import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.*;
import java.text.*;
import java.io.*;
public class Note extends Frame {
private MenuBar mb;
private Menu mset_param ,mhelp;
private MenuItem mibc ,miSound;
private MenuItem miabout;
//缺省的背景顏色
private static Color backgroundcolor = Color.GRAY;
//funtction of the button on plcb is chose year andmonth
//and set alarm colock and remind booking
private JCheckBox remindBook ,alarmColock;
private JComboBox cbyears ,cbmonths;
private JPanel plcb;
//日歷按鈕
private JPanel plbt;
private JButton button[];
//add vector to contain button[],so that find it
private Vector v;
//save the year and month
private String choseyear ,chosemonth;
private int choseyearint ,chosemonthint;
private boolean changed = false;
private boolean fileExist = false;//the application first run to find file
private static boolean needSound;
//add text to write down what to do in the future
private TextArea tanote;
private JPanel plta;
//默認的年份
private final static String years[]={
"1995" ,"1996" ,"1997" ,"1998" ,"1999" ,"2000" ,
"2001" ,"2002" ,"2003" ,"2004" ,"2005" ,"2006" ,
"2007" ,"2008" ,"2009" ,"2010" ,"2011" ,"2012" ,
"2013" ,"2014" ,"2015" ,"2016" ,"2017" ,"2018" ,
"2019" ,"2020"
};
private static final String months[] = {
"January" ,"February" ,"March" ,"April" ,"May" ,"June" ,"July" ,"August" ,
"September" ,"October" ,"November" ,"December"
};
private final static int dom[] = {
31 ,28 ,31 ,30 ,31 ,30 ,31 ,31 ,30 ,31 ,30 ,31
};
//save the first day of the month to use
private int start;
//save the button who is entered
private int btnIndex;
public Note() {
mb = new MenuBar();
mset_param = new Menu("設置");
mhelp = new Menu("幫助");
mibc = new MenuItem("背景");
miSound = new MenuItem("聲音");
miabout = new MenuItem("關于...");
mset_param.add(mibc);
mset_param.addSeparator();
mset_param.add(miSound);
mhelp.add(miabout);
setMenuBar(mb);
mb.add(mset_param);
mb.setHelpMenu(mhelp);
MListener ml = new MListener();
mibc.addActionListener(ml);
miabout.addActionListener(ml);
miSound.addActionListener(ml);
cbyears = new JComboBox();
cbmonths = new JComboBox();
plcb = new JPanel();
plcb.setLayout(new FlowLayout());
JLabel lyears = new JLabel("年份:");
JLabel lmonths = new JLabel("月份:");
plcb.add(lyears);
plcb.add(cbyears);
plcb.add(lmonths);
plcb.add(cbmonths);
remindBook = new JCheckBox("預約提示",true);
alarmColock = new JCheckBox("鬧鐘");
// Dimension d = new Dimension();
// remindBook.setSize(d);
// remindBook.getSize(d);
// System.out.println("W:"+d.getWidth()+" H:"+d.getHeight());
plcb.add(remindBook);
plcb.add(alarmColock);
remindBook.addActionListener(new RemindListener());
alarmColock.addActionListener(new RemindListener());
add(plcb ,BorderLayout.NORTH);
//add calendar
getCalendar();
plbt = new JPanel();
plbt.setBackground(Color.BLUE);
plbt.setLayout(new GridLayout(7 ,7));
plbt.add(new JLabel(" 星期日"));
plbt.add(new JLabel(" 星期一"));
plbt.add(new JLabel(" 星期二"));
plbt.add(new JLabel(" 星期三"));
plbt.add(new JLabel(" 星期四"));
plbt.add(new JLabel(" 星期五"));
plbt.add(new JLabel(" 星期六"));
//add calendar button to frame
//add button to vector;
v = new Vector();
button = new JButton[42];
for(int i=0;i<41;i++){
button[i] = new JButton();
plbt.add(button[i]);
button[i].addActionListener(new ButtonListener());
v.add(button[i]);
}
button[41] = new JButton();
plbt.add(button[41]);
button[41].setText("保存");
button[41].addActionListener(new SaveListener());
add(plbt ,BorderLayout.CENTER);
//add note book
// plta = new JPanel();
tanote = new TextArea(5 ,80);
// tanote.addTextListener(new tanoteTextListener());
// tanote.setColumns(80);
// plta.add(tanote);
// tanote.SCROLLBARS_VERTICAL_ONLY;
add(tanote ,BorderLayout.SOUTH);
/*
//add date to button
GregorianCalendar calendar = new GregorianCalendar(choseyearint ,chosemonthint ,1);
int start = calendar.get(Calendar.DAY_OF_WEEK)-1;
int daysInMonth = dom[chosemonthint];
if(calendar.isLeapYear(choseyearint)&&chosemonthint == 1){
++daysInMonth;
}
for(int i =0;i<daysInMonth;i++){
button[start+i].setText(" "+(i+1)+" ");
}
*/
//add the default year and month to JComboBox
for(int i= 0;i<=25;i++){
cbyears.addItem(years[i]);
}
for(int i=0;i<12;i++){
cbmonths.addItem(months[i]);
}
/*
//add current year and month
cbyears.setSelectedIndex(choseyearint-1995);
cbmonths.setSelectedIndex(chosemonthint);
*/
//show date to calendar
showDate();
//open file add to note
Calendar now = new GregorianCalendar();
int num = start + now.get(Calendar.DAY_OF_MONTH)-1;
btnIndex = num;
readFile(num);
fileSound();
//add threadcb to listen jcombobox state
new ThreadCB().start();
//listen the JComboBox of years and months
cbyears.addItemListener(new cbyearsItemListener());
cbmonths.addItemListener(new cbmonthsItemListener());
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
dispose();
System.exit(0);
}
});
}
/**
*add menu listener to know the menu what do want to do
*/
class MListener implements ActionListener{
public void actionPerformed(ActionEvent e){
MenuItem i = (MenuItem)e.getSource();
if(i.equals(miabout)){
JOptionPane.showMessageDialog(null ,"日歷記事本程序V1.0","關于..." ,JOptionPane.INFORMATION_MESSAGE);
}
else if(i.equals(mibc)){
//backgroundcolor = Color.BLACK;
backgroundcolor = JColorChooser.showDialog(null ,"選擇顏色..." ,getBackground());
setBackground(backgroundcolor);
plbt.setBackground(backgroundcolor);
// System.out.println(choseyear);
////
}
else{
JOptionPane.showMessageDialog(null ,"I am sorry ,this function is not complation" ,"Sorry" ,JOptionPane.INFORMATION_MESSAGE);
}
}
}
/**
*add the year JComboBox listener to know what active
*/
class cbyearsItemListener implements ItemListener{
public void itemStateChanged(ItemEvent e){
// System.out.println(e.paramString());
// System.out.println(e.getStateChange());
// System.out.println(e.getItem().toString());
// if(e.getSource().equals("1997")){
// System.out.println("1997 is chosed");
// }
// else{
// System.out.println("the System is not chose 1997");
// }
// choseyear = e.getItem().toString();
changed = true;
// showDate();
// cbmonths.setSelectedIndex(5);
}
}
/**
*add the month JComboBox listener to know what active
*/
class cbmonthsItemListener implements ItemListener{
public void itemStateChanged(ItemEvent e){
// System.out.println(choseyear);
// chosemonth = e.getItem().toString();
changed = true;
// chosemonthint = Integer.parseInt(chosemonth);
// System.out.println(chosemonthint);
// showDate();
}
}
public static void main(String args[]) {
System.out.println("Starting Note...");
Note mainFrame = new Note();
mainFrame.setSize(600, 400);
mainFrame.setTitle("日歷記事本");
mainFrame.setBackground(backgroundcolor);
mainFrame.setVisible(true);
for(int i=0;i<10;i++){
System.out.print("\007");
}
// Thread dd = new ThreadCB();
// dd.start();
// mainFrame.paintCalendar();
}
protected void getCalendar(){
Calendar now = new GregorianCalendar();
// System.out.println("year :"+now.get(Calendar.YEAR));
// System.out.println("month:"+now.get(Calendar.MONTH));
// int y = now.get(Calendar.YEAR);
// choseyear = Integer.toString(y);
// int m = now.get(Calendar.MONTH);
// chosemonth = Integer.toString(m+1);
choseyearint = now.get(Calendar.YEAR);
chosemonthint = now.get(Calendar.MONTH);
// System.out.println("y "+choseyear+"::"+chosemonth);
}
/**
*show date to calendar
*/
protected void showDate(){
GregorianCalendar calendar = new GregorianCalendar(choseyearint ,chosemonthint ,1);
start = calendar.get(Calendar.DAY_OF_WEEK)-1;
int daysInMonth = dom[chosemonthint];
if(calendar.isLeapYear(choseyearint)&&chosemonthint == 1){
++daysInMonth;
}
for(int i =0;i<daysInMonth;i++){
button[start+i].setForeground(Color.BLACK);
button[start+i].setText(" "+(i+1)+" ");
}
//set current day
int nowDay = start + calendar.get(Calendar.DAY_OF_MONTH);
button[nowDay+1].setForeground(Color.RED);
//add current year and month
cbyears.setSelectedIndex(choseyearint-1995);
cbmonths.setSelectedIndex(chosemonthint);
}
//listen the buttons active
class ButtonListener implements ActionListener{
public void actionPerformed(ActionEvent e){
Object obj = e.getSource();
// System.out.println("haha"+e.getSource());
btnIndex = v.indexOf(obj);
readFile(btnIndex);
/* switch(v.indexOf(obj)){
case 1:
System.out.println("i am button1");
break;
case 2:
// System.out.println("I am button2");
readFile(2);
break;
case 41:
System.out.println(tanote.getText());
break;
default:
System.out.println("I do not know who am I");
break;
}
*/ }
}
/**
*create a thread to listen the year or month′s state
*/
class ThreadCB extends Thread{
public void run(){
while(true){
if(changed){
changed = false;
choseyearint = cbyears.getSelectedIndex()+1995;
chosemonthint = cbmonths.getSelectedIndex();
//System.out.println("y:"+choseyearint+":M:"+chosemonthint);
for(int i=0;i<40;i++){
button[i].setText("");
}
showDate();
}
try{
sleep(200);
}
catch(InterruptedException e){
System.err.println(e);
}
}
}
}
/**
* add note book listener to know the textarea active
*/
/*
class tanoteTextListener implements TextListener{
public void textValueChanged(TextEvent e){
//System.out.println(e.getSource());
}
}*/
/**
*check file to know the file is exist
* if exist,read it to the note book
*/
protected void readFile(int bt){
int y = cbyears.getSelectedIndex()+1995;//real year
int m = cbmonths.getSelectedIndex()+1;//real month
String fileName = Integer.toString(y) + Integer.toString(m)+"button"+Integer.toString(bt);
// System.out.println("I am dudu");
// System.out.println(fileName);
// String fileName = "testDay.java";
File file = new File(fileName);
BufferedReader is;
String line;
StringBuffer sb = new StringBuffer();
tanote.setText("");
if(file.exists()){
try{
is = new BufferedReader(new FileReader(fileName));
while((line = is.readLine())!= null){
sb.append(line);
sb.append("\n");
}
is.close();
}
catch(IOException e){
System.err.println(e);
System.exit(0);
}
tanote.setText(sb.toString());
fileExist = true;
}
else{
System.out.println(fileName+" is not exists");
}
}
/**
*sound
*/
protected void fileSound(){
if(remindBook.isSelected()){
if(fileExist){
/* for(int i=0;i<10;i++){
System.out.println("\007");
}
*/
needSound = true;
}
}
}
/**
*listen the save button active
*/
class SaveListener implements ActionListener{
public void actionPerformed(ActionEvent e){
int bt = btnIndex;
int y = cbyears.getSelectedIndex()+1995;//real year
int m = cbmonths.getSelectedIndex()+1;//real month
String fileName = Integer.toString(y) + Integer.toString(m)+"button"+Integer.toString(bt);
try{
BufferedWriter bw = new BufferedWriter(new FileWriter(fileName));
//int row = tanote.getRows();
//System.out.println("rows:"+row);
String s = tanote.getText();
System.out.println("length:"+s.length());
bw.write(s);
bw.close();
}
catch(IOException ev){
System.err.println(ev);
System.exit(0);
}
}
}
//
class RemindListener implements ActionListener{
public void actionPerformed(ActionEvent ae){
Object obj = ae.getSource();
if(obj.equals(remindBook)){
if(remindBook.isSelected()){
System.out.println("I am selected");
}
else{
System.out.println("I am not selected");
}
}
else{
if(alarmColock.isSelected()){
// System.out.println("I am selected");
final JFrame jf = new JFrame("設置時間");
jf.setSize(300,100);
jf.setLocation(200 ,200);
jf.setVisible(true);
// Font f = new Font( ,Font.BOLD ,20);
JLabel jl = new JLabel("逗你玩");
String name=jl.getFont().getName();
// System.out.println("Font:"+name);//name′s value is Dialog
Font f = new Font(name ,Font.BOLD+Font.ITALIC ,20);
jl.setForeground(Color.red);
jl.setFont(f);
jf.getContentPane().setLayout(new GridLayout(5 ,2));
jf.getContentPane().add(new JLabel(" "));
jf.getContentPane().add(jl);
jf.getContentPane().add(new JLabel("sorry! this function is not do!!"));
jf.pack();
jf.addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent we){
jf.dispose();
}
});
}
else{
System.out.println("I am not selected");
}
}
}
}
}
為什么代碼很重要
盡管JAVA是用來寫程序而不是散文， 但它仍然被用來表達思想和觀點的。而且，在調查中顯示，那些思想和觀點在實際中完成了很多事情。為編寫出好的JAVA風格而擔憂，似乎是在浪費時間， 但實際上它對我們編寫程序是很適宜的，因為它所要表達的思想和觀點是格外清晰的。
這里提供一些理由，為什么要使用好的JAVA代碼規范
一個軟件產品的80%的生命期是在維護（maintenance）。
幾乎沒有一個軟件在它的整個生命期里都是被它的作者來維護的。
使用好的風格提高了軟件的可維護性。
如果源代碼和軟件產品是捆綁給客戶的，作為產品的剩余部分，它應該有好的分包（well-packaged），足夠清晰和專業的代碼。
使用好的風格編寫代碼有以下幾點好處：
提高了代碼的可讀性，持續性，和諧性。這些都能使代碼能更容易的理解和維護。
使代碼更容易被跟蹤和調試，因為它是清晰的和持續的。
使你或另一個程序員在編寫終止時更容易再繼續下去，尤其在一個很長的時間后。
增加了代碼預排（walkthroughs）的好處， 因為能讓參入者更多的將焦點集中在代碼正在做什么。
概要方針
使用好的JAVA風格并不困難， 但是它確實需要注意細節。下面是一些常用的概要指導方針：
使代碼更清晰和更容易讀
使代碼更持續
使用顯而易見的標識符名
邏輯地組織你的文件和類
每個文件只有一個類(這里不包括一些內部類)
使用80-90個字符的最大行寬
明智的使用空格來and/or其他分隔符
縮排上，使用空格（Space）來代替Tab
Tabs vs. 空格
在編寫代碼時，“Tabs vs. 空格” 是一個嚴謹的觀點。這里我并不是暗示只有一個正確的方法。我支持使用空格，因為它能保證我的代碼在你的編輯器里和我的編輯器里看到的相同，反之矣然。如果你感覺使用空格來代替Tab"不是正確的", 那么就使用Tab吧。
括號和縮進
在編寫代碼時，縮進風格(cf., Raymond, "Indent Style")，或者放置括號("{" 和 "}") 和一些相關聯的縮進代碼，是另一個嚴謹的觀點。象JAVA一樣，有許多C風格的語言存在。我這里也不是暗示它們中哪一個更優先更好。在大多數本文的范例代碼中，我使用了K&R 風格，如果你不喜歡K&R風格，那么就使用其他風格吧。
注釋
在JAVA代碼中你可以使用兩種注釋： Javadoc 注釋 (也稱為文檔注釋) 和執行注釋。 Javadoc注釋能夠被javadoc工具解壓來制造一個API文檔。執行注釋是那些解釋代碼目的和方式的注釋。在注釋你的JAVA代碼時請使用以下方針：
盡可能的使用Javadoc注釋(在類和方法上，使之能最小化).
多使用塊注釋，少使用//注釋, 除非一些特殊的情況，如變量聲明
要記住：好注釋是有幫助的，壞注釋是麻煩的。
Example 1. Bad Comment Style
// applyRotAscii() -- Apply ASCII ROT
private void applyRotAscii(){
try{
int rotLength = Integer.parseInt(rotationLengthField.getText().trim()); // get rot len
RotAscii cipher = new RotAscii(rotLength); // new cipher
textArea.setText(cipher.transform(textArea.getText())); // transform
}catch(Exception ex){
/* Show exception */
ExceptionDialog.show(this, "Invalid rotation length: ", ex); }
}
Example 2. Good Comment Style
/**
* Apply the ASCII rotation cipher to the user's text. The length is retrieved
* from the rotation length field, and the user's text is retrieved from the
* text area.
*
* @author Thornton Rose
*/
private void applyRotAscii() {
int rotLength = 0; // rotation length
RotAscii cipher = null; // ASCII rotation cipher
try {
// Get rotation length field and convert to integer.
rotLength = Integer.parseInt(rotationLengthField.getText().trim());
// Create ASCII rotation cipher and transform the user's text with it.
cipher = new RotAscii(rotLength);
textArea.setText(cipher.transform(textArea.getText()));
} catch(Exception ex) {
// Report the exception to the user.
ExceptionDialog.show(this, "Invalid rotation length: ", ex);
}
}
塊和語句
使用下面的方針來編寫塊和語句：
一行只寫一個語句
控制語句總是使用{}這樣的括號 (e.g., 'if').
考慮在塊的末尾使用一個注釋 (e.g., } // end if), 尤其是長的或嵌套塊
在塊的開頭放置變量的聲明語句
總記得初始化變量
如果你是個完美主義者，左對齊變量名
在switch塊里縮進case從句
在操作符后留有空白
在if, for, 或while語句中， 在括號“（”前留有空白
在表達式中使用空白和插入語來增強可讀性
在for循環中的變量是個例外。 循環變量可能會在語句初始化部分被定義。 e.g., for (int i = 0; ...)
.
在塊的末尾插入注釋有助于你無意中跟蹤到被刪除的結尾括號“}”.
Example 3. Bad Block Style.
try{
for(int i=0;i<5;i++){
...
}
int threshold=calculateThreshold();
float variance=(threshold*2.8)-1;
int c=0;
if (threshold<=15) c=calculateCoefficient();
switch(c){
case 1: setCeiling(c*2); break;
case 2: setCeiling(c*3); break;
else: freakOut();
}
}catch(Exception ex){ ... }
Example 4. Good Block Style.
try {
int threshold = 0;
float variance = 0.0;
int coefficient = 0;
// Prepare 5 cycles.
for (int i = 0; i < 5; i ++){
prepareCycle(i);
}
// Calculate the threshold and variance.
threshold = calculateThreshold();
variance = (threshold * 2.8) - 1;
// If the threshold is less than the maximum, calculate the coefficient.
// Otherwise, throw an exception.
if (threshold <= MAX_THRESHOLD) {
coefficient = calculateCoefficient();
} else {
throw new RuntimeException("Threshold exceeded!");
}
// Set the ceiling based on the coefficient.
switch (coefficient) {
case 1:
setCeiling(coefficient * 2);
break;
case 2:
setCeiling(coefficient * 3);
break;
else:
freakOut();
} // end switch
} catch(Exception ex) {
...
} // end try