Calendar procedure示例

procedure

import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;
import java.util.Scanner;

/**
 * 日历程序
 * @author 小沐
 *
 */
public class CalendarProcedure2 {

	public static void main(String[] args) throws ParseException {
		// TODO Auto-generated method stub
		
		//String  str = "2019-4-10";
		
		// 获取键盘输入
		System.out.println("请输入日期(格式为：xxxx-xx-xx)：");
		Scanner scanner = new Scanner(System.in);
		String str = scanner.nextLine();
        //类型转换
		DateFormat df = new SimpleDateFormat("yyyy-MM-dd");
		Date date = df.parse(str);

		Calendar  c = new GregorianCalendar();
		c.setTime(date);
		
		int  day = c.get(Calendar.DAY_OF_MONTH);
		int days = c.getActualMaximum(Calendar.DATE);
		
		System.out.println("日\t一\t二\t三\t四\t五\t六");

		
		c.set(Calendar.DAY_OF_MONTH, 1);  
		// 判断小于周几
		for(int i=0;i<c.get(Calendar.DAY_OF_WEEK)-1;i++){
			System.out.print("\t");
		}
		
		for(int i=1;i<=days;i++){
			if(day == c.get(Calendar.DAY_OF_MONTH)){
				System.out.print(c.get(Calendar.DAY_OF_MONTH)+"*\t");
			}else{
				System.out.print(c.get(Calendar.DAY_OF_MONTH)+"\t");
			}
			
			if(c.get(Calendar.DAY_OF_WEEK)==Calendar.SATURDAY){   // p判断日期				                
                 System.out.println();   
			}	
			c.add(Calendar.DAY_OF_MONTH, 1); 	
		}
	}
}