验证码错误，请重新输入！","错误提示",JOptionPane.ERROR_MESSAGE);jl3.setText( getcode() );elseJOpti

16、onPane.showMessageDialog(this,"密码错误，请重新输入！","错误提示",JOptionPane.ERROR_MESSAGE);elseJOptionPane.showMessageDialog(this,"您输入的用户名不存在，请重新输入！","错误提示",JOptionPane.ERROR_MESSAGE); catch (HeadlessException | IOException e1) / TODO Auto-generated catch blocke1.printStac

17、kTrace();if(source = Cancle)/询问对话框int choose =JOptionPane.showConfirmDialog(null, "确定取消登录？","询问",JOptionPane.YES_NO_OPTION); if( choose = JOptionPane.YES_OPTION ) System.exit(0); /退出登录系统 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、函数 public void launch() showYear.setForeground(Color.blue); showYear.setFont(new Font("宋体",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();/使按钮凸出 nextYear.setBorder(BorderFactory.createRaisedBevelBorder(); /年 public void setYear(int year) this.year=year; showYear.setText(""+year); public int getYear() return year; /事件类 class addEvent implement

22、s ActionListener Override public void actionPerformed(ActionEvent e) if(e.getSource()=lastYear) /对年份进行判断操作 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(); /年份控制在一定范围 if(year>=-10000&&year<=10000) showYear.setText(""+year); cal.setYear(year); cal.setCal(year,cal.getMonth(); else JOptionPane.showMessageDialog(n

24、ull,"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.java/对月份的选择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(); /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(

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; / 事件处理 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.

31、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 Thread 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

32、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; public Clock(CalendarPad cp) this.cp=cp; setSize(280,40); setBackground( Color.pink ); t = new Thread(

33、 this ); /实例化线程 t.start(); /调用线程 Override public void run() while(true) try Thread.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

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，得到当前日期和时间 g.setFont(new Font("华文行

35、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.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();/ 实例化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; /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);

38、 ChangeYear.setYear(year); ChangeMonth=new Month(this); ChangeMonth.setMonth(month); 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*/ BufferedImage icon = null; try icon = ImageIO.read( new File( "photos/7.jpg" ) )

39、; this.setIconImage(icon); catch( Exception e ) /*左面板中间部分的面板布置*/ leftCenter.setLayout(new GridLayout(7,7); title=new JLabel7; showDay=new JTextField42; /day用不可被编辑的文本框显示 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(); /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，设置前景色 title6.setForeground(Color.green);/设置 “星期六 ”字体颜色 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); p.add(ChangeMonth); leftNorth.add(p); /*左侧面板整体布置*/ leftPanel.setLayout( new BorderLayout() ); leftPanel.add( leftNorth,"North" ); leftPanel.add

42、( 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(负数表示公元前)" ),"North") ; note=new Note(this); /当前日历 rightPanel.add(note,"Center"); /

43、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.HORIZONTAL_SPLIT 可让分隔窗格中的两个 Component 从左到右排列*/ /*Container c = g

44、etContentPane(); 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 ，比较突兀 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 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(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_WE