Instruct: Classify the given review into positive or negative sentiment.
Query: lacking info

hey guys i passed the java programmer 1.4 exam last week ..this book was very poor in the following parts-garbage collection:there was alot of questions about that part in the exam which is not covered in the book-threads:the threads chapter in the book is very confusing and was not clear ..and the exam asked alot of questions that were not covered in the text.-Collection framework:the book does not cover this part well and the exam asks alot of questions about this part..other parts in the book are good what i recommened that you need another reference and this book is not enoughGood Luck !!Saedd