I'm trying to sort an array of book objects alphabetically by title using Collections.sort
, when I run this, it doesn't seem to give me any way to output the data.
public static void SortBooks(Scanner sc, ArrayList<Book> books) {
Collections.sort(books, new Comparator<Book>() {
public int compare(Book q1, Book q2) {
return q1.getBookTitle().compareToIgnoreCase(q2.getBookTitle());
}
});
}
Would anybody have a clue on how I could output this data to the console using System.out.println()
?
For completeness:
public static void SortBooks(Scanner sc, ArrayList<Book> books) {
Collections.sort(books, new Comparator<Book>() {
public int compare(Book q1, Book q2) {
// don't put it in here
return q1.getBookTitle().compareToIgnoreCase(q2.getBookTitle());
}
});
// put it here, after the sort
System.out.println(books);
}
You can, of course, produce fancier output by iterating over books and printing each member in some particular way.
for ( Book b : books ) {
System.out.println("Book: " + b.getBookTitle());
}
or similar.
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