Question

java日历程序

求一个程序，输入年，月，日，显示当前日期，前一天，后一天，后N天日期
还要有异常处理，例如我输入的日期不正确，程序要提示从新输入等，谢谢大哥大姐们

Answer 1

import java.util.Calendar;

import java.util.Date;

class Calendar1

{

public static void main(String args[])

{

int i=0,n=0;

//获得今天的日期

Calendar mycal=Calendar.getInstance();

int m=mycal.get(Calendar.MONTH),y=mycal.get(Calendar.YEAR),d=mycal.get(Calendar.DAY_OF_MONTH);

int year=mycal.get(Calendar.YEAR);

int month=mycal.get(Calendar.MONTH);

//输入日期

try

{

year=Integer.parseInt(args[0]);

month=Integer.parseInt(args[1])-1;

}

//处理异常

catch(ArrayIndexOutOfBoundsException e)

{

System.out.println("!!!!!!!!!!!!!!!!!!!!输入参数有误!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1\n一下是本月的日历");

year=mycal.get(Calendar.YEAR);

month=mycal.get(Calendar.MONTH);

}

catch(NumberFormatException e1)

{

System.out.println("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1输入的是非法字符!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!\n一下是本月的日历");

}

mycal.set(year,month,1);

System.out.println(" "+year+"year "+"Month`s name is "+(month+1)+" 月份");

System.out.println("\t===================================================");

System.out.println("\tSun\tMon\tThu\tWed\tThe\tFri\tSat");

int a=mycal.get(Calendar.DAY_OF_WEEK);//得到每个月第一天是星期几

//Calendar中1-星期天，2-星期一，3-星期二，4-星期三，5-星期四，6-星期五，7-星期六

int b=mycal.get(Calendar.DAY_OF_WEEK);

int maxDate=mycal.getActualMaximum(Calendar.DATE);

//获得一个月的天数

if(a>1)

{

for(n=1;n<a;n++)

System.out.printf("\t");

}

n=n-1;

for(i=1;i<=maxDate;i++,n++)

{

if(n%7==0)

System.out.println();

System.out.printf("\t"+i);

if(month==m&&year==y&&i==d)

System.out.print("*");

}

System.out.println();

}

}

Answer 2

jsp就行要不要