JAVA, ANDROID and other ordinary people are free to learn and use.
But like Google ANDROID, which uses JAVA API to earn huge income, why not pay patent fees?
Samsung chips are also customized by JAVA, so it is natural to pay patent fees, and technical support is certainly not free (the cost of developing and maintaining a programming language is not low), but the top of this industrial chain involves intellectual property rights, and the outside world cannot know the details unless there are major events. Even at work, you need to pay a huge amount of money to paste the Microsoft trademark to realize such problems. Many people have the impression that Microsoft products are pirated everywhere and free everywhere. However, it is overlooked that using other people's systems in shopping malls has not been authenticated by others-but how much the defendant needs to pay. There is no case in the world that is more popular with lawyers than the patent case. Sony has to honestly buy every character from Marvel Comics and dare not use it without the consent of the other party (at present, Sony has more than 900 Marvel Comics characters, and Sony movies actually have little to do with Marvel Comics or even completely subvert it).
A friend on the Internet said that Google ANDROID paid a lot of money for the patent fee of JAVA in Oracle Bone Inscriptions. Do you know that Google requires Microsoft to pay $4 billion a year in patent fees, or stop selling XBOX without paying? The final result is a settlement between the two parties, but whoever wins the case and bears the patent fee will not be known to the outside world every year (which one likes better, Microsoft or Google, is who wins the lawsuit and settles out of court, that is, one party gives up agreeing with the other party (this condition is actually the judge's final ruling figure, and out-of-court settlement only avoids the court's decision), and out-of-court settlement has never been the meaning of two friends).