Java入門

• 實現目標
• 匯入內容
• 原始碼

實現目標

打印出指定某年某月的日曆（不含GUI）

匯入內容

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

原始碼

// An highlighted block
    public static void main(String[] args) {
        Calendar calendar = Calendar.getInstance();
        int count = 1;
        int days;
        Scanner sc=new Scanner(System.
 
in);
        System.out.print("請輸入年份");
        int year = sc.nextInt();
        System.out.print("請輸入月份");
        int m = sc.nextInt();
        int month=m-1;
        calendar.set(Calendar.YEAR, year);
        calendar.set(Calendar.MONTH, month);
        calendar.set(Calendar.DATE, 0);
        if (
 
((year%4==0&&year%100!=0)||(year%400==0))&&m==2) {//判斷閏年
         days=29;
        }else{
            switch (m) {
            case 2:
                days = 28;
                break;
            case 1,3,5,7,8,10,12:
                days = 31;
                break;
            case 4,6,9,11
 
:
                days = 30;
                break;
            default:
                days = 0;
            }   
        }
        System.out.println(year + "年" + m + "月的日曆：");
        System.out.println("星期日\t星期一\t星期二\t星期三\t星期四\t星期五\t星期六");
        while (count <=days) {
            calendar.add(Calendar.DAY_OF_MONTH, 1);
            int day = calendar.get(Calendar.DATE) ;  
            if (count ==1) {
                for (int i = 0; i < day; i++) {
                    System.out.print("\t");
                }
            }
            if (count%7 == 0) {
                System.out.println();        
            }
            System.out.print(calendar.get(Calendar.DATE) + "\t");  
            count++;
        }
    }

注：這個並沒有實現圖形介面，也就是隻能在黑框框裡面的東東