如何按字母表对Java中的对象数组进行排序[关闭]

Question

我有类库

public class Books extends Library {
  String regNumber
  String author;
  String name;
  int yearOfPublishing;
  String publishingHouse;
  int numberOfPages;

  public Books(String regNumber, String author, String name, int yearOfPublishing,
      String publishingHouse, int numberOfPages) {
    this.regNumber = regNumber;
    this.author = author;
    this.name = name;
    this.yearOfPublishing = yearOfPublishing;
    this.publishingHouse = publishingHouse;
    this.numberOfPages = numberOfPages;
  }

如何按字母顺序列出作者姓氏的书籍？

Answer 1

首先，您应该有一个Book class 用于个别书籍。假设您的图书馆是一个书籍列表，您可以这样做。

List<Book> sortedLibrary = library.stream()
                .sorted(Comparator.comparing(book -> book.author))
                .collect(Collectors.toList());

由于没有提供有关 author 姓名字段的详细信息，它会按整个字段排序，无论是名字、姓氏还是两个名字。

如果您想对它们进行适当的排序，那么一种更简洁的方法会是。

library.sort(Comparator.comparing(book->book.author));