在Java中，如何查找一年中或一个月中的第几个星期？
以下示例显示年份和月份的第几周。
package com.yiibai;
import java.util.*;
public class DisplayWeekNumber {
public static void main(String[] args) throws Exception {
Date d1 = new Date();
Calendar cl = Calendar.getInstance();
cl.setTime(d1);
System.out.println("today is " + cl.WEEK_OF_YEAR + " week of the year");
System.out.println("today is a " + cl.DAY_OF_MONTH
+ "month of the year");
System.out.println("today is a " + cl.WEEK_OF_MONTH
+ "week of the month");
}
}
上述代码示例将产生以下结果。
today is 3 week of the year
today is a 5month of the year
today is a 4week of the month
示例-2
以下是一年中的一个月的一个例子。
package com.yiibai;
import java.util.Calendar;
public class DisplayWeekNumber2 {
public static void main(String[] args) {
Calendar cal = Calendar.getInstance();
System.out.println("Current week of month is : "
+ cal.get(Calendar.WEEK_OF_MONTH));
System.out.println("Current week of year is : "
+ cal.get(Calendar.WEEK_OF_YEAR));
cal.add(Calendar.WEEK_OF_MONTH, 1);
System.out.println("date after one year : "
+ (cal.get(Calendar.MONTH) + 1) + "-" + cal.get(Calendar.DATE)
+ "-" + cal.get(Calendar.YEAR));
}
}
上述代码示例将产生以下结果。
Current week of month is : 4
Current week of year is : 38
date after one year : 9-24-2017
