Java日历

无实际教学意义，纯粹个人学习记录。

package test;

import java.util.Calendar;
import java.util.Scanner;


public class Test{
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.println("请输入您要查询的日期。格式：yyyy-mm-dd");
        String strDate = sc.next();
        java.sql.Date date = java.sql.Date.valueOf(strDate); //String转date
        Calendar cal = Calendar.getInstance();
        cal.setTime(date);//设置date
        int maxDate = cal.getActualMaximum(Calendar.DATE); //一个月最多几天
        int nowDate = cal.get(Calendar.DATE);   //当前是几号
        int dayOfWeek = cal.get(Calendar.DAY_OF_WEEK);  //一周第几天
        //输出日一二三四五六
        System.out.println("日t一t二t三t四t五t六");
        for (int i = 1; i<= dayOfWeek;i++){
            System.out.print(' '+"t");
        }
        //循环输出当月天数
        int count = 1 + dayOfWeek;  //第几天统计
        for (int i = 1 ; i <= maxDate ; i++ ){
            if (i == nowDate){
                System.out.print(i+"*"+"t");
            }else {
                System.out.print(i+"t");
            }
            count++;
            if (count%7 == 1){
                System.out.println();
            }
            }
        }
}

运行效果如下：