java控制台中打印万年历

来源：互联网发布：淘宝u站九块九包邮编辑：程序博客网时间：2024/06/09 22:59
package test;import java.util.Calendar;import java.util.Scanner;public class MyDate {static Scanner sc = new Scanner(System.in);int year;int month;boolean islearyear;int days;int isweekday;boolean start = true;public static void main(String[] args) {new MyDate().run();}public void run() {while (start) {System.out.println("1.查询日历            2.退出");String s = sc.next();if (s.equals("1")) {System.out.println("");System.out.println("请输入年份");year = sc.nextInt();System.out.println("请输入月份");month = sc.nextInt();islearyear = isLeapYear(year);days = getMonthDay(month);isweekday = isweekday();System.out.println("日\t一\t二\t三\t四\t五\t六");// 换行的标志int sigln = 0;// 打印空格for (int j = 0; j < isweekday; j++) {if (isweekday == 7)return;System.out.print("\t");sigln++;}// 打印日期for (int i = 1; i <= days; i++) {if (sigln == 7) {System.out.println("");sigln = 0;}System.out.print(i + "\t");sigln++;}System.out.println();} else if (s.equals("2")) {start = false;System.out.println("over!!!");break;} else {System.out.println("选错了");break;}}}// 获得每月的1号是星期几public int isweekday() {// 方法1.用已经封装好的calendar类获得每月的第一天是周几Calendar aa = Calendar.getInstance();aa.set(year, month - 1, 1);return aa.get(Calendar.DAY_OF_WEEK) - 1;// 方法2.我用了网上的一个计算公式得到了每个月的第一天是周几// int sum = 0, count = 0;// for (int i = 1900; i < year; i++) {// if (isLeapYear(i))// count++;// }// for (int i = 0; i < month; i++)// sum += getMonthDay(i);// return ((sum + count + (year - 1900) * 365 - 1) % 7+2);}public boolean isLeapYear(int year1) // 判断是否是闰年{return ((year1 % 4 == 0 && year1 % 100 != 0) || (year1 % 400 == 0));}public int getMonthDay(int m) // 获取每个月的天数{switch (m) {case 1:case 3:case 5:case 7:case 8:case 10:case 12:return 31;case 4:case 6:case 9:case 11:return 30;case 2:if (isLeapYear(year))return 29;elsereturn 28;default:return 0;}}}
直接贴代码了，过程很简单，没有用sun封装的日期类，
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