java源代码册 java源码之家

求JAVA入门小程序源代码

mport java.util.*;

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public class HuiWen

{

public static void main(String[] args)

{

Scanner in=new Scanner(System.in);

System.out.println("please input a String:");

String st=in.nextLine();

String s=st.toLowerCase();

int i=0;

int j=s.length()-1;

boolean t=true;

char first=s.charAt(i);

char last=s.charAt(j);

for(;ij;)

{

while(!(first='a'first='z'))

{

i++;

first=s.charAt(i);

}

while(!(last='a'last='z'))

{

j--;

last=s.charAt(i);

}

if(i=j)

break;

if(first==last)

{

i++;

j--;

first=s.charAt(i);

last=s.charAt(j);

}

else

{

t=false;

break;

}

}

if(t)

System.out.println(st+"是回文串");

else

System.out.println(st+"不是回文串");

}

}

//判断是否为回文字串

//什么实用的程序，说具体点！你要计算器的程序吗？

//下面是计算器的程序，把分拿来吧！

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

public class Calculator

{

public static void main(String[] args)

{

CalculatorFrame frame=new CalculatorFrame();

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

frame.setVisible(true);

}

}

class CalculatorFrame extends JFrame

{

public CalculatorFrame()

{

setTitle("Calculator");

CalculatorPanel panel=new CalculatorPanel();

add(panel);

pack();

}

}

class CalculatorPanel extends Panel

{

public CalculatorPanel()

{

setLayout(new BorderLayout());

result=0;

lastCommand="=";

start=true;

flag=true;

display=new JButton("0");

display.setEnabled(false);

add(display,BorderLayout.NORTH);

ActionListener insert=new InsertAction();

ActionListener command=new CommandAction();

panel=new JPanel();

panel.setLayout(new GridLayout(4,5));

addButton("7",insert);

addButton("8",insert);

addButton("9",insert);

addButton("/",command);

addButton("CE",command);

addButton("4",insert);

addButton("5",insert);

addButton("6",insert);

addButton("*",command);

addButton("Backspace",command);

addButton("1",insert);

addButton("2",insert);

addButton("3",insert);

addButton("-",command);

addButton("sqrt",command);

addButton("0",insert);

addButton(".",insert);

addButton("=",command);

addButton("+",command);

addButton("1/x",command);

add(panel,BorderLayout.CENTER);

}

private void addButton(String label,ActionListener listener)

{

JButton button=new JButton(label);

button.addActionListener(listener);

panel.add(button);

}

private class InsertAction implements ActionListener

{

public void actionPerformed(ActionEvent event)

{

String input=event.getActionCommand();

if(startflag)

{

display.setText("");

start=false;

}

if(flag)

display.setText(display.getText()+input);

}

}

private class CommandAction implements ActionListener

{

public void actionPerformed(ActionEvent event)

{

String command=event.getActionCommand();

if(command.equals("CE"))

{

display.setText("0");

start=true;

flag=true;

command="=";

}

else

if(startflag)

{

if(command.equals("-"))

{

display.setText(command);

start=false;

}

else

if((command.equals("1/x")||command.equals("sqrt"))flag)

calculate(Double.parseDouble(display.getText()),command);

else

if(flag)

lastCommand=command;

}

else

{

if(command.equals("Backspace")flag)

{

String s=display.getText();

char[] s1=s.toCharArray();

if(s.length()=2)

{

String s2=new String(s1,0,s.length()-1);

display.setText(s2);

}

else

{

display.setText("0");

start=true;

}

}

else if(flag)

{

calculate(Double.parseDouble(display.getText()),command);

lastCommand=command;

start=true;

}

}

}

}

public void calculate(double x,String command)

{

if(lastCommand.equals("+")) result+=x;

else if(lastCommand.equals("-")) result-=x;

else if(lastCommand.equals("/"))

{

if(x!=0)

result/=x;

else

{

display.setText("除数不能为0");

start=false;

flag=false;

return;

}

}

else if(lastCommand.equals("*")) result*=x;

else if(command.equals("1/x"))

{

if(x!=0)

result=1/x;

else

{

display.setText("除数不能为0");

start=false;

flag=false;

return;

}

}

else if(command.equals("sqrt"))

{

if(x=0)

result=Math.sqrt(x);

else

{

display.setText("函数输入无效");

start=false;

flag=false;

return;

}

}

else if(lastCommand.equals("=")) result=x;

display.setText(""+result);

}

private JButton display;

private JPanel panel;

private double result;

private String lastCommand;

private boolean start;

private boolean flag;

}

求用JAVA编写俄罗斯方块游戏的源代码

俄罗斯方块——java源代码提供 import java.awt.*; import java.awt.event.*; //俄罗斯方块类 public class ERS_Block extends Frame{ public static boolean isPlay=false; public static int level=1,score=0; public static TextField scoreField,levelField; public static MyTimer timer; GameCanvas gameScr; public static void main(String[] argus){ ERS_Block ers = new ERS_Block("俄罗斯方块游戏 V1.0 Author:Vincent"); WindowListener win_listener = new WinListener(); ers.addWindowListener(win_listener); } //俄罗斯方块类的构造方法 ERS_Block(String title){ super(title); setSize(600,480); setLayout(new GridLayout(1,2)); gameScr = new GameCanvas(); gameScr.addKeyListener(gameScr); timer = new MyTimer(gameScr); timer.setDaemon(true); timer.start(); timer.suspend(); add(gameScr); Panel rightScr = new Panel(); rightScr.setLayout(new GridLayout(2,1,0,30)); rightScr.setSize(120,500); add(rightScr); //右边信息窗体的布局 MyPanel infoScr = new MyPanel(); infoScr.setLayout(new GridLayout(4,1,0,5)); infoScr.setSize(120,300); rightScr.add(infoScr); //定义标签和初始值 Label scorep = new Label("分数:",Label.LEFT); Label levelp = new Label("级数:",Label.LEFT); scoreField = new TextField(8); levelField = new TextField(8); scoreField.setEditable(false); levelField.setEditable(false); infoScr.add(scorep); infoScr.add(scoreField); infoScr.add(levelp); infoScr.add(levelField); scorep.setSize(new Dimension(20,60)); scoreField.setSize(new Dimension(20,60)); levelp.setSize(new Dimension(20,60)); levelField.setSize(new Dimension(20,60)); scoreField.setText("0"); levelField.setText("1"); //右边控制按钮窗体的布局 MyPanel controlScr = new MyPanel(); controlScr.setLayout(new GridLayout(5,1,0,5)); rightScr.add(controlScr); //定义按钮play Button play_b = new Button("开始游戏"); play_b.setSize(new Dimension(50,200)); play_b.addActionListener(new Command(Command.button_play,gameScr)); //定义按钮Level UP Button level_up_b = new Button("提高级数"); level_up_b.setSize(new Dimension(50,200)); level_up_b.addActionListener(new Command(Command.button_levelup,gameScr)); //定义按钮Level Down Button level_down_b =new Button("降低级数"); level_down_b.setSize(new Dimension(50,200)); level_down_b.addActionListener(new Command(Command.button_leveldown,gameScr)); //定义按钮Level Pause Button pause_b =new Button("游戏暂停"); pause_b.setSize(new Dimension(50,200)); pause_b.addActionListener(new Command(Command.button_pause,gameScr)); //定义按钮Quit Button quit_b = new Button("退出游戏"); quit_b.setSize(new Dimension(50,200)); quit_b.addActionListener(new Command(Command.button_quit,gameScr)); controlScr.add(play_b); controlScr.add(level_up_b); controlScr.add(level_down_b); controlScr.add(pause_b); controlScr.add(quit_b); setVisible(true); gameScr.requestFocus(); } } //重写MyPanel类，使Panel的四周留空间 class MyPanel extends Panel{ public Insets getInsets(){ return new Insets(30,50,30,50); } } //游戏画布类 class GameCanvas extends Canvas implements KeyListener{ final int unitSize = 30; //小方块边长 int rowNum; //正方格的行数 int columnNum; //正方格的列数 int maxAllowRowNum; //允许有多少行未削 int blockInitRow; //新出现块的起始行坐标 int blockInitCol; //新出现块的起始列坐标 int [][] scrArr; //屏幕数组 Block b; //对方快的引用 //画布类的构造方法 GameCanvas(){ rowNum = 15; columnNum = 10; maxAllowRowNum = rowNum - 2; b = new Block(this); blockInitRow = rowNum - 1; blockInitCol = columnNum/2 - 2; scrArr = new int [32][32]; } //初始化屏幕，并将屏幕数组清零的方法 void initScr(){ for(int i=0;irowNum;i++) for (int j=0; jcolumnNum;j++) scrArr[j]=0; b.reset(); repaint(); } //重新刷新画布方法 public void paint(Graphics g){ for(int i = 0; i rowNum; i++) for(int j = 0; j columnNum; j++) drawUnit(i,j,scrArr[j]); } //画方块的方法 public void drawUnit(int row,int col,int type){ scrArr[row][col] = type; Graphics g = getGraphics(); tch(type){ //表示画方快的方法 case 0: g.setColor(Color.black);break; //以背景为颜色画 case 1: g.setColor(Color.blue);break; //画正在下落的方块 case 2: g.setColor(Color.magenta);break; //画已经落下的方法 } g.fill3DRect(col*unitSize,getSize().height-(row+1)*unitSize,unitSize,unitSize,true); g.dispose(); } public Block getBlock(){ return b; //返回block实例的引用 } //返回屏幕数组中(row,col)位置的属性值 public int getScrArrXY(int row,int col){ if (row 0 || row = rowNum || col 0 || col = columnNum) return(-1); else return(scrArr[row][col]); } //返回新块的初始行坐标方法 public int getInitRow(){ return(blockInitRow); //返回新块的初始行坐标 } //返回新块的初始列坐标方法 public int getInitCol(){ return(blockInitCol); //返回新块的初始列坐标 } //满行删除方法 void deleteFullLine(){ int full_line_num = 0; int k = 0; for (int i=0;irowNum;i++){ boolean isfull = true; L1:for(int j=0;jcolumnNum;j++) if(scrArr[j] == 0){ k++; isfull = false; break L1; } if(isfull) full_line_num++; if(k!=0 k-1!=i !isfull) for(int j = 0; j columnNum; j++){ if (scrArr[j] == 0) drawUnit(k-1,j,0); else drawUnit(k-1,j,2); scrArr[k-1][j] = scrArr[j]; } } for(int i = k-1 ;i rowNum; i++){ for(int j = 0; j columnNum; j++){ drawUnit(i,j,0); scrArr[j]=0; } } ERS_Block.score += full_line_num; ERS_Block.scoreField.setText(""+ERS_Block.score); } //判断游戏是否结束方法 boolean isGameEnd(){ for (int col = 0 ; col columnNum; col ++){ if(scrArr[maxAllowRowNum][col] !=0) return true; } return false; } public void keyTyped(KeyEvent e){ } public void keyReleased(KeyEvent e){ } //处理键盘输入的方法 public void keyPressed(KeyEvent e){ if(!ERS_Block.isPlay) return; tch(e.getKeyCode()){ case KeyEvent.VK_DOWN:b.fallDown();break; case KeyEvent.VK_LEFT:b.leftMove();break; case KeyEvent.VK_RIGHT:b.rightMove();break; case KeyEvent.VK_SPACE:b.leftTurn();break; } } } //处理控制类 class Command implements ActionListener{ static final int button_play = 1; //给按钮分配编号 static final int button_levelup = 2; static final int button_leveldown = 3; static final int button_quit = 4; static final int button_pause = 5; static boolean pause_resume = true; int curButton; //当前按钮 GameCanvas scr; //控制按钮类的构造方法 Command(int button,GameCanvas scr){ curButton = button; this.scr=scr; } //按钮执行方法 public void actionPerformed (ActionEvent e){ tch(curButton){ case button_play:if(!ERS_Block.isPlay){ scr.initScr(); ERS_Block.isPlay = true; ERS_Block.score = 0; ERS_Block.scoreField.setText("0"); ERS_Block.timer.resume(); } scr.requestFocus(); break; case button_levelup:if(ERS_Block.level 10){ ERS_Block.level++; ERS_Block.levelField.setText(""+ERS_Block.level); ERS_Block.score = 0; ERS_Block.scoreField.setText(""+ERS_Block.score); } scr.requestFocus(); break; case button_leveldown:if(ERS_Block.level 1){ ERS_Block.level--; ERS_Block.levelField.setText(""+ERS_Block.level); ERS_Block.score = 0; ERS_Block.scoreField.setText(""+ERS_Block.score); } scr.requestFocus(); break; case button_pause:if(pause_resume){ ERS_Block.timer.suspend(); pause_resume = false; }else{ ERS_Block.timer.resume(); pause_resume = true; } scr.requestFocus(); break; case button_quit:System.exit(0); } } } //方块类 class Block { static int[][] pattern = { {0x0f00,0x4444,0x0f00,0x4444},//用十六进至表示，本行表示长条四种状态 {0x04e0,0x0464,0x00e4,0x04c4}, {0x4620,0x6c00,0x4620,0x6c00}, {0x2640,0xc600,0x2640,0xc600}, {0x6220,0x1700,0x2230,0x0740}, {0x6440,0x0e20,0x44c0,0x8e00}, {0x0660,0x0660,0x0660,0x0660} }; int blockType; //块的模式号（0-6） int turnState; //块的翻转状态（0-3） int blockState; //快的下落状态 int row,col; //块在画布上的坐标 GameCanvas scr; //块类的构造方法 Block(GameCanvas scr){ this.scr = scr; blockType = (int)(Math.random() * 1000)%7; turnState = (int)(Math.random() * 1000)%4; blockState = 1; row = scr.getInitRow(); col = scr.getInitCol(); } //重新初始化块，并显示新块 public void reset(){ blockType = (int)(Math.random() * 1000)%7; turnState = (int)(Math.random() * 1000)%4; blockState = 1; row = scr.getInitRow(); col = scr.getInitCol(); dispBlock(1); } //实现“块”翻转的方法 public void leftTurn(){ if(assertValid(blockType,(turnState + 1)%4,row,col)){ dispBlock(0); turnState = (turnState + 1)%4; dispBlock(1); } } //实现“块”的左移的方法 public void leftMove(){ if(assertValid(blockType,turnState,row,col-1)){ dispBlock(0); col--; dispBlock(1); } } //实现块的右移 public void rightMove(){ if(assertValid(blockType,turnState,row,col+1)){ dispBlock(0); col++; dispBlock(1); } } //实现块落下的操作的方法 public boolean fallDown(){ if(blockState == 2) return(false); if(assertValid(blockType,turnState,row-1,col)){ dispBlock(0); row--; dispBlock(1); return(true); }else{ blockState = 2; dispBlock(2); return(false); } } //判断是否正确的方法 boolean assertValid(int t,int s,int row,int col){ int k = 0x8000; for(int i = 0; i 4; i++){ for(int j = 0; j 4; j++){ if((int)(pattern[t][s]k) != 0){ int temp = scr.getScrArrXY(row-i,col+j); if (temp0||temp==2) return false; } k = k 1; } } return true; } //同步显示的方法 public synchronized void dispBlock(int s){ int k = 0x8000; for (int i = 0; i 4; i++){ for(int j = 0; j 4; j++){ if(((int)pattern[blockType][turnState]k) != 0){ scr.drawUnit(row-i,col+j,s); } k=k1; } } } } //定时线程 class MyTimer extends Thread{ GameCanvas scr; public MyTimer(GameCanvas scr){ this.scr = scr; } public void run(){ while(true){ try{ sleep((10-ERS_Block.level + 1)*100); } catch(InterruptedException e){} if(!scr.getBlock().fallDown()){ scr.deleteFullLine(); if(scr.isGameEnd()){ ERS_Block.isPlay = false; suspend(); }else scr.getBlock().reset(); } } } } class WinListener extends WindowAdapter{ public void windowClosing (WindowEvent l){ System.exit(0); } } 22

急需日历记事本JAVA源代码

import java.util.Calendar;

import javax.swing.*;

import java.awt.*;

import java.awt.event.*;

import java.io.*;

import java.util.Hashtable;

public class CalendarPad extends JFrame implements MouseListener

{

int year,month,day;

Hashtable hashtable;

File file;

JTextField showDay[];

JLabel title[];

Calendar 日历;

int 星期几;

NotePad notepad=null;

Month 负责改变月;

Year 负责改变年;

String 星期[]={"星期日","星期一","星期二","星期三","星期四","星期五","星期六"};

JPanel leftPanel,rightPanel;

public CalendarPad(int year,int month,int day)

{

leftPanel=new JPanel();

JPanel leftCenter=new JPanel();

JPanel leftNorth=new JPanel();

leftCenter.setLayout(new GridLayout(7,7));

rightPanel=new JPanel();

this.year=year;

this.month=month;

this.day=day;

负责改变年=new Year(this);

负责改变年.setYear(year);

负责改变月=new Month(this);

负责改变月.setMonth(month);

title=new JLabel[7];

showDay=new JTextField[42];

for(int j=0;j7;j++)

{

title[j]=new JLabel();

title[j].setText(星期[j]);

title[j].setBorder(BorderFactory.createRaisedBevelBorder());

leftCenter.add(title[j]);

}

title[0].setForeground(Color.red);

title[6].setForeground(Color.blue);

for(int i=0;i42;i++)

{

showDay[i]=new JTextField();

showDay[i].addMouseListener(this);

showDay[i].setEditable(false);

leftCenter.add(showDay[i]);

}

日历=Calendar.getInstance();

Box box=Box.createHorizontalBox();

box.add(负责改变年);

box.add(负责改变月);

leftNorth.add(box);

leftPanel.setLayout(new BorderLayout());

leftPanel.add(leftNorth,BorderLayout.NORTH);

leftPanel.add(leftCenter,BorderLayout.CENTER);

leftPanel.add(new Label("请在年份输入框输入所查年份(负数表示公元前),并回车确定"),

BorderLayout.SOUTH) ;

leftPanel.validate();

Container con=getContentPane();

JSplitPane split=new JSplitPane(JSplitPane.HORIZONTAL_SPLIT,

leftPanel,rightPanel);

con.add(split,BorderLayout.CENTER);

con.validate();

hashtable=new Hashtable();

file=new File("日历记事本.txt");

if(!file.exists())

{

try{

FileOutputStream out=new FileOutputStream(file);

ObjectOutputStream objectOut=new ObjectOutputStream(out);

objectOut.writeObject(hashtable);

objectOut.close();

out.close();

}

catch(IOException e)

{

}

}

notepad=new NotePad(this);

rightPanel.add(notepad);

设置日历牌(year,month);

addWindowListener(new WindowAdapter()

{ public void windowClosing(WindowEvent e)

{

System.exit(0);

}

});

setVisible(true);

setBounds(100,50,524,285);

validate();

}

public void 设置日历牌(int year,int month)

{

日历.set(year,month-1,1);

星期几=日历.get(Calendar.DAY_OF_WEEK)-1;

if(month==1||month==2||month==3||month==5||month==7

||month==8||month==10||month==12)

{

排列号码(星期几,31);

}

else if(month==4||month==6||month==9||month==11)

{

排列号码(星期几,30);

}

else if(month==2)

{

if((year%4==0year%100!=0)||(year%400==0))

{

排列号码(星期几,29);

}

else

{

排列号码(星期几,28);

}

}

}

public void 排列号码(int 星期几,int 月天数)

{

for(int i=星期几,n=1;i星期几+月天数;i++)

{

showDay[i].setText(""+n);

if(n==day)

{

showDay[i].setForeground(Color.green);

showDay[i].setFont(new Font("TimesRoman",Font.BOLD,20));

}

else

{

showDay[i].setFont(new Font("TimesRoman",Font.BOLD,12));

showDay[i].setForeground(Color.black);

}

if(i%7==6)

{

showDay[i].setForeground(Color.blue);

}

if(i%7==0)

{

showDay[i].setForeground(Color.red);

}

n++;

}

for(int i=0;i星期几;i++)

{

showDay[i].setText("");

}

for(int i=星期几+月天数;i42;i++)

{

showDay[i].setText("");

}

}

public int getYear()

{

return year;

}

public void setYear(int y)

{

year=y;

notepad.setYear(year);

}

public int getMonth()

{

return month;

}

public void setMonth(int m)

{

month=m;

notepad.setMonth(month);

}

public int getDay()

{

return day;

}

public void setDay(int d)

{

day=d;

notepad.setDay(day);

}

public Hashtable getHashtable()

{

return hashtable;

}

public File getFile()

{

return file;

}

public void mousePressed(MouseEvent e)

{

JTextField source=(JTextField)e.getSource();

try{

day=Integer.parseInt(source.getText());

notepad.setDay(day);

notepad.设置信息条(year,month,day);

notepad.设置文本区(null);

notepad.获取日志内容(year,month,day);

}

catch(Exception ee)

{

}

}

public void mouseClicked(MouseEvent e)

{

}

public void mouseReleased(MouseEvent e)

{

}

public void mouseEntered(MouseEvent e)

{

}

public void mouseExited(MouseEvent e)

{

}

public static void main(String args[])

{

Calendar calendar=Calendar.getInstance();

int 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);

}

}

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

import javax.swing.*;

import java.awt.*;

import java.awt.event.*;

public class Month extends Box implements ActionListener

{

int month;

JTextField showMonth=null;

JButton 下月,上月;

CalendarPad 日历;

public Month(CalendarPad 日历)

{

super(BoxLayout.X_AXIS);

this.日历=日历;

showMonth=new JTextField(2);

month=日历.getMonth();

showMonth.setEditable(false);

showMonth.setForeground(Color.blue);

showMonth.setFont(new Font("TimesRomn",Font.BOLD,16));

下月=new JButton("下月");

上月=new JButton("上月");

add(上月);

add(showMonth);

add(下月);

上月.addActionListener(this);

下月.addActionListener(this);

showMonth.setText(""+month);

}

public void setMonth(int month)

{

if(month=12month=1)

{

this.month=month;

}

else

{

this.month=1;

}

showMonth.setText(""+month);

}

public int getMonth()

{

return month;

}

public void actionPerformed(ActionEvent e)

{

if(e.getSource()==上月)

{

if(month=2)

{

month=month-1;

日历.setMonth(month);

日历.设置日历牌(日历.getYear(),month);

}

else if(month==1)

{

month=12;

日历.setMonth(month);

日历.设置日历牌(日历.getYear(),month);

}

showMonth.setText(""+month);

}

else if(e.getSource()==下月)

{

if(month12)

{

month=month+1;

日历.setMonth(month);

日历.设置日历牌(日历.getYear(),month);

}

else if(month==12)

{

month=1;

日历.setMonth(month);

日历.设置日历牌(日历.getYear(),month);

}

showMonth.setText(""+month);

}

}

}

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

import java.awt.*;

import java.awt.event.*;

import java.util.*;

import javax.swing.*;

import javax.swing.event.*;

import java.io.*;

public class NotePad extends JPanel implements ActionListener

{

JTextArea text;

JButton 保存日志,删除日志;

Hashtable table;

JLabel 信息条;

int year,month,day;

File file;

CalendarPad calendar;

public NotePad(CalendarPad calendar)

{

this.calendar=calendar;

year=calendar.getYear();

month=calendar.getMonth();

day=calendar.getDay();;

table=calendar.getHashtable();

file=calendar.getFile();

信息条=new JLabel(""+year+"年"+month+"月"+day+"日",JLabel.CENTER);

信息条.setFont(new Font("TimesRoman",Font.BOLD,16));

信息条.setForeground(Color.blue);

text=new JTextArea(10,10);

保存日志=new JButton("保存日志") ;

删除日志=new JButton("删除日志") ;

保存日志.addActionListener(this);

删除日志.addActionListener(this);

setLayout(new BorderLayout());

JPanel pSouth=new JPanel();

add(信息条,BorderLayout.NORTH);

pSouth.add(保存日志);

pSouth.add(删除日志);

add(pSouth,BorderLayout.SOUTH);

add(new JScrollPane(text),BorderLayout.CENTER);

}

public void actionPerformed(ActionEvent e)

{

if(e.getSource()==保存日志)

{

保存日志(year,month,day);

}

else if(e.getSource()==删除日志)

{

删除日志(year,month,day);

}

}

public void setYear(int year)

{

this.year=year;

}

public int getYear()

{

return year;

}

public void setMonth(int month)

{

this.month=month;

}

public int getMonth()

{

return month;

}

public void setDay(int day)

{

this.day=day;

}

public int getDay()

{

return day;

}

public void 设置信息条(int year,int month,int day)

{

信息条.setText(""+year+"年"+month+"月"+day+"日");

}

public void 设置文本区(String s)

{

text.setText(s);

}

public void 获取日志内容(int year,int month,int day)

{

String key=""+year+""+month+""+day;

try

{

FileInputStream inOne=new FileInputStream(file);

ObjectInputStream inTwo=new ObjectInputStream(inOne);

table=(Hashtable)inTwo.readObject();

inOne.close();

inTwo.close();

}

catch(Exception ee)

{

}

if(table.containsKey(key))

{

String m=""+year+"年"+month+"月"+day+"这一天有日志记载,想看吗?";

int ok=JOptionPane.showConfirmDialog(this,m,"询问",JOptionPane.YES_NO_OPTION,

JOptionPane.QUESTION_MESSAGE);

if(ok==JOptionPane.YES_OPTION)

{

text.setText((String)table.get(key));

}

else

{

text.setText("");

}

}

else

{

text.setText("无记录");

}

}

public void 保存日志(int year,int month,int day)

{

String 日志内容=text.getText();

String key=""+year+""+month+""+day;

String m=""+year+"年"+month+"月"+day+"保存日志吗?";

int ok=JOptionPane.showConfirmDialog(this,m,"询问",JOptionPane.YES_NO_OPTION,

JOptionPane.QUESTION_MESSAGE);

if(ok==JOptionPane.YES_OPTION)

{

try

{

FileInputStream inOne=new FileInputStream(file);

ObjectInputStream inTwo=new ObjectInputStream(inOne);

table=(Hashtable)inTwo.readObject();

inOne.close();

inTwo.close();

table.put(key,日志内容);

FileOutputStream out=new FileOutputStream(file);

ObjectOutputStream objectOut=new ObjectOutputStream(out);

objectOut.writeObject(table);

objectOut.close();

out.close();

}

catch(Exception ee)

{

}

}

}

public void 删除日志(int year,int month,int day)

{

String key=""+year+""+month+""+day;

if(table.containsKey(key))

{

String m="删除"+year+"年"+month+"月"+day+"日的日志吗?";

int ok=JOptionPane.showConfirmDialog(this,m,"询问",JOptionPane.YES_NO_OPTION,

JOptionPane.QUESTION_MESSAGE);

if(ok==JOptionPane.YES_OPTION)

{

try

{

FileInputStream inOne=new FileInputStream(file);

ObjectInputStream inTwo=new ObjectInputStream(inOne);

table=(Hashtable)inTwo.readObject();

inOne.close();

inTwo.close();

table.remove(key);

FileOutputStream out=new FileOutputStream(file);

ObjectOutputStream objectOut=new ObjectOutputStream(out);

objectOut.writeObject(table);

objectOut.close();

out.close();

text.setText(null);

}

catch(Exception ee)

{

}

}

}

else

{

String m=""+year+"年"+month+"月"+day+"无日志记录";

JOptionPane.showMessageDialog(this,m,"提示",JOptionPane.WARNING_MESSAGE);

}

}

}

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

import javax.swing.*;

import java.awt.*;

import java.awt.event.*;

public class Year extends Box implements ActionListener

{

int year;

JTextField showYear=null;

JButton 明年,去年;

CalendarPad 日历;

public Year(CalendarPad 日历)

{

super(BoxLayout.X_AXIS);

showYear=new JTextField(4);

showYear.setForeground(Color.blue);

showYear.setFont(new Font("TimesRomn",Font.BOLD,14));

this.日历=日历;

year=日历.getYear();

明年=new JButton("下年");

去年=new JButton("上年");

add(去年);

add(showYear);

add(明年);

showYear.addActionListener(this);

去年.addActionListener(this);

明年.addActionListener(this);

}

public void setYear(int year)

{

this.year=year;

showYear.setText(""+year);

}

public int getYear()

{

return year;

}

public void actionPerformed(ActionEvent e)

{

if(e.getSource()==去年)

{

year=year-1;

showYear.setText(""+year);

日历.setYear(year);

日历.设置日历牌(year,日历.getMonth());

}

else if(e.getSource()==明年)

{

year=year+1;

showYear.setText(""+year);

日历.setYear(year);

日历.设置日历牌(year,日历.getMonth());

}

else if(e.getSource()==showYear)

{

try

{

year=Integer.parseInt(showYear.getText());

showYear.setText(""+year);

日历.setYear(year);

日历.设置日历牌(year,日历.getMonth());

}

catch(NumberFormatException ee)

{

showYear.setText(""+year);

日历.setYear(year);

日历.设置日历牌(year,日历.getMonth());

}

}

}

}

希望能帮到你，以上分为4个类。。分割线以标注了