@Override
public boolean equals(Object obj) {
if (obj == null || obj.getClass() != this.getClass()) {
return false;
}
if (obj == this) {
return true;
}
EqualsBuilder builder = new EqualsBuilder();
Book other = (Book) obj;
builder
.append(this.getId(), other.getId())
.append(this.getTitle(), other.getTitle())
.append(this.getIsbn(), other.getIsbn())
.append(this.getPublishedDate(), other.getPublishedDate());
return builder.isEquals();
}
