功能如下：

可以向詞典中增加中英文單詞，并提供修改和刪除功能

完成輸入中文查詢英文的功能，如果沒有提示沒有查到

完成輸入英文查詢中文的功能，如果沒有提示沒有查到

功能的選擇使用文字菜單完成，每個操作要求有明確的操作提示和結果演示，以及結果演示的暫停。

代碼實現：

import java.util.Objects; import java.util.HashMap; import java.util.Scanner;//單詞模型類 class Word {private String name;private String meaning;public Word() {}public Word(String name, String meaning) {this.name = name;this.meaning = meaning;}public String getName() {return name;}public void setName(String name) {this.name = name;}public String getMeaning() {return meaning;}public void setMeaning(String meaning) {this.meaning = meaning;}@Overridepublic boolean equals(Object o) {if (this == o) return true;if (o == null || getClass() != o.getClass()) return false;Word word = (Word) o;return Objects.equals(name, word.name) && Objects.equals(meaning, word.meaning);}@Overridepublic int hashCode() {return Objects.hash(name, meaning);} }//CURD class Dictionary {private HashMap<String, Word> ch = null;private HashMap<String, Word> en = null;//初始化public Dictionary() {this.ch = new HashMap<String, Word>();this.en = new HashMap<String, Word>();}//添加中文單詞public void addChWord() {System.out.println("請輸入單詞名稱");Scanner sc = new Scanner(System.in);String name = sc.next();if (ch.containsKey(name)) {System.out.println("這個單詞已存在，請重試");} else {System.out.println("請輸入這個單詞的英文翻譯");String meaning = sc.next();ch.put(name, new Word(name, meaning));System.out.println("添加成功");}backMenu();}//添加英文單詞public void addEnWord() {System.out.println("請輸入單詞名稱");Scanner sc = new Scanner(System.in);String name = sc.next();if (en.containsKey(name)) {System.out.println("這個單詞已存在，請重試");} else {System.out.println("請輸入這個單詞的中文翻譯");String meaning = sc.next();en.put(name, new Word(name, meaning));System.out.println("添加成功");}backMenu();}//改變中文單詞public void changeCh() {System.out.println("請輸入您要修改的中文單詞");Scanner sc = new Scanner(System.in);String name = sc.next();boolean flag = ch.containsKey(name);if (!flag) {System.out.println("您要修改的中文單詞不存在，請重試");} else {System.out.println("請輸入修改后的內容");String meaning = sc.next();ch.put(name, new Word(name, meaning));System.out.println("修改成功");}backMenu();}//改變英文單詞public void changeEn() {System.out.println("請輸入您要修改的英文單詞");Scanner sc = new Scanner(System.in);String name = sc.next();boolean flag = en.containsKey(name);if (!flag) {System.out.println("您要修改的英文單詞不存在，請重試");} else {System.out.println("請輸入修改后的內容");String meaning = sc.next();en.put(name, new Word(name, meaning));System.out.println("修改成功");}backMenu();}//刪除中文單詞public void deleteCh() {System.out.println("請輸入您要刪除的中文單詞");Scanner sc = new Scanner(System.in);String name = sc.next();if (ch.remove(name) != null)System.out.println("刪除成功");elseSystem.out.println("您要刪除的單詞不存在，請重試");backMenu();}//刪除英文單詞public void deleteEn() {System.out.println("請輸入您要刪除的英文單詞");Scanner sc = new Scanner(System.in);String name = sc.next();if (en.remove(name) != null)System.out.println("刪除成功");elseSystem.out.println("您要刪除的單詞不存在，請重試");backMenu();}//查詢中文單詞的翻譯public void seachEn() {System.out.println("請輸入您要查詢的中文單詞");Scanner sc = new Scanner(System.in);String name = sc.next();boolean flag = ch.containsKey(name);if (!flag) {System.out.println("您要查詢的中文單詞不存在,請重試");} else {Word word = ch.get(name);System.out.println(name + "的英文翻譯是" + word.getMeaning());}backMenu();}//查詢英文單詞的中文翻譯public void seachCh() {System.out.println("請輸入您要查詢的英文單詞");Scanner sc = new Scanner(System.in);String name = sc.next();boolean flag = en.containsKey(name);if (!flag) {System.out.println("您要查詢的英文單詞不存在,請重試");} else {Word word = en.get(name);System.out.println(name + "的中文翻譯是" + word.getMeaning());}backMenu();}public void backMenu() {System.out.println("請輸入9返回菜單");Scanner sc = new Scanner(System.in);sc.next();System.out.println();} }//測試類 public class MainClass {public static void main(String[] args) {Dictionary myDictionary = new Dictionary();while (true) {System.out.println("————————歡迎使用中英文詞典系統————————");System.out.println("1.添加中文單詞");System.out.println("2.添加英文單詞");System.out.println("3.修改中文單詞");System.out.println("4.修改英文單詞");System.out.println("5.刪除中文單詞");System.out.println("6.刪除英文單詞");System.out.println("7.查詢中文單詞翻譯");System.out.println("8.查詢英文單詞翻譯");System.out.println("9.退出系統");System.out.println("請輸入你的選擇：");Scanner sc = new Scanner(System.in);int i = sc.nextInt();switch (i) {case 1:myDictionary.addChWord();break;case 2:myDictionary.addEnWord();break;case 3:myDictionary.changeCh();break;case 4:myDictionary.changeEn();break;case 5:myDictionary.deleteCh();break;case 6:myDictionary.deleteEn();break;case 7:myDictionary.seachEn();break;case 8:myDictionary.seachCh();break;case 9:System.out.println("謝謝使用");System.exit(0);}}} }

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