请帮忙解释一下这个程序
import java.util.*;
public class CalendarTest
{
public static void main(String[] args)
{
//constructor d as current date
GregorianCalendar d = new GregorianCalendar();
int today = d.get(Calendar.DAY_OF_MONTH);
int month = d.get(Calendar.MONTH);
//set d to start date of the month
d.set(Calendar.DAY_OF_MONTH,1);
int weekday = d.get(Calendar.DAY_OF_WEEK);
System.out.println("Sun Mon Tue Wed Thu Fri Sat");
for(int i = Calendar.SUNDAY; i<weekday;i++)
System.out.print(" ");
do{
int day = d.get(Calendar.DAY_OF_MONTH);
if(day<10)
System.out.print(" ");
System.out.print(day);
if(day == today)
System.out.print("*");
else
System.out.print(" ");
//start a new line after every saturday
if(weekday == Calendar.SATURDAY)
System.out.println();
d.add(Calendar.DAY_OF_MONTH,1);
weekday=d.get(Calendar.DAY_OF_WEEK);
}
while(d.get(Calendar.MONTH)==month);
if(weekday != Calendar.SUNDAY)
System.out.println();
}
}
这是core java中的一个利用GregorianCalendar打印出当前这个月的日历的程序,我想问的是do循环中的if(day<10) System.out.print(" ");是什么意思,为什么要把day和10进行比较呢?
另外我想问一下,在jcreator环境中进行调试程序时,按F10进行step时有没有什么地方可以像VC调试器一样随时查看程序中的某个变量内容?
谢谢