Scott Adamson :
I am trying to override the equals method but am faced with a 'Operator && cannot be applied to 'boolean','int'' error, which seems to be caused by the last line. My belief is that pages == otherEntry.pages returns an int, but why?
@Override
public boolean equals (Object that) {
if (this == that) return true;
if (!(that instanceof BookEntry)) return false;
BookEntry otherEntry = (BookEntry) that;
return title.equals(otherEntry.title) &&
Arrays.equals(authors, otherEntry.authors) &&
Float.compare(otherEntry.rating, rating) &&
ISBN.equals(otherEntry.ISBN) &&
pages == otherEntry.pages;
}
Eran :
Float.compare(otherEntry.rating, rating) returns an int.
Change it to Float.compare(otherEntry.rating, rating) == 0 if you want to determine if the two floats are equal according to the ordering defined by Float.compare().
The return statement would become
return title.equals(otherEntry.title) &&
Arrays.equals(authors, otherEntry.authors) &&
Float.compare(otherEntry.rating, rating) == 0 &&
ISBN.equals(otherEntry.ISBN) &&
pages == otherEntry.pages;
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