mycalendar.java

我的课程设计

import java.text.SimpleDateFormat;
import java.util.*;
import java.io.*;

public class Mycalendar extends GregorianCalendar 
{
	public static void main(String args[])
	{
		BufferedReader reader = new BufferedReader
		(new InputStreamReader(System.in));
		String line = "";
		int temp = 0;
		int weakNum = 0;
		int monthNum = 0;
		int[]days = {31,28,31,30,31,30,31,31,30,31,30,31};
		Calendar c = GregorianCalendar.getInstance();
		Date nowMonth = new Date();
		Date nowDay = new Date();
		//获取当前月份
		SimpleDateFormat matter1 = 
			new SimpleDateFormat("MM");
		    int mm=Integer.parseInt(matter1.format(nowMonth));
		 //获取当前日   
		 SimpleDateFormat matter2 = 
			new SimpleDateFormat("dd");
		    int d=Integer.parseInt(matter2.format(nowDay));
		    
		//    System.out.print(mm);
		
		//控制输入周数
		System.out.print("please input weakNum:");
		try
		{
			line = reader.readLine();
			temp = (new Integer(line)).intValue();
			
		}
		catch(Exception e){}
		weakNum = temp;
		monthNum = weakNum/4;
		
		//控制输入年份
		System.out.print("please input year:");
		try
		{
			line = reader.readLine();
			temp = (new Integer(line)).intValue();
			
		}
		catch(Exception e){}
		c.set(Calendar.YEAR,temp);
		
		//控制输入月份
		System.out.print("please input month:");
		try
		{
			line = reader.readLine();
			temp = (new Integer(line)).intValue();
			
		}
		catch(Exception e){}
	    if(temp<1&&temp>12)
	    {
		   System.out.println("month must be between 1 and 12.");
		   System.out.println(0);
	     }
         temp--;
         c.set(Calendar.MONTH,temp);
         
     int month = c.get(Calendar.MONTH);
     int year = c.get(Calendar.YEAR);
     
     //显示输出各月份日历
     System.out.println("\n  ***************校 历**************");
     for(int k=1;k<=monthNum;k++)
     { 
    	
        if((year%4==0&&year%100!=0||year%400==0)&&month==2) 
        days[2]++;	
        System.out.println("  <-----------"+year+"年"+(month+1)+"月份---------->");
        System.out.println("  SUN  MON  TUE  WED  THU  FRI  SAT");
        c.set(DATE,1);
        c.set(Calendar.MONTH,month);
        c.set(Calendar.YEAR,year);
        int first=c.get(Calendar.DAY_OF_WEEK);
        for(int i=1;i<first;i++)
    	 System.out.print("     ");
        
        for(int i=1;i<=days[month];i++)
        {
        	 if(i<10)
        	 System.out.print(" ");
        	 if(month+1==mm&&i==d)
        	 System.out.print("  "+"*"+i);
        	 else
        	 System.out.print("   "+i);
          // System.out.print("  ");
        	 if(first++%7==0)
        	 System.out.println("");
        }
        
        month++;
        if(month==13)
        { 
        	month = 0;
         	year++;
         }
        System.out.println("\n\n");
     }
     
     System.out.println("\n");
     
   }
}