Books

A Book is a title, an author, and a list of pages, each page a Component. Player#openBook displays one without the player holding or owning a book item:

player.openBook(Book.book(
        Component.text("How to Play"),  // title
        Component.text("Steve"),        // author
        Component.text("Page one"),     // page 1
        Component.text("Page two")      // page 2
));

Pages are components, so they can contain colors, hover tooltips, and click events.

WARNING

The title and author are sent as plain strings, so their components are flattened by the plain text serializer and their styling is discarded. Page components are sent unchanged.

Book items

openBook does not create an item. A book item can be built by setting the same data component:

ItemStack book = ItemStack.builder(Material.WRITTEN_BOOK)
        .set(DataComponents.WRITTEN_BOOK_CONTENT, new WrittenBookContent(...))
        .build();