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Java实现超级实用的日记本

转载 作者：qq735679552 更新时间：2022-09-29 22:32:09 26 4
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演示图 。

Java实现超级实用的日记本

演示图 。

Java实现超级实用的日记本

CalendarApp.java 。

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package calenda;
 
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.FlowLayout;
import java.awt.Font;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.io.File;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;
import java.util.Locale;
 
import javax.swing.JApplet;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
import javax.swing.border.TitledBorder;
 
public class CalendarApp extends JFrame{
   
   private CalendarPanel calendarPanel= new CalendarPanel();
   private static JLabel jlblLearn= new JLabel( "开始准备记单词" );
   private String versionID= "欢迎使用版本1.0.20150427" ;
   private JLabel jlblVersionID= new JLabel(versionID);
   private JButton jbtPrior= new JButton( "←" );
   private JButton jbtNext= new JButton( "→" );
   private JButton jbtDiary= new JButton( "写日记" );
   private JButton jbtScanDiary= new JButton( "看日记" );
   private static int year;
   public void init()
   {
     year=calendarPanel.getYear();
     calendarPanel.setBackground(Color.WHITE);
     /**
      * 添加功能性按钮到日历面板下方
      */
     JPanel jpButtons= new JPanel( new FlowLayout());
     //设置按钮背景色为白色
     jbtPrior.setBackground(Color.WHITE);
     jbtNext.setBackground(Color.WHITE);
     jbtDiary.setBackground(Color.WHITE);
     jbtScanDiary.setBackground(Color.WHITE);
     /*
      * 给四个按钮添加鼠标事件，使其更加炫酷
      */
     //1、后退按钮
     jbtPrior.addMouseListener(new MouseListener(){
 
       @Override
       public void mouseClicked(MouseEvent arg0) {
         // TODO Auto-generated method stub
         
       }
 
       @Override
       public void mouseEntered(MouseEvent arg0) {
         // TODO Auto-generated method stub
         jbtPrior.setForeground(Color.GREEN);
       }
 
       @Override
       public void mouseExited(MouseEvent arg0) {
         // TODO Auto-generated method stub
         jbtPrior.setForeground(Color.BLACK);
       }
 
       @Override
       public void mousePressed(MouseEvent arg0) {
         // TODO Auto-generated method stub
         
       }
 
       @Override
       public void mouseReleased(MouseEvent arg0) {
         // TODO Auto-generated method stub
         
       }
       
     });
     //2、前进按钮
         jbtNext.addMouseListener(new MouseListener(){
 
           @Override
           public void mouseClicked(MouseEvent arg0) {
             // TODO Auto-generated method stub
             
           }
 
           @Override
           public void mouseEntered(MouseEvent arg0) {
             // TODO Auto-generated method stub
             jbtNext.setForeground(Color.GREEN);
           }
 
           @Override
           public void mouseExited(MouseEvent arg0) {
             // TODO Auto-generated method stub
             jbtNext.setForeground(Color.BLACK);
           }
 
           @Override
           public void mousePressed(MouseEvent arg0) {
             // TODO Auto-generated method stub
             
           }
 
           @Override
           public void mouseReleased(MouseEvent arg0) {
             // TODO Auto-generated method stub
             
           }
           
         });
         //3、写日记按钮
         jbtDiary.addMouseListener(new MouseListener(){
 
           @Override
           public void mouseClicked(MouseEvent arg0) {
             // TODO Auto-generated method stub
             
           }
 
           @Override
           public void mouseEntered(MouseEvent arg0) {
             // TODO Auto-generated method stub
             jbtDiary.setForeground(Color.GREEN);
           }
 
           @Override
           public void mouseExited(MouseEvent arg0) {
             // TODO Auto-generated method stub
             jbtDiary.setForeground(Color.BLACK);
           }
 
           @Override
           public void mousePressed(MouseEvent arg0) {
             // TODO Auto-generated method stub
             
           }
 
           @Override
           public void mouseReleased(MouseEvent arg0) {
             // TODO Auto-generated method stub
             
           }
           
         });
         //4、看日记按钮
         jbtScanDiary.addMouseListener(new MouseListener(){
 
           @Override
           public void mouseClicked(MouseEvent arg0) {
             // TODO Auto-generated method stub
             
           }
 
           @Override
           public void mouseEntered(MouseEvent arg0) {
             // TODO Auto-generated method stub
             jbtScanDiary.setForeground(Color.GREEN);
           }
 
           @Override
           public void mouseExited(MouseEvent arg0) {
             // TODO Auto-generated method stub
             jbtScanDiary.setForeground(Color.BLACK);
           }
 
           @Override
           public void mousePressed(MouseEvent arg0) {
             // TODO Auto-generated method stub
             
           }
 
           @Override
           public void mouseReleased(MouseEvent arg0) {
             // TODO Auto-generated method stub
             
           }
           
         });
     jpButtons.add(jbtPrior);
     jpButtons.add(jbtNext);
     jpButtons.add(jbtDiary);
     jpButtons.add(jbtScanDiary);
     jpButtons.setBackground(Color.WHITE);
     /**
      * 添加日历主要组件
      */
     JPanel jpCalendar=new JPanel(new BorderLayout());
     jpCalendar.add(calendarPanel,BorderLayout.CENTER);
     jpCalendar.add(jpButtons,BorderLayout.SOUTH);
     
     /**
      * 添加背单词模块
      */
     JPanel jpLearn=new JPanel(new FlowLayout());
     jpLearn.setBorder(new TitledBorder("开心背单词"));
     jpLearn.add(jlblLearn);
     jpLearn.setBackground(Color.WHITE);
     /**
      * 添加版本号信息
      */
     JPanel jpVersionID=new JPanel(new FlowLayout());
     Font font=new Font("宋体",Font.PLAIN,4);
     jpVersionID.setFont(font);
     jpVersionID.add(jlblVersionID);
     jpVersionID.setBackground(Color.WHITE);
     /**
      * 容器面板，合并记单词与版本号模块
      */
     JPanel jpBelow= new JPanel( new BorderLayout( 2 , 1 ));
     jpBelow.add(jpLearn,BorderLayout.CENTER);
     jpBelow.add(jpVersionID,BorderLayout.SOUTH);
     
     this .add(jpCalendar,BorderLayout.CENTER);
     this .add(jpBelow,BorderLayout.SOUTH);
     this .setBackground(Color.WHITE);
     this .setSize( 700 , 500 );
     this .setLocationRelativeTo( null );
     this .setTitle( "多功能日历" );
     this .setDefaultCloseOperation(EXIT_ON_CLOSE);
     this .setVisible( true );
     
     jbtScanDiary.addActionListener( new ActionListener()
     {
       @Override
       public void actionPerformed(ActionEvent e) {
           new Thread( new thread_scanDiary()).start();
       }
     });
     jbtDiary.addActionListener( new ActionListener()
     {
 
       @Override
       public void actionPerformed(ActionEvent e) {
         //获取本地系统时间
         SimpleDateFormat df = new SimpleDateFormat( "yyyy-MM-dd-HH-mm-ss" ); //设置日期格式
         String time=df.format( new Date());
         new Thread( new thread_keepDiary(time)).start();
       }
     });
     
     
     
     jbtPrior.addActionListener( new ActionListener()
     {
       @Override
       public void actionPerformed(ActionEvent e) {
         // TODO Auto-generated method stub
         int currentMonth=calendarPanel.getMonth();
         if (currentMonth== 0 )
         {
           calendarPanel.setYear(year);
           year--;
         }
         calendarPanel.setMonth((currentMonth- 1 )% 12 );
       }
     });
     
     jbtNext.addActionListener( new ActionListener()
     {
 
       @Override
       public void actionPerformed(ActionEvent e) {
         // TODO Auto-generated method stub
         int currentMonth=calendarPanel.getMonth();
         if (currentMonth== 11 )
         {
           calendarPanel.setYear(++year);
         }
         calendarPanel.setMonth((currentMonth+ 1 )% 12 );
       }
     });
   }
   
 
   public static void main(String[] args) throws InterruptedException {
     // TODO Auto-generated method stub
     SwingUtilities.invokeLater( new Runnable(){
       @Override
       public void run() {
         // TODO Auto-generated method stub
         new CalendarApp().init();
         new Thread( new thread_showEnglish(jlblLearn)).start();
       }
     });
   }
   
 
}

CalendarPanel.java 。

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/**
  * 本程序功能是进行日历主面板布局
  */
package calenda;
 
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Font;
import java.awt.GridLayout;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.text.DateFormatSymbols;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.GregorianCalendar;
import java.util.Locale;
 
import javax.swing.*;
import javax.swing.border.LineBorder;
 
public class CalendarPanel extends JPanel {
   /**
    * 声明数据变量
    */
   private static final long serialVersionUID = 1L;
   private JLabel jlblHeader= new JLabel( " " ,JLabel.CENTER);
   private JLabel[] jlblDay= new JLabel[ 49 ];
   private Calendar calendar= new GregorianCalendar();
   private int year0=calendar.get(Calendar.YEAR);
   private int month0=calendar.get(Calendar.MONTH);
   private int day0=calendar.get(Calendar.DAY_OF_MONTH);
   private int month;
   private int year;
   private int day;
   private JPanel jpDays= new JPanel( new GridLayout( 0 , 7 ));
   Font font1= new Font( "宋体" ,Font.ITALIC, 20 );
   Font font2= new Font( "宋体" ,Font.BOLD, 26 );
   Font font3= new Font( "宋体" ,Font.BOLD, 30 );
   public CalendarPanel()
   {
     //设置日历头部件以及日期标签的背景色为白色
     jlblHeader.setBackground(Color.WHITE);
     jpDays.setBackground(Color.WHITE);
     //声明每个标签
     for ( int i= 0 ;i< 49 ;i++)
     {
       jlblDay[i]= new JLabel();
       jlblDay[i].setBorder( new LineBorder(Color.LIGHT_GRAY, 1 ));
       jlblDay[i].setHorizontalAlignment(JLabel.RIGHT);
       jlblDay[i].setVerticalAlignment(JLabel.TOP);
     }
     calendar= new GregorianCalendar();
     month=calendar.get(Calendar.MONTH);
     year=calendar.get(Calendar.YEAR);
     day=calendar.get(Calendar.DATE);
     //更新日历
     updateCalendar();
     showHeader();
     showDays();
     //添加到主面板
     this .setLayout( new BorderLayout());
     this .add(jlblHeader, BorderLayout.NORTH);
     this .add(jpDays, BorderLayout.CENTER);
   }
   private void showHeader()
   {
     SimpleDateFormat sdf= new SimpleDateFormat( "MMMM yyyy" ,Locale.CHINA);
     String header=sdf.format(calendar.getTime());
     jlblHeader.setText(header);
     jlblHeader.setForeground(Color.BLUE);
     jlblHeader.setFont(font3);
   }
   private void showDayNames()
   {
     DateFormatSymbols dfs= new DateFormatSymbols(Locale.CHINA);
     String dayNames[]=dfs.getWeekdays();
     for ( int i= 0 ;i< 7 ;i++)
     {
       jlblDay[i].setText(dayNames[i+ 1 ]);
       jlblDay[i].setForeground(Color.BLUE);
       jlblDay[i].setHorizontalAlignment(JLabel.CENTER);
       jlblDay[i].setFont(font2);
       jpDays.add(jlblDay[i]);
     }
   }
   public void showDays()
   {
     jpDays.removeAll();
     showDayNames();
     int startingDayOfMonth=calendar.get(Calendar.DAY_OF_WEEK);
     Calendar cloneCalendar=(Calendar)calendar.clone();
     cloneCalendar.add(Calendar.DATE, - 1 );
     int daysInPrecedingMonth=cloneCalendar.getActualMaximum(Calendar.DAY_OF_MONTH);
     for ( int i= 0 ;i<startingDayOfMonth- 1 ;i++)
     {
       jlblDay[i+ 7 ].setForeground(Color.LIGHT_GRAY);
       jlblDay[i+ 7 ].setHorizontalAlignment(JLabel.CENTER);
       jlblDay[i+ 7 ].setText(daysInPrecedingMonth-startingDayOfMonth+ 2 +i+ "" );
       jlblDay[i+ 7 ].setFont(font1);
       jpDays.add(jlblDay[i+ 7 ]);
     }
     int daysInCurrentMonth=calendar.getActualMaximum(Calendar.DAY_OF_MONTH);
     for ( int i= 1 ;i<=daysInCurrentMonth;i++)
     {
       if (i==day0&&year==year0&&month==month0)
       {
         jlblDay[i- 2 +startingDayOfMonth+ 7 ].setForeground(Color.red);
         jlblDay[i- 2 +startingDayOfMonth+ 7 ].setHorizontalAlignment(JLabel.CENTER);
         jlblDay[i- 2 +startingDayOfMonth+ 7 ].setText(i+ "" );
         jlblDay[i- 2 +startingDayOfMonth+ 7 ].setFont(font2);
         jpDays.add(jlblDay[i- 2 +startingDayOfMonth+ 7 ]);
       }
       else
       {
         jlblDay[i- 2 +startingDayOfMonth+ 7 ].setForeground(Color.darkGray);
         jlblDay[i- 2 +startingDayOfMonth+ 7 ].setHorizontalAlignment(JLabel.CENTER);
         jlblDay[i- 2 +startingDayOfMonth+ 7 ].setText(i+ "" );
         jlblDay[i- 2 +startingDayOfMonth+ 7 ].setFont(font1);
         jpDays.add(jlblDay[i- 2 +startingDayOfMonth+ 7 ]);
       }
     }
     int j= 1 ;
     for ( int i=daysInCurrentMonth- 1 +startingDayOfMonth+ 7 ;i% 7 != 0 ;i++)
     {
       jlblDay[i].setForeground(Color.LIGHT_GRAY);
       jlblDay[i].setHorizontalAlignment(JLabel.CENTER);
       jlblDay[i].setText(j++ + "" );
       jlblDay[i].setFont(font1);
       jpDays.add(jlblDay[i]);
     }
     jpDays.repaint();
   }
   public void updateCalendar()
   {
     calendar.set(Calendar.YEAR, year);
     calendar.set(Calendar.MONTH, month);
     calendar.set(Calendar.DATE, 1 );
     month=calendar.get(Calendar.MONTH);
     year=calendar.get(Calendar.YEAR);
     day=calendar.get(Calendar.DATE);
   }
   public int getMonth()
   {
     return month;
   }
   public int getYear()
   {
     return year;
   }
   public void setMonth( int month)
   {
     this .month=month;
     updateCalendar();
     showHeader();
     showDays();
   }
   public void setYear( int year)
   {
     this .year=year;
     updateCalendar();
     showHeader();
     showDays();
   }
}

Diary.java 。

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/**
  * 本程序为日记类
  * 最后修改日期为2015-4-27
  */
package calenda;
 
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
 
import javax.swing.JOptionPane;
 
public class Diary implements Serializable {
 
   /**
    * 数据域
    */
   //私有变量
   private String filename;
   private String theme;
   private String content;
   //含参构造方法
   public Diary(String filename,String theme,String content)
   {
     if (theme.length()== 0 )
     {
       JOptionPane.showMessageDialog( null , "无论心情如何，总得有个主题吧！" );
     }
     else if (content.length()== 0 )
     {
       JOptionPane.showMessageDialog( null , "把开心的不开心的都尽情写下吧！" );
     }
     else
     {
       File CalendarDiaryFile= new File( "C:/Calendar/Diary" );
       if (!CalendarDiaryFile.exists())
       {
         CalendarDiaryFile.mkdirs();
       }
     this .filename= "C:/Calendar/Diary/" +filename+ ".dat" ;
     this .theme=theme;
     this .content=content;
     }
   }
   public void write() throws Exception
   {
     File file= new File(filename);
     FileOutputStream fos = new FileOutputStream(file);
     ObjectOutputStream oos = new ObjectOutputStream(fos);
     oos.writeObject( this );
     oos.close();
   }
   public Diary read() throws Exception
   {
     File file= new File(filename);
     FileInputStream fis= new FileInputStream(file);
     ObjectInputStream ois = new ObjectInputStream(fis);
     Diary d=(Diary) ois.readObject();
     ois.close();
     return d;
   }
   /**
    * 变量get()方法
    * @return
    */
   public String getTheme()
   {
     return this .theme;
   }
   public String getContent()
   {
     return this .content;
   }
   /**
    * 变量set()方法
    * @param comment
    */
}

thread_keepDiary.java 。

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/**
  * 备忘录线程
  * 用于单击标签时可以存储日记
  * 目前只考虑年月日时间点，不标记具体时间点
  */
package calenda;
 
import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import java.nio.file.Files;
 
import javax.swing.*;
 
public class thread_keepDiary extends JFrame implements Runnable {
 
   private JFrame jf= this ;
   private JTextArea jta= new JTextArea();
   private JButton jbtSave= new JButton( "保存" );
   private JLabel jlblTitle= new JLabel( "主题" );
   private JTextField jtfTitle= new JTextField( 16 );
   private String id;
   public thread_keepDiary(String time)
   {
     
     JPanel jpTitle= new JPanel();
     jpTitle.setLayout( new BorderLayout());
     jpTitle.add(jlblTitle, BorderLayout.WEST);
     jpTitle.add(jtfTitle,BorderLayout.CENTER);
     jta.setLineWrap( true );
     jta.setWrapStyleWord( true );
     JScrollPane jsp= new JScrollPane(jta);
     jsp.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
     this .id=time;
     jbtSave.addActionListener( new ActionListener()
     {
       @Override
       public void actionPerformed(ActionEvent arg0) {
         // TODO Auto-generated method stub
         
         String theme=jtfTitle.getText().trim();
         String content=jta.getText();
         
         Diary d_today= new Diary(id,theme,content);
         try
         {
           d_today.write();
           JOptionPane.showMessageDialog( null , "保存成功！" );
           jf.dispose();
         }
         catch (Exception e)
         {
           e.printStackTrace();
         }
       }
     });
     this .setTitle( "备忘录" +id);
     this .add(jsp,BorderLayout.CENTER);
     this .add(jpTitle, BorderLayout.NORTH);
     this .add(jbtSave, BorderLayout.SOUTH);
     this .setSize( 500 , 500 );
     this .setLocationRelativeTo( null );
     this .setDefaultCloseOperation(DISPOSE_ON_CLOSE);
     
   }
   @Override
   public void run() {
     this .setVisible( true );
   }
 
}

thread_mottoSparkle.java 。

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package calenda;
 
import javax.swing.JLabel;
 
public class thread_mottoSparkle implements Runnable{
   private JLabel jlbl;
   public thread_mottoSparkle(JLabel jlbl)
   {
     this .jlbl=jlbl;
   }
   @Override
   public void run() {
     String content=jlbl.getText();
     int L=content.length();
     int index= 0 ;
     while ( true )
     {
       jlbl.setText(content.substring( 0 , index));
       try
       {
         Thread.sleep( 250 );
       }
       catch (Exception ex)
       {
         ex.printStackTrace();
       }
       index++;
       if (index==(L+ 1 ))
         index= 0 ;
     }
   }
 
}

thread_scanDiary.java 。

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/**
* 查看日记线程编写
*/
package calenda;
 
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import java.io.FileInputStream;
import java.io.ObjectInputStream;
 
import javax.swing.*;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.JTableHeader;
 
public class thread_scanDiary extends JFrame implements Runnable{
   /**
    * 声明变量区
    */
   private static final long serialVersionUID = 1L;
   //日历数据库存放路径
   private String path= "C:/Calendar/Diary" ;
   //日历总个数
   private static int num;
   //声明日历文件
   private File file;
   private File[] Diary;
   //声明JTable模型
   private JTable jtable;
   //声明格言面板及标签及内容等
   private JPanel jpMotto= new JPanel();
   private JLabel jlblMotto= new JLabel();
   private Font font= new Font( "宋体" ,Font.ITALIC, 20 );
   private String wish= "唯有专注，才能让自己成功。" ;
   //增加弹出式菜单2015-4-26
   private JPopupMenu jPopupMenu1= new JPopupMenu();
   //声明菜单
   private JMenuItem jmiScan= new JMenuItem( "查看" );
   private JMenuItem jmiDelete= new JMenuItem( "删除" );
   private JMenuItem jmiComment= new JMenuItem( "评论" );
   @Override
   public void run() {
     //尝试弹出式菜单增加子菜单
     jmiScan.setForeground(Color.RED);
     jmiDelete.setForeground(Color.RED);
     jmiComment.setForeground(Color.RED);
     jPopupMenu1.add(jmiScan);
     jPopupMenu1.addSeparator();
     jPopupMenu1.add(jmiDelete);
     jPopupMenu1.addSeparator();
     jPopupMenu1.add(jmiComment);
     /**
      * 智能获取文件列表
      */
     file = new File(path);
     Diary=file.listFiles();
     num=Diary.length;
     String[] head={ "  时间  " , "   主题   " };
     Object[][] diary= new Object[num][ 2 ];
     for ( int i= 0 ;i<num;i++)
     {
         try {
            String time=Diary[i].getName().replaceFirst( ".dat" ,  "" );
            FileInputStream fis= new FileInputStream(Diary[i]);
            ObjectInputStream ois = new ObjectInputStream(fis);
            Diary d=(Diary) ois.readObject();
            ois.close();
            String theme=d.getTheme();
            diary[i][ 0 ]=time;
            diary[i][ 1 ]=theme;
         }
         catch (Exception ex)
         {
           ex.printStackTrace();
         }
     }
     /**
      * 格言面板取
      */
     jlblMotto.setText(wish);
     jlblMotto.setFont(font);
     jlblMotto.setForeground(Color.RED);
     jpMotto.add(jlblMotto);
     jpMotto.setBackground(Color.WHITE);
     /**
      * 日历列表面板区
      */
     final DefaultTableModel tableModel= new DefaultTableModel(diary,head);
     jtable= new JTable(tableModel);
     jtable.setBackground(Color.WHITE);
     jtable.setRowHeight( 30 );
     jtable.setDoubleBuffered( false );
     jtable.setComponentPopupMenu(jPopupMenu1);
     jtable.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
     DefaultTableCellRenderer tcr = new DefaultTableCellRenderer(); // 设置table内容居中
     tcr.setHorizontalAlignment(SwingConstants.CENTER); // 这句和上句作用一样
     jtable.setDefaultRenderer(Object. class , tcr);
     JScrollPane jsp= new JScrollPane(jtable);
     
     /**
      * 弹出式菜单事件监听器编写
      */
     //查看菜单
     jmiScan.addActionListener( new ActionListener(){
       @Override
       public void actionPerformed(ActionEvent e) {
         if (jtable.getSelectedRow()>= 0 )
         {
           int index=jtable.getSelectedRow();
           String filename= "C:/Calendar/Diary/" +Diary[index].getName();
           File file= new File(filename);
           try
           {
             FileInputStream fis= new FileInputStream(file);
             ObjectInputStream ois = new ObjectInputStream(fis);
             Diary d=(Diary) ois.readObject();
             ois.close();
             JFrame jf= new JFrame();
             JTextArea jta= new JTextArea();
             JLabel jlblTitle= new JLabel( "主题" );
             JTextField jtfTitle= new JTextField( 16 );
             JPanel jpTitle= new JPanel();
             jpTitle.setLayout( new BorderLayout());
             jpTitle.add(jlblTitle, BorderLayout.WEST);
             jpTitle.add(jtfTitle,BorderLayout.CENTER);
             jta.setLineWrap( true );
             jta.setWrapStyleWord( true );
             JScrollPane jsp= new JScrollPane(jta);
             jsp.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
             jtfTitle.setText(d.getTheme());
             jta.setText(d.getContent());
             jtfTitle.setEditable( false );
             jta.setEditable( false );
             jf.setTitle( "日记 " +Diary[index].getName().replaceFirst( ".dat" ,  "" ));
             jf.add(jsp,BorderLayout.CENTER);
             jf.add(jpTitle, BorderLayout.NORTH);
             jf.setSize( 400 , 400 );
             jf.setLocationRelativeTo( null );
             jf.setDefaultCloseOperation(DISPOSE_ON_CLOSE);
             jf.setVisible( true );
           }
           catch (Exception ex)
           {
             ex.printStackTrace();
           }
         }
         else
         {
           JOptionPane.showMessageDialog( null , "请先选中一个日记！" );
         }
       }
     });
     //删除菜单
     jmiDelete.addActionListener( new ActionListener(){
       @Override
       public void actionPerformed(ActionEvent e) {
         if (jtable.getSelectedRow()>= 0 )
         {
           int index=jtable.getSelectedRow();
           String filename= "C:/Calendar/Diary/" +Diary[index].getName();
           File file= new File(filename);
           int option=JOptionPane.showConfirmDialog( null , "你确定要删除日记" +Diary[index].getName()+ "？" );
            if (option==JOptionPane.YES_OPTION)
            {
              file.delete();
              tableModel.removeRow(index);
             SwingUtilities.updateComponentTreeUI(jtable);
             JOptionPane.showMessageDialog( null , "删除成功！" );
            }
            else
            {
            }
         }
         else
         {
           JOptionPane.showMessageDialog( null , "请先选中一个日记！" );
         }
       }
       
     });
     /**
      * 主框架布局
      */
     this .add(jsp,BorderLayout.CENTER);
     this .add(jpMotto, BorderLayout.SOUTH);
     this .setSize( 600 , 500 );
     this .setDefaultCloseOperation(DISPOSE_ON_CLOSE);
     this .setLocationRelativeTo( null );
     this .setTitle( "日记列表" );
     this .setVisible( true );
     new Thread( new thread_mottoSparkle(jlblMotto)).start();
   }
}

thread_showEnglish.java 。

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package calenda;
 
import java.awt.Color;
import java.awt.Font;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.LineNumberReader;
import java.security.SecureRandom;
import java.util.Random;
 
import javax.swing.JLabel;
 
public class thread_showEnglish implements Runnable {
   private static JLabel jlbl= new JLabel();
   Font font= new Font( "���ו" ,Font.BOLD, 18 );
   public thread_showEnglish(JLabel jlbl)
   {
     this .jlbl=jlbl;
     jlbl.setForeground(Color.MAGENTA);
     jlbl.setFont(font);
   }
   @Override
   public void run() {
     // TODO Auto-generated method stub
     int count= 0 ;
     try
     {
       String file= "C:/Calendar/Learning/english_word.txt" ;
       BufferedReader input = new BufferedReader( new FileReader(file));
       while (input.readLine()!= null )
       {
         count++;
       }
       input.close();
       int [] word = new int [count];
       SecureRandom random = new SecureRandom();
       for ( int i= 0 ;i<count;i++)
       {
         word[i]=random.nextInt(count);
       }
       int index= 0 ;
       Thread.sleep( 1000 );
       while ( true )
       {
         BufferedReader input1 = new BufferedReader( new FileReader(file));
         String content= "" ;
         int line= 0 ;
         while ((content=input1.readLine())!= null )
         {
           if (line==word[index])
           {
             jlbl.setText(content);
           }
           line++;
         }
         if (index==count- 1 )
           index= 0 ;
         else
           index++;
         Thread.sleep( 3500 );
       }
     }
     catch (Exception ex)
     {
       ex.printStackTrace();
     }
   }
}

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