求高手解决，急，急，急！
import java.util.Calendar;
import java.text.SimpleDateFormat;


public class yueli
{
  public static void Output(int month) //返回当月的月历
  {
 
  Calendar now = Calendar.getInstance();
  int year=now.get(Calendar.YEAR);
 
  for( month=1;month<=12;month++)
  {  
  int week = Calendar.DAY_OF_WEEK-1; //当月1日是星期几
  String str=" "+year+"年"+month+"月的月历\n 日 一 二 三 四 五 六\n";
  str+=String.format("%"+4*week+"c", ' '); //前导空格
  int days = MyDate.daysOfMonth(year, month); //计算出当月的天数  
  for (int i=1; i<=days; i++)
  {
  str+=String.format("%4d", i);  
  if ((week+i)%7==0)
  str+="\n";
  }
  System.out.println(str);
  }
   
  } 
  public static void main (String args[])
  {  
  int y=0;
  Output(y);
 
   
  }
}


要求输出本年月历，但输出的日期和星期不对应，求怎样改才能解决

------解决方案--------------------
import java.util.Calendar;
import java.text.SimpleDateFormat;


public class yueli
{
public static void Output(int month) //返回当月的月历
{
  
Calendar now = Calendar.getInstance();
int year=now.get(Calendar.YEAR);
  
for( month=1;month<=12;month++)
{
int week = Mydate.weekOfDay(year, month); //当月1日是星期几 
String str=" "+year+"年"+month+"月的月历\n 日 一 二 三 四 五 六\n";
str+=String.format("%"+4*week+"c", ' '); //前导空格
int days = Mydate.daysOfMonth(year, month); //计算出当月的天数
for (int i=1; i<=days; i++)
{
str+=String.format("%4d", i);
if ((week+i)%7==0)
str+="\n";
}
System.out.println(str);
}

}
public static void main (String args[])
{
int y=0;
Output(y);
  

}
}



------解决方案--------------------

public class Mydate {
public static int daysOfMonth(int year,int month)
{
int days = 0;
if(month!=2)
{
switch(month)
{
case 1:
case 3:
case 5:
case 7:
case 8:
case 10:
case 12:days = 31 ;break;
case 4:
case 6:
case 9:
case 11:days = 30;

}
}
else
{

if(year%4==0 && year%100!=0 || year%400==0)
days = 29;
else days = 28;

}
return days;
}
 
public static int weekOfDay(int year,int month)
{
int weekOfDay = 0;
int totalDay = 0;
int dayOfYear = 0;
for(int i=1900;i<year;i++)
{ 
if(i%4==0&&i%100!=0||i%400==0)
{ 
totalDay+=366; 
}
else
{ totalDay+=365; 
} 
} 
int day = 0;
for(int i=1;i<=month;i++){
day = Mydate.daysOfMonth(year, i);
if(i<month){ dayOfYear+=day;//把用户输入的月份之前的所有天 
} 
}
totalDay += dayOfYear;
weekOfDay=(1+totalDay)%7; 
return weekOfDay;  
}
}