根据出生日期判断属相和星座，Java语言编写，无bug
习题代码
package com.newer.oop;import java.util.InputMismatchException;import java.util.Scanner;/*** author: HCQ* date: /7/26 * see: 1. 根据生日判断属相和星座 2. 年份分为闰年和平年 3. 判断月份和日期是否输入正确*/public class Birthday {static int year;private static Scanner sc;static boolean dayPanDuan; // 判断日期输入是否正确，月份天数正确为true，错误为false/* 根据年份判断属相 */public static String ShuXiang(int year) {String sx = null;switch (year % 12) {case 4:sx = "鼠";break;case 5:sx = "牛";break;case 6:sx = "虎";break;case 7:sx = "兔";break;case 8:sx = "龙";break;case 9:sx = "蛇";break;case 10:sx = "马";break;case 11:sx = "羊";break;case 0:sx = "猴";break;case 1:sx = "鸡";break;case 2:sx = "狗";break;case 3:sx = "猪";break;}return sx;}/* 根据月份和日期判断星座 */public static String XingZuo(int year, int month, int day) {String xz = null;if ((month == 3 && day >= 21 && day <= 31) || (month == 4 && day >= 1 && day <= 19)) {xz = "白羊";}if ((month == 4 && day >= 20 && day <= 30) || (month == 5 && day >= 1 && day <= 20)) {xz = "金牛";}if ((month == 5 && day >= 21 && day <= 31) || (month == 6 && day >= 1 && day <= 21)) {xz = "双子";}if ((month == 6 && day >= 22 && day <= 30) || (month == 7 && day >= 1 && day <= 22)) {xz = "巨蟹";}if ((month == 7 && day >= 23 && day <= 31) || (month == 8 && day >= 1 && day <= 22)) {xz = "狮子";}if ((month == 8 && day >= 23 && day <= 31) || (month == 9 && day >= 1 && day <= 22)) {xz = "处女";}if ((month == 9 && day >= 23 && day <= 30) || (month == 10 && day >= 1 && day <= 23)) {xz = "天秤";}if ((month == 10 && day >= 24 && day <= 31) || (month == 11 && day >= 1 && day <= 22)) {xz = "天蝎";}if ((month == 11 && day >= 23 && day <= 30) || (month == 12 && day >= 1 && day <= 21)) {xz = "射手";}if ((month == 12 && day >= 22 && day <= 31) || (month == 1 && day >= 1 && day <= 19)) {xz = "摩羯";}if ((month == 1 && day >= 20 && day <= 31) || (month == 2 && day >= 1 && day <= 18)) {xz = "水瓶";}if (year % 400 == 0 || (year % 4 == 0 && year % 100 != 0)) { // 闰年2月29天if ((month == 2 && day >= 19 && day <= 29) || (month == 3 && day >= 1 && day <= 20)) {xz = "双鱼";}} else { // 平年2月28天if ((month == 2 && day >= 19 && day <= 28) || (month == 3 && day >= 1 && day <= 20)) {xz = "双鱼";}}return xz;}/* 判断日期是否输入正确 */public static void PanDuanday(int year, int month, int day) {switch (month) {case 1:if (day >= 1 && day <= 31) { // 日期在该月份中，dayPanDuan为turedayPanDuan = true;break;} else { // 日期在该月份中，dayPanDuan为falsedayPanDuan = false;break;}case 2:if (year % 400 == 0 || (year % 4 == 0 && year % 100 != 0)) {if (day >= 1 && day <= 29) {dayPanDuan = true;break;} else {dayPanDuan = false;break;}} else {if (day >= 1 && day <= 28) {dayPanDuan = true;break;} else {dayPanDuan = false;break;}}case 3:if (day >= 1 && day <= 31) {dayPanDuan = true;break;} else {dayPanDuan = false;break;}case 4:if (day >= 1 && day <= 30) {dayPanDuan = true;break;} else {dayPanDuan = false;break;}case 5:if (day >= 1 && day <= 31) {dayPanDuan = true;break;} else {dayPanDuan = false;break;}case 6:if (day >= 1 && day <= 30) {dayPanDuan = true;break;} else {dayPanDuan = false;break;}case 7:if (day >= 1 && day <= 31) {dayPanDuan = true;break;} else {dayPanDuan = false;break;}case 8:if (day >= 1 && day <= 31) {dayPanDuan = true;break;} else {dayPanDuan = false;break;}case 9:if (day >= 1 && day <= 30) {dayPanDuan = true;break;} else {dayPanDuan = false;break;}case 10:if (day >= 1 && day <= 31) {dayPanDuan = true;break;} else {dayPanDuan = false;break;}case 11:if (day >= 1 && day <= 30) {dayPanDuan = true;break;} else {dayPanDuan = false;break;}case 12:if (day >= 1 && day <= 31) {dayPanDuan = true;break;} else {dayPanDuan = false;break;}}}/* main方法 */public static void main(String[] args) {sc = new Scanner(System.in);System.out.println("请输入");System.out.print("年: ");try {year = sc.nextInt(); // 输入年份System.out.print("月: ");int month = sc.nextInt(); // 输入月份if (month >= 1 && month <= 12) { // 判断月份是否输入正确，是否在1-12中System.out.print("日: ");int day = sc.nextInt(); // 输入日期PanDuanday(year, month, day); // 调用判断日期的方法if (dayPanDuan == true) { // 日期在该月份中，为tureSystem.out.println(year + "/" + month + "/" + day + " " + "属相: " + ShuXiang(year) + ", " + "星座: "+ XingZuo(year, month, day)); // 输出打印年月日，属相和星座} else { // 日期不在该月份中，为falseSystem.out.println("输入日期有误。");}} else { // 月份不在1-12中System.out.println("输入月份有误。");}} catch (InputMismatchException e) {System.out.println("输入非法。");} catch(Exception e) {System.out.println("其他错误。");e.printStackTrace();} finally {System.out.println("程序结束！");System.exit(0); //退出系统}}}
我的总结
该题主要运用了switch语句，if else语句， try catch finally语句此题解决了年份，月份和日期输入非法的BUGa. 年份，月份，日期输入非数字会报“输入非法。”的提示
b. 月份只能在1-12中，否则报“输入月份有误。”的提示
c. 日期只能是该月份的天数
1、3、5、7、8、10、12月31天
4、6、9、11 月30天
2月平年28天，闰年29天
如果不在这些范围内，会提示“输入日期有误。”
答案仅供参考，小萌新初次写博客，大神勿喷。
/8/3
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