1、輸出機票價格

package com.XuanZe;
/*
 *JiPiao.java
 *@Boer
 *2018-12-26
 *輸出機票價格
 */
import java.util.Scanner;
public class JiPiao2 {
    public static void main(String[] args) {
        //匯入Scanner類
        Scanner input = new Scanner(System.in);
        //定義個常量float
        float JIPIAO = 5000;
        while
 
(true) {
            System.out.println("請輸入您出行的月份：1~12");
            int yueFeng = input.nextInt();
            System.out.println("請問您選擇的是頭等艙還是經濟艙？頭等艙輸入1，經濟艙輸入2");
            int cangWei = input.nextInt();
            switch(yueFeng) {
            case 4:
            case 5:
            case 6:
            
 
case 7:
            case 8:
            case 9:
            case 10:
            double sum = cangWei == 1?JIPIAO*0.9:JIPIAO*0.6;
            System.out.println("您的機票價格為："+sum);
            break;
            default:
            double sum1 = cangWei == 1?JIPIAO*0.5:JIPIAO*0.4;
            System.out.println(
 
"您的機票價格為："+sum1);
            }
        }
    }
}

2、骰子游戲

package com.XuanZe;
import java.util.Scanner;

/*
 * 2018-12-26
 * 骰子賭博遊戲
 * */
public class Game {
    public static void main(String[] args) {
        //匯入一個鍵盤輸入的類
        Scanner input = new Scanner(System.in);
        //定義錢數
        int money = 1000;
        System.out.println("*****歡迎來到澳門賭場*****");
        while(true) {
        System.out.println("是否開始遊戲Y/N?");
        String Y_N = input.next();
        //判斷是否遊戲除了輸入N，否則視為開始遊戲
        if(!"N".equals(Y_N)) {
            System.out.println("遊戲開始");
            //定義骰子數a b  c
            int a = (int)(Math.random()*6)+1;
            int b = (int)(Math.random()*6)+1;
            int c = (int)(Math.random()*6)+1;
            //定義結果daoXiao
            String daXiao = (a+b+c)>9?"大":"小";
            //定義yaDaXiao
            System.out.print("請壓大小：");
            String yaDaXiao = input.next();
            //定義下注yaQian
            System.out.print("請下注：");
            int yaQian = input.nextInt();
            //輸出骰子結果
            System.out.println("買定離手"+a+","+b+","+c+","+daXiao);
            if(yaDaXiao.equals(daXiao)) {
            System.out.println("恭喜你壓中了");
                money += yaQian;
            }else { 
                System.out.println("很遺憾你沒中獎");
                money -= yaQian;
            }
            System.out.println("當前餘額"+money);
        }else {
            System.out.println("請退出！");
            break;
        }
    
        }
    }
}

 3、switch實現135學習，246複習，週日休息

package com.XuanZe;
import java.util.Scanner;
/*
 * KeCheng.java
 * @Boer
 * 時間安排
 * */
public class KeCheng {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        System.out.println("請輸入今天是星期幾：");
        while(true) {
        int day = input.nextInt();
        switch(day) {
        case 1:
        case 3:
        case 5:
            System.out.println("今天是學習！");
            break;
        case 2:
        case 4:
        case 6:
            System.out.println("今天是複習！");
            break;
        case 7:
            System.out.println("今天是休息！");
            break;
        default:
            System.out.println("輸入不規範，請重試！");
            break;
        }
        System.out.println("請輸入今天是星期幾：");
        }
    }
}

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