有必要冲钱吗

Hi there You're investing into your own programming knowledge and experience. In our Java course, you have an opportunity to pass the introductory level 0 and the Games section for free. In order to continue learning one of our subscriptions is required.  If you managed to earn enough Dark Matter units for solving tasks on Level 0, then you will be able to unlock new lectures on levels 1-2, until you run out of the Dark Matter units. However, the tasks from level 1 and onwards will be unavailable without a subscription.