Library Management System Project In Java With Source Code -

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public Member findMemberById(int id) return members.stream().filter(m -> m.getMemberId() == id).findFirst().orElse(null); Library Management System Project In Java With Source Code

package model; public class Member private int memberId; private String name; private String email; private String phone; Share it with your fellow developers and leave

public class TransactionService private Map<Integer, Integer> issuedBooks = new HashMap<>(); // bookId -> memberId m.getMemberId() == id).findFirst().orElse(null)

public Book(int id, String title, String author, String genre, int quantity) this.id = id; this.title = title; this.author = author; this.genre = genre; this.quantity = quantity;

public void showIssuedBooks() if (issuedBooks.isEmpty()) System.out.println("No books currently issued."); return; System.out.println("\nIssued Books (Book ID -> Member ID):"); for (Map.Entry<Integer, Integer> entry : issuedBooks.entrySet()) Book b = libraryService.findBookById(entry.getKey()); Member m = libraryService.findMemberById(entry.getValue()); System.out.println("Book: " + (b != null ? b.getTitle() : "Unknown") + "