java入門程序100例學習筆記（008黑色星期五）

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package chest;

import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.GregorianCalendar;
import java.util.Scanner;

/**
 *
 * @author swll
 */
public class Chest {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here
        Scanner input = new Scanner(System.in);
        System.out.println("請輸入起始年份");
        int year = input.nextInt();
        System.out.println("請輸打算未來輸出幾年");
        int n = input.nextInt();
        getblackFri(year, n);

    }

    public static void getblackFri(int year, int n) {
        SimpleDateFormat Sdf = new SimpleDateFormat("yyyy-MM-dd E");
        int k = 0;
        Calendar cal = Calendar.getInstance();
        while (k < n) {
            for (int i = 0; i < 12; i++) {
                cal.set(year, i, 13);
                if (5 == (cal.get(Calendar.DAY_OF_WEEK) - 1)) {
                    System.out.println("黑色星期五" + Sdf.format(cal.getTime()));

                }
            }
            year++;
            k++;
        }

    }
}

問題：黑色星期五

思路：

實現：

總結：努力

代碼下載鏈接：http://download.csdn.net/detail/u013103846/9249165