用java做个日历，如果是这一天，就标上*号

最新推荐文章于 2023-11-16 19:52:53 发布

原创最新推荐文章于 2023-11-16 19:52:53 发布 · 516 阅读

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本文介绍了一个使用Java编写的程序，该程序能够打印出指定月份的日历视图，并标记当前日期。通过GregorianCalendar类获取当前日期信息，并利用DateFormatSymbols类获取星期的缩写名称。

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package calendartest;

import java.text.DateFormatSymbols;
import java.util.*;

public class CalendarTest {
public static void main (String[] args)
{
GregorianCalendar d = new GregorianCalendar();

int today = d.get(Calendar.DAY_OF_MONTH);
int month = d.get(Calendar.MONTH);

d.set(Calendar.DAY_OF_MONTH,1);

int weekday = d.get(Calendar.DAY_OF_WEEK);

int firstDayOfWeek = d.getFirstDayOfWeek();

int indent = 0;
while (weekday != firstDayOfWeek)
{
indent++;
d.add(Calendar.DAY_OF_MONTH,-1);
weekday = d.get(Calendar.DAY_OF_WEEK);
}

String[] weekdayNames = new DateFormatSymbols().getShortWeekdays();
do
{
System.out.printf("%4s", weekdayNames[weekday]);
d.add(Calendar.DAY_OF_MONTH,1);
weekday = d.get(Calendar.DAY_OF_WEEK);
}while (weekday != firstDayOfWeek);
System.out.println();
for (int i = 0;i<=weekday;i++)
{
System.out.printf(" ");

}

d.set(Calendar.DAY_OF_MONTH,1);
do
{
int day = d.get(Calendar.DAY_OF_MONTH);
System.out.printf("%3d", day);

if (day == today) System.out.print("*");
else System.out.print(" ");

d.add(Calendar.DAY_OF_MONTH,1);
weekday = d.get(Calendar.DAY_OF_WEEK);

if (weekday == firstDayOfWeek) System.out.println();
}
while (d.get(Calendar.MONTH)==month);

if (weekday != firstDayOfWeek) System.out.println();
}
}package calendartest;

import java.text.DateFormatSymbols;
import java.util.*;

public class CalendarTest {
public static void main (String[] args)
{
GregorianCalendar d = new GregorianCalendar();

int today = d.get(Calendar.DAY_OF_MONTH);
int month = d.get(Calendar.MONTH);

d.set(Calendar.DAY_OF_MONTH,1);

int weekday = d.get(Calendar.DAY_OF_WEEK);

int firstDayOfWeek = d.getFirstDayOfWeek();

int indent = 0;
while (weekday != firstDayOfWeek)
{
indent++;
d.add(Calendar.DAY_OF_MONTH,-1);
weekday = d.get(Calendar.DAY_OF_WEEK);
}

String[] weekdayNames = new DateFormatSymbols().getShortWeekdays();
do
{
System.out.printf("%4s", weekdayNames[weekday]);
d.add(Calendar.DAY_OF_MONTH,1);
weekday = d.get(Calendar.DAY_OF_WEEK);
}while (weekday != firstDayOfWeek);
System.out.println();
for (int i = 0;i<=weekday;i++)
{
System.out.printf(" ");

}

d.set(Calendar.DAY_OF_MONTH,1);
do
{
int day = d.get(Calendar.DAY_OF_MONTH);
System.out.printf("%3d", day);

if (day == today) System.out.print("*");
else System.out.print(" ");

d.add(Calendar.DAY_OF_MONTH,1);
weekday = d.get(Calendar.DAY_OF_WEEK);

if (weekday == firstDayOfWeek) System.out.println();
}
while (d.get(Calendar.MONTH)==month);

if (weekday != firstDayOfWeek) System.out.println();
}
}