java用代码写日历 java编写一个日历记事本

Java编写程序，输入年份，输出本年度各月份日历

写了个简明的，

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import java.util.Calendar;

import java.util.Scanner;

public class Test {

static public void main(String 参数[]){

Calendar c = Calendar.getInstance();

Scanner sc = new Scanner(System.in);

System.out.println("请输入年份：");

int year= sc.nextInt();

c.set(Calendar.YEAR, year);

c.set(Calendar.MONTH, Calendar.JANUARY);

c.set(Calendar.DAY_OF_MONTH, 1);

while(c.get(Calendar.YEAR)==year){

int wday=c.get(Calendar.DAY_OF_WEEK);

int mday=c.get(Calendar.DAY_OF_MONTH);

if(mday==1){

System.out.println("\n日\t一\t二\t三\t四\t五\t六\t第"+(c.get(Calendar.MONTH)+1)+"月");

System.out.println("---------------------------------------------------");

for(int i=0;iwday-1;i++) System.out.print(" \t");

}

System.out.print(mday+"\t");

if(wday==7) System.out.println();

c.add(Calendar.DAY_OF_YEAR, 1);

}

}

}

=======

请输入年份：

2012

日 一 二 三 四 五 六 第1月

---------------------------------------------------

1 2 3 4 5 6 7

8 9 10 11 12 13 14

15 16 17 18 19 20 21

22 23 24 25 26 27 28

29 30 31

日 一 二 三 四 五 六 第2月

---------------------------------------------------

1 2 3 4

5 6 7 8 9 10 11

12 13 14 15 16 17 18

19 20 21 22 23 24 25

26 27 28 29

日 一 二 三 四 五 六 第3月

---------------------------------------------------

1 2 3

4 5 6 7 8 9 10

11 12 13 14 15 16 17

18 19 20 21 22 23 24

25 26 27 28 29 30 31

日 一 二 三 四 五 六 第4月

---------------------------------------------------

1 2 3 4 5 6 7

8 9 10 11 12 13 14

15 16 17 18 19 20 21

22 23 24 25 26 27 28

29 30

日 一 二 三 四 五 六 第5月

---------------------------------------------------

1 2 3 4 5

6 7 8 9 10 11 12

13 14 15 16 17 18 19

20 21 22 23 24 25 26

27 28 29 30 31

日 一 二 三 四 五 六 第6月

---------------------------------------------------

1 2

3 4 5 6 7 8 9

10 11 12 13 14 15 16

17 18 19 20 21 22 23

24 25 26 27 28 29 30

日 一 二 三 四 五 六 第7月

---------------------------------------------------

1 2 3 4 5 6 7

8 9 10 11 12 13 14

15 16 17 18 19 20 21

22 23 24 25 26 27 28

29 30 31

日 一 二 三 四 五 六 第8月

---------------------------------------------------

1 2 3 4

5 6 7 8 9 10 11

12 13 14 15 16 17 18

19 20 21 22 23 24 25

26 27 28 29 30 31

日 一 二 三 四 五 六 第9月

---------------------------------------------------

1

2 3 4 5 6 7 8

9 10 11 12 13 14 15

16 17 18 19 20 21 22

23 24 25 26 27 28 29

30

日 一 二 三 四 五 六 第10月

---------------------------------------------------

1 2 3 4 5 6

7 8 9 10 11 12 13

14 15 16 17 18 19 20

21 22 23 24 25 26 27

28 29 30 31

日 一 二 三 四 五 六 第11月

---------------------------------------------------

1 2 3

4 5 6 7 8 9 10

11 12 13 14 15 16 17

18 19 20 21 22 23 24

25 26 27 28 29 30

日 一 二 三 四 五 六 第12月

---------------------------------------------------

1

2 3 4 5 6 7 8

9 10 11 12 13 14 15

16 17 18 19 20 21 22

23 24 25 26 27 28 29

30 31

如何用JAVA写日历？

按照你的要求编写的Java日历验证程序如下

UI.java

import java.util.Scanner;

public class UI {

static Scanner sc=new Scanner(System.in);

public static int askInt(String s){

System.out.print(s);

return sc.nextInt();

}

public static void println(String s){

System.out.println(s);

}

}

EE.java

public class EE {

public void validateDateCore(){

int year =UI.askInt("Enter the year: ");

int month=UI.askInt("Enter the month: ");

int day=UI.askInt("Enter the day: ");

if(year  1){

UI.println("The year is not a valid number.");

return;

}

if(month1 || month12){

UI.println("The month is not a valid number.");

return;

}

int monthDay=0;

switch(month){

case 1:

case 3:

case 5:

case 7:

case 8:

case 10:

case 12:monthDay=31;break;

case 4:

case 6:

case 9:

case 11:monthDay=30;break;

case 2:

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

monthDay=29;

}else{

monthDay=28;

}

break;

}

if(day1 || daymonthDay){

UI.println("The day is not a valid number.");

return;

}else{

UI.println("It is "+day+"/"+month+"/"+year+".");

}

}

public static void main(String[] args) {

new EE().validateDateCore();

}

}

运行结果

编写 万年历java代码例如1900年一月一日是星期一。

import java.util.Calendar;

import java.util.Date;

import java.util.Scanner;

public class MyCalendar

{

public static void main(String[] args)

{

Scanner scanner = new Scanner(System.in);

String reg = "^(\\d+)[^\\d]+((0?[1-9])|(1[012]))$";

while(true)

{

System.out.println("输入年月(年和月用非数字隔开:如2015.1)(什么都不输入直接退出)");

String line = scanner.nextLine().trim();

if("".equals(line))

{

scanner.close();

break;

}

if(!line.matches(reg))

{

continue;

}

int year = Integer.parseInt(line.replaceAll(reg, "$1"));

int month = Integer.parseInt(line.replaceAll(reg, "$2"));

System.out.println("日\t一\t二\t三\t四\t五\t六");

Calendar calendar = Calendar.getInstance();

// 这个月的1号是星期几

calendar.set(year, month - 1, 1);

int day = calendar.get(Calendar.DAY_OF_WEEK);

int start = Calendar.SUNDAY;

calendar.add(Calendar.DATE, -day + start);

while(start  day)

{

System.out.print(calendar.get(Calendar.DATE) + "\t");

calendar.add(Calendar.DATE, 1);

start++;

}

calendar.set(year, month - 1, 1);

Date now = calendar.getTime();

calendar.set(year, month, 1);

Date next = calendar.getTime();

for(Date cur = now; cur.before(next);)

{

calendar.setTime(cur);

int x = calendar.get(Calendar.DATE);

String tmp = x  10 ? "0" + x : x + "";

System.out.print(tmp + "\t");

if(calendar.get(Calendar.DAY_OF_WEEK) == Calendar.SATURDAY)

{

System.out.println();

}

calendar.add(Calendar.DATE, 1);

cur = calendar.getTime();

}

calendar.add(Calendar.DATE, -1);

int to = calendar.get(Calendar.DAY_OF_WEEK);

int end = Calendar.SATURDAY;

while(to  end)

{

calendar.add(Calendar.DATE, 1);

int x = calendar.get(Calendar.DATE);

String tmp = x  10 ? "0" + x : x + "";

System.out.print(tmp + "\t");

to++;

}

System.out.println();

}

}

}

编写JAVA程序实现一个简单的日历（高分求高手）（追加分）

import java.awt.*;

import java.awt.event.*;

import java.util.*;

import javax.swing.*;

import javax.swing.event.*;

import javax.swing.table.*;

public class MyCalendar extends JApplet {

public static final String WEEK_SUN = "SUN";

public static final String WEEK_MON = "MON";

public static final String WEEK_TUE = "TUE";

public static final String WEEK_WED = "WED";

public static final String WEEK_THU = "THU";

public static final String WEEK_FRI = "FRI";

public static final String WEEK_SAT = "SAT";

public static final Color background = Color.white;

public static final Color foreground = Color.black;

public static final Color headerBackground = Color.blue;

public static final Color headerForeground = Color.white;

public static final Color selectedBackground = Color.blue;

public static final Color selectedForeground = Color.white;

private JPanel cPane;

private JLabel yearsLabel;

private JSpinner yearsSpinner;

private JLabel monthsLabel;

private JComboBox monthsComboBox;

private JTable daysTable;

private AbstractTableModel daysModel;

private Calendar calendar;

public MyCalendar() {

cPane = (JPanel) getContentPane();

}

public void init() {

cPane.setLayout(new BorderLayout());

calendar = Calendar.getInstance();

calendar = Calendar.getInstance();

yearsLabel = new JLabel("Year: ");

yearsSpinner = new JSpinner();

yearsSpinner.setEditor(new JSpinner.NumberEditor(yearsSpinner, "0000"));

yearsSpinner.setValue(new Integer(calendar.get(Calendar.YEAR)));

yearsSpinner.addChangeListener(new ChangeListener() {

public void stateChanged(ChangeEvent changeEvent) {

int day = calendar.get(Calendar.DAY_OF_MONTH);

calendar.set(Calendar.DAY_OF_MONTH, 1);

calendar.set(Calendar.YEAR, ((Integer) yearsSpinner.getValue()).intValue());

int maxDay = calendar.getActualMaximum(Calendar.DAY_OF_MONTH);

calendar.set(Calendar.DAY_OF_MONTH, day maxDay ? maxDay : day);

updateView();

}

});

JPanel yearMonthPanel = new JPanel();

cPane.add(yearMonthPanel, BorderLayout.NORTH);

yearMonthPanel.setLayout(new BorderLayout());

yearMonthPanel.add(new JPanel(), BorderLayout.CENTER);

JPanel yearPanel = new JPanel();

yearMonthPanel.add(yearPanel, BorderLayout.WEST);

yearPanel.setLayout(new BorderLayout());

yearPanel.add(yearsLabel, BorderLayout.WEST);

yearPanel.add(yearsSpinner, BorderLayout.CENTER);

monthsLabel = new JLabel("Month: ");

monthsComboBox = new JComboBox();

for (int i = 1; i = 12; i++) {

monthsComboBox.addItem(new Integer(i));

}

monthsComboBox.setSelectedIndex(calendar.get(Calendar.MONTH));

monthsComboBox.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent actionEvent) {

int day = calendar.get(Calendar.DAY_OF_MONTH);

calendar.set(Calendar.DAY_OF_MONTH, 1);

calendar.set(Calendar.MONTH, monthsComboBox.getSelectedIndex());

int maxDay = calendar.getActualMaximum(Calendar.DAY_OF_MONTH);

calendar.set(Calendar.DAY_OF_MONTH, day maxDay ? maxDay : day);

updateView();

}

});

JPanel monthPanel = new JPanel();

yearMonthPanel.add(monthPanel, BorderLayout.EAST);

monthPanel.setLayout(new BorderLayout());

monthPanel.add(monthsLabel, BorderLayout.WEST);

monthPanel.add(monthsComboBox, BorderLayout.CENTER);

daysModel = new AbstractTableModel() {

public int getRowCount() {

return 7;

}

public int getColumnCount() {

return 7;

}

public Object getValueAt(int row, int column) {

if (row == 0) {

return getHeader(column);

}

row--;

Calendar calendar = (Calendar) MyCalendar.this.calendar.clone();

calendar.set(Calendar.DAY_OF_MONTH, 1);

int dayCount = calendar.getActualMaximum(Calendar.DAY_OF_MONTH);

int moreDayCount = calendar.get(Calendar.DAY_OF_WEEK) - 1;

int index = row * 7 + column;

int dayIndex = index - moreDayCount + 1;

if (index moreDayCount || dayIndex dayCount) {

return null;

} else {

return new Integer(dayIndex);

}

}

};

daysTable = new CalendarTable(daysModel, calendar);

daysTable.setCellSelectionEnabled(true);

daysTable.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);

daysTable.setDefaultRenderer(daysTable.getColumnClass(0), new TableCellRenderer() {

public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected,

boolean hasFocus, int row, int column) {

String text = (value == null) ? "" : value.toString();

JLabel cell = new JLabel(text);

cell.setOpaque(true);

if (row == 0) {

cell.setForeground(headerForeground);

cell.setBackground(headerBackground);

} else {

if (isSelected) {

cell.setForeground(selectedForeground);

cell.setBackground(selectedBackground);

} else {

cell.setForeground(foreground);

cell.setBackground(background);

}

}

return cell;

}

});

updateView();

cPane.add(daysTable, BorderLayout.CENTER);

}

public static String getHeader(int index) {

switch (index) {

case 0:

return WEEK_SUN;

case 1:

return WEEK_MON;

case 2:

return WEEK_TUE;

case 3:

return WEEK_WED;

case 4:

return WEEK_THU;

case 5:

return WEEK_FRI;

case 6:

return WEEK_SAT;

default:

return null;

}

}

public void updateView() {

daysModel.fireTableDataChanged();

daysTable.setRowSelectionInterval(calendar.get(Calendar.WEEK_OF_MONTH),

calendar.get(Calendar.WEEK_OF_MONTH));

daysTable.setColumnSelectionInterval(calendar.get(Calendar.DAY_OF_WEEK) - 1,

calendar.get(Calendar.DAY_OF_WEEK) - 1);

}

public static class CalendarTable extends JTable {

private Calendar calendar;

public CalendarTable(TableModel model, Calendar calendar) {

super(model);

this.calendar = calendar;

}

public void changeSelection(int row, int column, boolean toggle, boolean extend) {

super.changeSelection(row, column, toggle, extend);

if (row == 0) {

return;

}

Object obj = getValueAt(row, column);

if (obj != null) {

calendar.set(Calendar.DAY_OF_MONTH, ((Integer)obj).intValue());

}

}

}

public static void main(String[] args) {

JFrame frame = new JFrame("Calendar Application");

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

MyCalendar myCalendar = new MyCalendar();

myCalendar.init();

frame.getContentPane().add(myCalendar);

frame.setSize(240, 172);

frame.show();

}

}