import java.util.ArrayList;/*** 存放单词的实体类，为附体类，需要运行mymain 主入口*/
public class Entity {private String ecglish;//英语单词private String chaina;//中文解释private String day; //属于第几天的单词private ArrayList list = new ArrayList();public ArrayList getList() {return list;}public void setList(ArrayList list) {this.list = list;}public Entity(String ecglish, String chaina, String day) {this.ecglish = ecglish;this.chaina = chaina;this.day = day;}public Entity() {}@Overridepublic String toString() {return "Entity{" +"ecglish='" + ecglish + '\'' +", chaina='" + chaina + '\'' +", day='" + day + '\'' +'}';}public String getDay() {return day;}public void setDay(String day) {this.day = day;}public String getEcglish() {return ecglish;}public void setEcglish(String ecglish) {this.ecglish = ecglish;}public String getChaina() {return chaina;}public void setChaina(String chaina) {this.chaina = chaina;}
}

import java.util.ArrayList;
import java.util.List;
import java.util.Random;
import java.util.Scanner;/*
说明：首先添加需要背诵的单词
1.******添加单词******
2.******随机根据中文输入单词******  程序主入口
3.******主菜单******
4.******查看所有单词*******/
public class MyMain {private List<Entity> list = new ArrayList<Entity>();public static void main(String[] args) {MyMain arrayDemo01 = new MyMain();arrayDemo01.myMain();}//3.查看所有单词=========================================================private void myFor() {if (list.size() > 0) {myflash();//刷新控制台System.out.println("-------------------------------------------------------------------");for (Entity entity : list) {System.out.println("\t\t\t" + entity.getEcglish() + "\t\t\t" + entity.getChaina());}System.out.println("-------------------------------------------------------------------");myMain();} else {//没有单词时调用此方法myReturn();}}//没有单词时调用的方法。=========================================================private void myReturn() {myflash();//刷新控制台System.out.println("\t\t\t当前单词条数为【 " + list.size() + " 】请先添加单词\t\t\t");myMain();//跳到主菜单}//根据提示，默写单词=========================================================private void ranDomChina() {if (list.size() > 0) {int count = 0;// 记录默写成功的单词数量int over = 0;// 统计默写错误的单词数量myflash();//刷新Scanner scanner = new Scanner(System.in);//生成一个而随机数，最大为list的存储个数.取得一个当前默写需要的词组Random random = new Random();int r = random.nextInt(list.size());String english = list.get(r).getEcglish();String china = list.get(r).getChaina();//拼接字符串提示String st;while (true) {st = "请输入：【" + china + "】 对应的单词" + "  当前单词总数量:【" + list.size() + "】";st += "  默写成功总次数:【" + count + "】" + "  失败次数【" + over + "】";st += "  【0:查看提示】 " + "【1:进入主界面】";System.out.println(st);String s = scanner.nextLine().trim();//trim方法，删除前后空格1if (s.equals(english)) {//输入正确====== 进行的操作====================count++;//成功+1myflash();//刷新控制台System.out.println("~~~~恭喜你，输入正确~~~~");r = random.nextInt(list.size());//输入正确之后重新生成随机数english = list.get(r).getEcglish();//重新定义英语china = list.get(r).getChaina();//重定义提示的中文} else if (s.equals("0")) {myflash();System.out.println("提示:\t【" + english + "】\t【" + china+"】");} else if (s.equals("1")) {break;} else {myflash();//刷新控制台over++;//默写失败+1System.out.println("输入的【" + s + "】错误，请重新输入:");}}//whyl循环结束myflash();//当跳出while循环时，刷新myReturn();//当跳出while循环时，进入主菜单} else {//没有单词时调用此方法myflash();myReturn();}}//此方法用于刷新控制台=========================================================private void myflash() {for (int i = 0; i < 25; i++) {System.out.println();}}//添加方法，调用的副方法=========================================================private void add01() {System.out.println("不能输入空字符串");System.out.println();System.out.println();}//遍历list 不能重复输入单词 ,返回true 有重复，返回false 没有重复private boolean englishEquals(String english) {for (Entity entity : list) {if (english.equals(entity.getEcglish())) {return true;}}return false;}//添加单词=========================================================private void add() {myflash();//刷新控制台Scanner scanner = new Scanner(System.in);while (true) {System.out.println("------------------------------------------------");System.out.println("请输入需要添加的英语单词：      【0.退出】");String english = scanner.nextLine().trim();//trim方法，删除前后空格1if (english.equals("0")) {break;} else if ("".equals(english)) {add01();continue;}//判断是否重复输入单词if (englishEquals(english)) {System.out.println("请勿输入重复的单词：" + english);continue;}System.out.println("请输入需要添加对应的中文：      【0.退出】");String china = scanner.nextLine().trim();//trim方法，删除前后空格1if (china.equals("0")) {break;} else if ("".equals(china)) {add01();continue;}Entity entity = new Entity();entity.setEcglish(english);entity.setChaina(china);list.add(entity);System.out.println("成功添加，当前条数：【" + list.size() + "】");System.out.println("------------------------------------------------");System.out.println();System.out.println();System.out.println();}myMain();}/*** 主菜单=========================================================*/private void myMain() {System.out.println("(　 ´-ω ･)▄︻┻┳══━一(　 ´-ω ･)▄︻┻┳══━一(　 ´-ω ･)▄︻┻┳══━一");System.out.println();System.out.println("\t\t 【1.添加单词】");System.out.println("\t\t 【2.默写单词】");System.out.println("\t\t 【3.查看所有单词】");System.out.println("\t\t 【请输入选择:】");Scanner scanner = new Scanner(System.in);String s = scanner.nextLine().trim();//trim方法，删除前后空格1switch (s) {case "1"://"1.******添加单词******"add();break;case "2"://"2.******默写单词******"ranDomChina();break;case "3"://"3.******查看所有单词******"myFor();break;default:myflash();//刷新控制台System.out.println("！！！！！！！！！！！！！非法输入！！！！！！！！！！！！！");myMain();//调用本方法，重新开始主菜单}}
}