Whizlabs offers both the online course and practice papers for Java; both of these are effective as well as helpful to pass the actual certification exam. It totally depends on you, what you need to pass the exam.
If you have done complete syllabus and covered all the objectives of the certification exam by your study, then you can only purchase practice papers. The practice papers will make you confident about your preparation as they are just like the actual exam including timer.
But if you are not done with the preparation and need someone to teach you various aspects and topics in the syllabus of the actual certification exam, then we will suggest you to first purchase the online course and then take practice papers to check your preparation level and be confident for the actual certification exam.
You can also try the trial version i.e. free course and practice paper to decide what can be more helpful to you in the preparation of certification exam. Moreover, whatever you purchase from the Whizlabs, online course or the practice papers, the team at Whizlabs will assist you in everything from certification exam syllabus to the exam date.