How to implement a lock on several objects at once?

Question

Java

There are many instances of the same class, which in fact just serves as a container for components.
those. the IEntity class with the getComp(...) method, on which all sorts of POJOs are located.
The task is to implement such a lock so that you can simultaneously get a lock on 2 or more such objects ...
That is, for example, the ILock class is added with the addEntity(IEntity ent), lock/unlock methods.
Further, it is used as follows: first, objects are added on which it is necessary to simultaneously obtain a lock and the lock method is called. At the same time, if a lock on at least 1 object has already been captured, then a new lock must wait until it is released.
What ideas?

Answer 1

You create java.util.concurrent.locks.Lock , pass it to the constructor of the objects you want to lock, and try to capture it in the methods of the objects.