用java在控制檯打印日曆格式

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以下是 用java編程，在控制檯打印日曆##

PrintDate.java文件內容如下，複製直接可用：

package com.liuzh.printdate;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Scanner;

public class PrintDate {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner input = new Scanner(System.in);
		System.out.println("請輸入一個日期，如2017-08");
		String sDate = input.next();
		
		Date date = null;
		SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM");
		
		try{
			date = sdf.parse(sDate);
		} catch (ParseException e) {
			e.printStackTrace();
		}
		
		printDate(date);
	}

	//打印日曆
	private static void printDate(Date date){
		int[] a= {0,31,29,31,30,31,30,31,31,30,31,30,31};//閏年每月天數
		int[] b= {0,31,28,31,30,31,30,31,31,30,31,30,31};//平年每月天數
		int sumDays = 0;
		int sumDays1 = 0;
		int year = date.getYear() + 1900;
		int month = date.getMonth() + 1;
		int day = date.getDay(); // 當前月第一天是星期幾
		int count = 0;
		
		
		if (isLeaPYear(year)) {
			sumDays = a[month];
			if(month==1){
				if(isLeaPYear(year--)){
					sumDays1 = a[12];
				}else{
					sumDays1 = b[12];
				}
			}else{
				sumDays1 = a[month-1];
			}
		}else{
			sumDays = b[month];
			if(month==1){
				if(isLeaPYear(year--)){
					sumDays1 = a[12];
				}else{
					sumDays1 = b[12];
				}
			}else{
				sumDays1 = b[month-1];
			}
		}
		
		System.out.println("\n\n日\t一\t二\t三\t四\t五\t六");
		System.out.println("---------------------------------------------------");
		//打印對應星期的天數
		for (int i = day-1; i >= 0; i--) {
			System.out.print("(" + (sumDays1 - i) +")" + "\t");
			count++;
			if (count == 7) {
				System.out.println();
				count = 0;
			}
		}
		//每月前面的缺省
		for (int i = 1; i <= sumDays; i++) {
			System.out.print(i + "\t");
			count++;
			if (count == 7) {
				System.out.println();
				count = 0;
			}
		}
		//每月後面的缺省
		if (count!=0) {
			for (int i = 1; i <= 7-count; i++) {
				System.out.print("(" + i +")" + "\t");
			}
		}
		
		
	}
	
	
	//判斷是否爲閏年
	private static boolean isLeaPYear(int year){
		if (year % 400 == 0 || (year % 4 == 0 && year % 100 != 0)) {
			return true;
		}else{
			return false;
		}
	}

}

運行結果如下：