用Java 写出简单代码包括古诗词朝代管理，古诗词题材管理，和古诗词的增删改查

好的，以下是简单的Java代码，实现古诗词朝代管理、古诗词题材管理、和古诗词的增删改查功能：

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Scanner;

public class PoemManagementSystem {

    private Map<String, List<String>> dynastyMap; // 朝代和古诗词列表的映射
    private Map<String, List<String>> themeMap; // 题材和古诗词列表的映射

    public PoemManagementSystem() {
        dynastyMap = new HashMap<>();
        themeMap = new HashMap<>();
    }

    // 添加古诗词
    public void addPoem(String dynasty, String theme, String poem) {
        List<String> dynastyList = dynastyMap.getOrDefault(dynasty, new ArrayList<>());
        List<String> themeList = themeMap.getOrDefault(theme, new ArrayList<>());
        dynastyList.add(poem);
        themeList.add(poem);
        dynastyMap.put(dynasty, dynastyList);
        themeMap.put(theme, themeList);
        System.out.println("成功添加古诗词：" + poem);
    }

    // 删除古诗词
    public void deletePoem(String poem) {
        for (List<String> poemList : dynastyMap.values()) {
            if (poemList.remove(poem)) {
                System.out.println("成功删除古诗词：" + poem);
                break;
            }
        }
        for (List<String> poemList : themeMap.values()) {
            if (poemList.remove(poem)) {
                break;
            }
        }
    }

    // 修改古诗词
    public void updatePoem(String oldPoem, String newPoem) {
        for (List<String> poemList : dynastyMap.values()) {
            int index = poemList.indexOf(oldPoem);
            if (index != -1) {
                poemList.set(index, newPoem);
                break;
            }
        }
        for (List<String> poemList : themeMap.values()) {
            int index = poemList.indexOf(oldPoem);
            if (index != -1) {
                poemList.set(index, newPoem);
                break;
            }
        }
        System.out.println("成功将古诗词 " + oldPoem + " 修改为 " + newPoem);
    }

    // 根据朝代查询古诗词
    public void queryPoemByDynasty(String dynasty) {
        List<String> poemList = dynastyMap.getOrDefault(dynasty, new ArrayList<>());
        if (poemList.isEmpty()) {
            System.out.println("没有查询到 " + dynasty + " 的古诗词");
        } else {
            System.out.println(dynasty + " 的古诗词有：");
            for (String poem : poemList) {
                System.out.println(poem);
            }
        }
    }

    // 根据题材查询古诗词
    public void queryPoemByTheme(String theme) {
        List<String> poemList = themeMap.getOrDefault(theme, new ArrayList<>());
        if (poemList.isEmpty()) {
            System.out.println("没有查询到 " + theme + " 的古诗词");
        } else {
            System.out.println(theme + " 的古诗词有：");
            for (String poem : poemList) {
                System.out.println(poem);
            }
        }
    }

    public static void main(String[] args) {
        PoemManagementSystem pms = new PoemManagementSystem();
        Scanner scanner = new Scanner(System.in);
        while (true) {
            System.out.println("请选择操作：1.添加古诗词 2.删除古诗词 3.修改古诗词 4.查询古诗词");
            int op = scanner.nextInt();
            scanner.nextLine();
            switch (op) {
                case 1:
                    System.out.println("请输入古诗词所属朝代：");
                    String dynasty = scanner.nextLine();
                    System.out.println("请输入古诗词所属题材：");
                    String theme = scanner.nextLine();
                    System.out.println("请输入古诗词：");
                    String poem = scanner.nextLine();
                    pms.addPoem(dynasty, theme, poem);
                    break;
                case 2:
                    System.out.println("请输入要删除的古诗词：");
                    String poemToDelete = scanner.nextLine();
                    pms.deletePoem(poemToDelete);
                    break;
                case 3:
                    System.out.println("请输入要修改的古诗词：");
                    String oldPoem = scanner.nextLine();
                    System.out.println("请输入修改后的古诗词：");
                    String newPoem = scanner.nextLine();
                    pms.updatePoem(oldPoem, newPoem);
                    break;
                case 4:
                    System.out.println("请选择查询方式：1.按朝代查询 2.按题材查询");
                    int queryOp = scanner.nextInt();
                    scanner.nextLine();
                    switch (queryOp) {
                        case 1:
                            System.out.println("请输入要查询的朝代：");
                            String dynastyToQuery = scanner.nextLine();
                            pms.queryPoemByDynasty(dynastyToQuery);
                            break;
                        case 2:
                            System.out.println("请输入要查询的题材：");
                            String themeToQuery = scanner.nextLine();
                            pms.queryPoemByTheme(themeToQuery);
                            break;
                        default:
                            System.out.println("无效的操作");
                    }
                    break;
                default:
                    System.out.println("无效的操作");
            }
        }
    }

}