Java实现中英文词典功能
本文实例为大家分享了Java实现中英文词典功能的具体代码，供大家参考，具体内容如下
功能如下：
1、可以向词典中增加中英文单词，并提供修改和删除功能
2、完成输入中文查询英文的功能，如果没有提示没有查到
3、完成输入英文查询中文的功能，如果没有提示没有查到
4、功能的选择使用文字菜单完成，每个操作要求有明确的操作提示和结果演示，以及结果演示的暂停。
代码实现：
import java.util.Objects;
import java.util.HashMap;
import java.util.Scanner;
//单词模型类
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;
}
@Override
public 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);
}
@Override
public 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>();
}
//添加中文单词
public void addChWord() {
System.out.println("请输入单词名称");
Scanner sc = new Scanner(System.in);
String name = sc.next();
if (ch.containsKey(name)) {
System.out.println("这个单词已存在，请重试");
} else {
System.out.println("请输入这个单词的英文翻译");
String meaning = sc.next();
ch.put(name, new Word(name, meaning));
System.out.println("添加成功");
}
backMenu();
}
//添加英文单词
public void addEnWord() {
System.out.println("请输入单词名称");
Scanner sc = new Scanner(System.in);
String name = sc.next();
if (en.containsKey(name)) {
System.out.println("这个单词已存在，请重试");
} else {
System.out.println("请输入这个单词的中文翻译");
String meaning = sc.next();
en.put(name, new Word(name, meaning));
System.out.println("添加成功");
}
backMenu();
}
//改变中文单词
public void changeCh() {
System.out.println("请输入您要修改的中文单词");
Scanner sc = new Scanner(System.in);
String name = sc.next();
boolean flag = ch.containsKey(name);
if (!flag) {
System.out.println("您要修改的中文单词不存在，请输入任意字母返回");
sc.next();
} else {
System.out.println("请输入修改后的内容");
String meaning = sc.next();
ch.put(name, new Word(name, meaning));
System.out.println("修改成功");
}
backMenu();
}
//改变英文单词
public void changeEn() {
System.out.println("请输入您要修改的英文单词");
Scanner sc = new Scanner(System.in);
String name = sc.next();
boolean flag = en.containsKey(name);
if (!flag) {
System.out.println("您要修改的英文单词不存在，请输入任意字母返回");
sc.next();
} else {
System.out.println("请输入修改后的内容");
String meaning = sc.next();
en.put(name, new Word(name, meaning));
System.out.println("修改成功");
}
backMenu();
}
//删除中文单词
public void deleteCh() {
System.out.println("请输入您要删除的中文单词");
Scanner sc = new Scanner(System.in);
String name = sc.next();
if (ch.remove(name) != null)
System.out.println("删除成功");
else
System.out.println("您要删除的单词不存在，请重试");
backMenu();
}
//删除英文单词
public void deleteEn() {
System.out.println("请输入您要删除的英文单词");
Scanner sc = new Scanner(System.in);
String name = sc.next();
if (en.remove(name) != null)
System.out.println("删除成功");
else
System.out.println("您要删除的单词不存在，请重试");
backMenu();
}
//查询中文单词的翻译
public void seachEn() {
System.out.println("请输入您要查询的中文单词");
Scanner sc = new Scanner(System.in);
String name = sc.next();
boolean flag = ch.containsKey(name);
if (!flag) {
System.out.println("您要查询的中文单词不存在,请重试");
} else {
Word word = ch.get(name);
System.out.println(name + "的英文翻译是" + word.getMeaning());
}
backMenu();
}
//查询英文单词的中文翻译
public void seachCh() {
System.out.println("请输入您要查询的英文单词");
Scanner sc = new Scanner(System.in);
String name = sc.next();
boolean flag = en.containsKey(name);
if (!flag) {
System.out.println("您要查询的英文单词不存在,请重试");
} else {
Word word = en.get(name);
System.out.println(name + "的中文翻译是" + word.getMeaning());
}
backMenu();
}
public void backMenu() {
System.out.println("请输入9返回菜单");
Scanner sc = new Scanner(System.in);
sc.next();
System.out.println();
}
}
//测试类
public class MainClass {
public static void main(String[] args) {
Dictionary myDictionary = new Dictionary();
while (true) {
System.out.println("————————欢迎使用中英文词典系统————————");
System.out.println("1.添加中文单词");
System.out.println("2.添加英文单词");
System.out.println("3.修改中文单词");
System.out.println("4.修改英文单词");
System.out.println("5.删除中文单词");
System.out.println("6.删除英文单词");
System.out.println("7.查询中文单词翻译");
System.out.println("8.查询英文单词翻译");
System.out.println("9.退出系统");
System.out.println("请输入你的选择：");
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("谢谢使用");
System.exit(0);
}
}
}
}
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