「打印日历java」打印日历表
今天给各位分享打印日历java的知识，其中也会对打印日历表进行解释，如果能碰巧解决你现在面临的问题，别忘了关注本站，现在开始吧！
本文目录一览：
- 1、输入年份月份，打印输出当月日历 用java
- 2、用JAVA打印日历表！求高手指导！
- 3、Java日历打印，怎么加输入年份，打印整年12个月打印，输入月份打印季节，下面代码如何优化，给个思路？
- 4、Java 打印两个月的日历
- 5、java中如何读取文件中内容，并打印日历
输入年份月份，打印输出当月日历 用java
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
public class java {
public static void main(String[] args) throws IOException {
BufferedReader buf=new BufferedReader(new InputStreamReader(System.in));
System.out.println("请输入年份：");
String s1=buf.readLine();
System.out.println("请输入月份： ");
String s2=buf.readLine();
int year=Integer.parseInt(s1);
int month=Integer.parseInt(s2);
switch(month)
{
case 1:
case 3:
case 5:
case 7:
case 8:
case 10:
case 13:
System.out.println("在"+year+"年的"+month+"月有：31天");
break;
case 4:
case 6:
case 9:
case 11:
System.out.println("在"+year+"年的"+month+"月有：30天");
break;
case 2:
if(year%4==0year%100!=0||year%400==0)
{
System.out.println("在"+year+"年的"+month+"月有：29天");
}
else
{
System.out.println("在"+year+"年的"+month+"月有：28天");
}
break;
}
}
}
用JAVA打印日历表！求高手指导！
//加分吧，测试通过的。
package test;
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();
}
}
Java日历打印，怎么加输入年份，打印整年12个月打印，输入月份打印季节，下面代码如何优化，给个思路？
建议封装函数，使用数组完成所有的打印
比如获取天数，getDays(int year,int month)
获取星期，getDay(int allDays)
获取极度,getQuater(int month)
然后打印重载写print方法，传入的flag不同打印年 嫉妒等
Java 打印两个月的日历
水平排列有点蛋疼，不过还是想到办法搞定了，希望你运行的时候排列不会有问题。请接招：
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.List;
import java.util.Scanner;
public class CalendarOutput {
private static Calendar cal1, cal2;
private static final String[] DAY_OF_WEEK = {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
private static DateFormat df = new SimpleDateFormat("yyyy年MM月");
private static DateFormat parseDf = new SimpleDateFormat("yyyyMM");
private static Scanner sc;
public static void main(String[] args) {
cal1 = Calendar.getInstance();
cal1.set(Calendar.DATE, 1);
cal1.setFirstDayOfWeek(Calendar.SUNDAY);
cal2 = Calendar.getInstance();
cal2.set(Calendar.DATE, 1);
sc = new Scanner(System.in);
System.out.println("请输入年月（如201411）：");
Date d = null;
while(null == d) {
try {
String line = sc.nextLine();
d = parseDf.parse(line);
} catch (ParseException e) {
System.out.println("日期格式不正确，请重新输入！");
d = null;
}
}
cal1.setTime(d);
cal2.set(Calendar.YEAR, cal1.get(Calendar.YEAR));
cal2.set(Calendar.MONTH, cal1.get(Calendar.MONTH));
cal2.add(Calendar.MONTH, 1);
printCal();
}
private static void printCal() {
// 先在最顶部显示年份
System.out.println(String.format("\t%s\t\t\t%s",
df.format(cal1.getTime()), df.format(cal2.getTime())));
printWeek(); // 然后输出星期日到星期一
// 先将两个月的日期保存到两个数组中
String[][] month1 = putMonth(cal1);
String[][] month2 = putMonth(cal2);
// 再将数组中的文字取出来并显示
for(int i = 0; i month1.length; i ++) {
String[] month = month1[i];
// 逐周输出日期
for(int j = 0; j month.length; j ++) {
System.out.print(month[j]);
}
// 如果第二个月周数不小于第一个月，则在本行再输出第二个月的日期
System.out.print("\t");
if(month2.length i) {
for(int j = 0; j month.length; j ++) {
System.out.print(month2[i][j]);
}
}
System.out.println();
}
// 如果第二个月周数大于第一个月，则再输出第二个月的日期（可用2月份检验）
if(month1.length month2.length) {
int deltaMonth = month2.length - month1.length;
for(int i = 0; i deltaMonth; i ++) {
for(int j = 0; j 7; j ++) {
System.out.print(" ");
}
System.out.print("\t");
for(int j = 0; j 7; j ++) {
System.out.print(month2[month1.length + i][j]);
}
}
}
}
private static String[][] putMonth(Calendar cal) {
ListListString listArray = new ArrayListListString();
int month = cal.get(Calendar.MONTH);
cal.set(Calendar.DATE, 1);
int startDayOfWeek1 = cal.get(Calendar.DAY_OF_WEEK);
ListString list = new ArrayListString();
// 先设置为本周属于上个月的几天，以空字符显示
cal.add(Calendar.DATE, -(startDayOfWeek1 - Calendar.SUNDAY) - 1);
for(int i = Calendar.SUNDAY; i startDayOfWeek1; i ++) {
list.add("\t");
}
// 重新初始化为本月第一天
cal.set(Calendar.MONTH, month);
cal.set(Calendar.DATE, 1);
int maxDate = cal.getActualMaximum(Calendar.DATE); // 本月最多的天数（不用再去判断是否闰年了）
for(int j = 1; j = maxDate; j ++) {
list.add(String.format("%4s", j + ""));
if(list.size() == 7) {
ListString list2 = new ArrayListString(list);
listArray.add(list2); // 碰到星期六就换行
list = new ArrayListString();
} else if(j == maxDate) {
listArray.add(list); // 最后一天就将最后一周添加进来
}
}
String[][] monthDates = new String[listArray.size()][7];
for(int i = 0; i listArray.size(); i ++) {
ListString item = listArray.get(i);
for(int j = 0; j 7; j ++) {
if(item.size() j) { // 如果是最后一周的话可能存在下标越界
monthDates[i][j] = item.get(j);
} else { // 下标越界的时候设置为空字符串
monthDates[i][j] = "\t";
}
}
}
return monthDates;
}
private static void printWeek() {
for(int i = Calendar.SUNDAY; i = Calendar.SATURDAY; i ++) {
System.out.print(String.format("%4s", DAY_OF_WEEK[i - 1]));
}
System.out.print("\t");
for(int i = Calendar.SUNDAY; i = Calendar.SATURDAY; i ++) {
System.out.print(String.format("%4s", DAY_OF_WEEK[i - 1]));
}
System.out.println();
}
}
java中如何读取文件中内容，并打印日历
public class ReadFromFile {
/**
* 以字节为单位读取文件，常用于读二进制文件，如图片、声音、影像等文件。
*/
public static void readFileByBytes(String fileName) {
File file = new File(fileName);
InputStream in = null;
try {
System.out.println("以字节为单位读取文件内容，一次读一个字节：");
// 一次读一个字节
in = new FileInputStream(file);
int tempbyte;
while ((tempbyte = in.read()) != -1) {
System.out.write(tempbyte);
}
in.close();
} catch (IOException e) {
e.printStackTrace();
return;
}
try {
System.out.println("以字节为单位读取文件内容，一次读多个字节：");
// 一次读多个字节
byte[] tempbytes = new byte[100];
int byteread = 0;
in = new FileInputStream(fileName);
ReadFromFile.showAvailableBytes(in);
// 读入多个字节到字节数组中，byteread为一次读入的字节数
while ((byteread = in.read(tempbytes)) != -1) {
System.out.write(tempbytes, 0, byteread);
}
} catch (Exception e1) {
e1.printStackTrace();
} finally {
if (in != null) {
try {
in.close();
} catch (IOException e1) {
}
}
}
}
/**
* 以字符为单位读取文件，常用于读文本，数字等类型的文件
*/
public static void readFileByChars(String fileName) {
File file = new File(fileName);
Reader reader = null;
try {
System.out.println("以字符为单位读取文件内容，一次读一个字节：");
// 一次读一个字符
reader = new InputStreamReader(new FileInputStream(file));
int tempchar;
while ((tempchar = reader.read()) != -1) {
// 对于windows下，\r\n这两个字符在一起时，表示一个换行。
// 但如果这两个字符分开显示时，会换两次行。
// 因此，屏蔽掉\r，或者屏蔽\n。否则，将会多出很多空行。
if (((char) tempchar) != '\r') {
System.out.print((char) tempchar);
}
}
reader.close();
} catch (Exception e) {
e.printStackTrace();
}
try {
System.out.println("以字符为单位读取文件内容，一次读多个字节：");
// 一次读多个字符
char[] tempchars = new char[30];
int charread = 0;
reader = new InputStreamReader(new FileInputStream(fileName));
// 读入多个字符到字符数组中，charread为一次读取字符数
while ((charread = reader.read(tempchars)) != -1) {
// 同样屏蔽掉\r不显示
if ((charread == tempchars.length)
(tempchars[tempchars.length - 1] != '\r')) {
System.out.print(tempchars);
} else {
for (int i = 0; i charread; i++) {
if (tempchars[i] == '\r') {
continue;
} else {
System.out.print(tempchars[i]);
}
}
}
}
} catch (Exception e1) {
e1.printStackTrace();
} finally {
if (reader != null) {
try {
reader.close();
} catch (IOException e1) {
}
}
}
}
/**
* 以行为单位读取文件，常用于读面向行的格式化文件
*/
public static void readFileByLines(String fileName) {
File file = new File(fileName);
BufferedReader reader = null;
try {
System.out.println("以行为单位读取文件内容，一次读一整行：");
reader = new BufferedReader(new FileReader(file));
String tempString = null;
int line = 1;
// 一次读入一行，直到读入null为文件结束
while ((tempString = reader.readLine()) != null) {
// 显示行号
System.out.println("line " + line + ": " + tempString);
line++;
}
reader.close();
} catch (IOException e) {
e.printStackTrace();
} finally {
if (reader != null) {
try {
reader.close();
} catch (IOException e1) {
}
}
}
}
/**
* 随机读取文件内容
*/
public static void readFileByRandomAccess(String fileName) {
RandomAccessFile randomFile = null;
try {
System.out.println("随机读取一段文件内容：");
// 打开一个随机访问文件流，按只读方式
randomFile = new RandomAccessFile(fileName, "r");
// 文件长度，字节数
long fileLength = randomFile.length();
// 读文件的起始位置
int beginIndex = (fileLength 4) ? 4 : 0;
// 将读文件的开始位置移到beginIndex位置。
randomFile.seek(beginIndex);
byte[] bytes = new byte[10];
int byteread = 0;
// 一次读10个字节，如果文件内容不足10个字节，则读剩下的字节。
// 将一次读取的字节数赋给byteread
while ((byteread = randomFile.read(bytes)) != -1) {
System.out.write(bytes, 0, byteread);
}
} catch (IOException e) {
e.printStackTrace();
} finally {
if (randomFile != null) {
try {
randomFile.close();
} catch (IOException e1) {
}
}
}
}
/**
* 显示输入流中还剩的字节数
*/
private static void showAvailableBytes(InputStream in) {
try {
System.out.println("当前字节输入流中的字节数为:" + in.available());
} catch (IOException e) {
e.printStackTrace();
}
}
public static void main(String[] args) {
String fileName = "C:/temp/newTemp.txt";
ReadFromFile.readFileByBytes(fileName);
ReadFromFile.readFileByChars(fileName);
ReadFromFile.readFileByLines(fileName);
ReadFromFile.readFileByRandomAccess(fileName);
}
}
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