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这篇文章将为大家详细讲解有关Java如何实现的程序员老黄历，小编觉得挺实用的，因此分享给大家做个参考，希望大家阅读完这篇文章后可以有所收获。
代码如下：
代码段1
package com.test;
/**
* activities的枚举
* @author Xiao
*
*/
public enum ActivitiesEnum {
ACTIVITIES_1("写单元测试", "写单元测试将减少出错", "写单元测试会降低你的开发效率", false),
ACTIVITIES_2("洗澡", "你几天没洗澡了？", "会把设计方面的灵感洗掉", true),
ACTIVITIES_3("锻炼一下身体", "", "能量没消耗多少，吃得却更多", true),
ACTIVITIES_4("抽烟", "抽烟有利于提神，增加思维敏捷", "除非你活够了，死得早点没关系", true),
ACTIVITIES_5("白天上线", "今天白天上线是安全的", "可能导致灾难性后果", false),
ACTIVITIES_6("重构", "代码质量得到提高", "你很有可能会陷入泥潭", false),
ACTIVITIES_7("使用%t", "你看起来更有品位", "别人会觉得你在装逼", false),
ACTIVITIES_8("跳槽", "该放手时就放手", "鉴于当前的经济形势，你的下一份工作未必比现在强", false),
ACTIVITIES_9("招人", "你面前这位有成为牛人的潜质", "这人会写程序吗？", false),
ACTIVITIES_10("面试", "面试官今天心情很好", "面试官不爽，会拿你出气", false),
ACTIVITIES_11("提交辞职申请", "公司找到了一个比你更能干的人，你赶快滚蛋", "鉴于当前的经济形势，你的下一份工作未必比现在强", false),
ACTIVITIES_12("申请加薪", "老板今天心情很好", "公司正在考虑裁员", false),
ACTIVITIES_13("晚上加班", "晚上是程序员精神最好的时候", "", true),
ACTIVITIES_14("在妹子面前吹牛", "改善你矮穷挫的形象", "会被识破", true),
ACTIVITIES_15("撸管", "避免缓冲区溢出", true),
ACTIVITIES_16("浏览成人网站", "重拾对生活的信心", "你会心神不宁", true),
ACTIVITIES_17("命名变量%v", "", "", false),
ACTIVITIES_18("写超过%l行的方法", "你的代码组织的很好，长一点没关系", "你的代码将混乱不堪，你自己都看不懂", false),
ACTIVITIES_19("提交代码", "遇到冲突的几率是最低的", "你遇到的一大堆冲突会让你觉得自己是不是时间穿越了", false),
ACTIVITIES_20("代码复审", "发现重要问题的几率大大增加", "你什么问题都发现不了，白白浪费时间", false),
ACTIVITIES_21("开会", "写代码之余放松一下打个盹，有益健康",false),
ACTIVITIES_22("打DOTA", "你将有如神助", "你会被虐的很惨", true),
ACTIVITIES_23("晚上上线", "晚上是程序员精神最好的时候", "你白天已经筋疲力尽了", false),
ACTIVITIES_24("修复BUG", "你今天对BUG的嗅觉大大提高", "新产生的BUG将比修复的更多", false),
ACTIVITIES_25("设计评审", "设计评审会议将变成头脑风暴", "人人筋疲力尽，评审就这么过了", false),
ACTIVITIES_26("需求评审", "", "", false),
ACTIVITIES_27("上微博", "今天发生的事不能错过", "今天的微博充满负能量", true),
ACTIVITIES_28("上AB站", "还需要理由吗？", "满屏兄贵亮瞎你的眼", true),
ACTIVITIES_29("玩FlappyBird", "今天破纪录的几率很高", "除非你想玩到把手机砸了", true);
private String name;
private String good;
private String bad;
private Boolean weekend;
ActivitiesEnum(String name, String good, String bad, Boolean weekend){
this.setBad(bad);
this.setGood(good);
this.setName(name);
this.setWeekend(weekend);
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getGood() {
return good;
}
public void setGood(String good) {
this.good = good;
}
public String getBad() {
return bad;
}
public void setBad(String bad) {
this.bad = bad;
}
public Boolean getWeekend() {
return weekend;
}
public void setWeekend(Boolean weekend) {
this.weekend = weekend;
}
}代码段2
package com.test;
public enum SpecialsEnum {
SPECIALS(2014, "bad", "待在男（女）友身边", "脱团火葬场，入团保平安。");
private Integer date;
private String type;
private String name;
private String description;
SpecialsEnum (Integer date, String type, String name, String description){
this.setDate(date);
this.setType(type);
this.setName(name);
this.setDescription(description);
}
public Integer getDate() {
return date;
}
public void setDate(Integer date) {
this.date = date;
}
public String getType() {
return type;
}
public void setType(String type) {
this.type = type;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
}代码段3
package com.test;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Calendar;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.Random;
import org.apache.commons.lang.StringUtils;
public class ProgrammerCalendar {
private Integer iday = 0;
private String [] weeks = new String[]{"日", "一","二","三","四","五","六"};
private String [] directions = new String[]{"北方","东北方","东方","东南方","南方","西南方","西方","西北方"};
private String [] tools = new String[]{"Eclipse写程序", "MSOffice写文档", "记事本写程序", "Windows8", "Linux", "MacOS", "IE", "Android设备", "iOS设备"};
private String [] varNames = new String[]{"jieguo", "huodong", "pay", "expire", "zhangdan", "every", "free", "i1", "a", "virtual", "ad", "spider", "mima", "pass", "ui"};
private String [] drinks = new String[]{"水","茶","红茶","绿茶","咖啡","奶茶","可乐","鲜奶","豆奶","果汁","果味汽水","苏打水","运动饮料","酸奶","酒"};
public Integer getIday() {
return iday;
}
public String[] getDirections() {
return directions;
}
/**
* 注意：本程序中的“随机”都是伪随机概念，以当前的天为种子。
*/
public Integer random(Integer daySeed, Integer indexSeed) {
Integer n = daySeed % 11117;
for (int i = 0; i < 100 + indexSeed; i++) {
n = n * n;
n = n % 11117; //11117是个质数
}
return n;
}
public String getTodayString (){
Calendar calendar = Calendar.getInstance();
calendar.setTime(new Date());
return "今天是" + calendar.get(Calendar.YEAR) + "年" + (calendar.get(Calendar.MONTH) + 1)
+ "月" + calendar.get(Calendar.DAY_OF_MONTH)
+ "日 星期" + weeks[calendar.get(Calendar.DAY_OF_WEEK) - 1];
}
public String star(Integer num) {
String result = "";
int i = 0;
while (i < num) {
result += "★";
i++;
}
while(i < 5) {
result += "☆";
i++;
}
return result;
}
private Boolean isWeekend() {
Locale.setDefault(Locale.CHINA);
Calendar calendar = Calendar.getInstance();
return calendar.get(Calendar.DAY_OF_WEEK) == 1 || calendar.get(Calendar.DAY_OF_WEEK) == 7;
}
public List<ActivitiesEnum> filter() {
List<ActivitiesEnum> thisEnum = new ArrayList<ActivitiesEnum>();
// 周末的话，只留下 weekend = true 的事件
if(isWeekend()) {
for (ActivitiesEnum e : ActivitiesEnum.values()) {
if(e.getWeekend()){
thisEnum.add(e);
}
}
return thisEnum;
}
return new ArrayList<ActivitiesEnum>(Arrays.asList(ActivitiesEnum.values()));
}
public void pickTodaysLuck() {
List<ActivitiesEnum> _activities = filter();
Integer numGood = random(iday, 98) % 3 + 2;
Integer numBad = random(iday, 87) % 3 + 2;
List<Map<String, String>> eventArr = pickRandomActivity(_activities, numGood + numBad);
Integer [] specialSize = pickSpecials();
System.out.println("宜：");
for (int i = 0; i < numGood; i++) {
System.out.println(" " + eventArr.get(i).get("name") + (StringUtils.isNotBlank(eventArr.get(i).get("good")) ? ":" + eventArr.get(i).get("good") : ""));
}
System.out.println("不宜：");
for (int i = 0; i < numBad; i++) {
System.out.println(" " + eventArr.get(numGood + i).get("name") + (StringUtils.isNotBlank(eventArr.get(numGood + i).get("bad")) ? ":" + eventArr.get(numGood + i).get("bad") : ""));
}
}
/**
* 从数组中随机挑选 size 个
* @param size
* @return
*/
private List<ActivitiesEnum> pickRandom(List<ActivitiesEnum> _activities, Integer size) {
List<ActivitiesEnum> result = new ArrayList<ActivitiesEnum>();
for (ActivitiesEnum ae : _activities) {
result.add(ae);
}
for (int i = 0; i < _activities.size() - size; i++) {
int index = random(iday, i) % result.size();
result.remove(index);
}
return result;
}
/**
* 从数组中随机挑选 size 个
* @param size
* @return
*/
private List<String> pickRandomDrinks(Integer size) {
List<String> result = new ArrayList<String>(Arrays.asList(drinks));
for (int i = 0; i < drinks.length - size; i++) {
int index = random(iday, i) % result.size();
result.remove(index);
}
return result;
}
// 枚举 中随机挑选 size 个
public List<Map<String, String>> pickRandomActivity(List<ActivitiesEnum> _activities, Integer size) {
List<ActivitiesEnum> picked_events = pickRandom(_activities, size);
List<Map<String, String>> mapList = new ArrayList<Map<String,String>>();
for (int i = 0; i < picked_events.size(); i++) {
mapList.add(parse(picked_events.get(i)));
}
return mapList;
}
/**
* 解析占位符并替换成随机内容
* @param ae
* @return
*/
public Map<String, String> parse(ActivitiesEnum ae) {
Map<String, String> map = new HashMap<String, String>();
map.put("name", ae.getName());
map.put("good", ae.getGood());
map.put("bad", ae.getBad());
if(map.get("name").indexOf("%v") != -1) {
map.put("name", map.get("name").replaceAll("%v", varNames[random(iday, 12) % varNames.length]));
}
if(map.get("name").indexOf("%t") != -1) {
map.put("name", map.get("name").replaceAll("%t", tools[random(iday, 11) % tools.length]));
}
if(map.get("name").indexOf("%t") != -1) {
map.put("name", map.get("name").replaceAll("%l", (random(iday, 12) % 247 + 30) + ""));
}
return map;
}
public Integer [] pickSpecials () {
Integer [] specialSize = new Integer[]{0, 0};
for (SpecialsEnum se : SpecialsEnum.values()) {
if(iday == se.getDate()){
if(se.getType().equals("good")){
specialSize[0]++;
}else{
specialSize[1]++;
}
System.out.println("name:" + se.getName() + " description:" + se.getDescription());
}
}
return specialSize;
}
public ProgrammerCalendar() {
SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd");
try {
iday = Integer.parseInt(sdf.format(new Date()));
} catch (Exception e) {
e.printStackTrace();//懒得引用log了
}
}
public static void main(String[] args) {
ProgrammerCalendar hl = new ProgrammerCalendar();
System.out.println("今天是：" + hl.getTodayString());
System.out.println("座位朝向：面向" + hl.directions[hl.random(hl.getIday(), 2) % hl.getDirections().length] + "写程序，BUG 最少。");
System.out.println("今日宜饮：" + StringUtils.join(hl.pickRandomDrinks(2), ","));
System.out.println("女神亲近指数：" + hl.star(hl.random(hl.getIday(), 6) % 5 + 1));
hl.pickTodaysLuck();
}
}运行结果：
今天是：今天是2021年4月15日 星期四
座位朝向：面向西方写程序，BUG 最少。
今日宜饮：可乐,果汁
女神亲近指数：★★☆☆☆
宜：
锻炼一下身体
晚上加班:晚上是程序员精神最好的时候
浏览成人网站:重拾对生活的信心
不宜：
打DOTA:你会被虐的很惨
上AB站:满屏兄贵亮瞎你的眼
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