Does each object require a separate synchronization tool to prevent conflicts?

Not every object necessarily needs a separate synchronization mechanism. Synchronization tools (like locks) are used to protect shared resources or critical sections of code where concurrent access from multiple threads is possible.

If an object is used only by one thread or is immutable, synchronization is not needed. When multiple threads can modify the object's state simultaneously, synchronization mechanisms such as:

• synchronized blocks or methods in Java
• ReentrantLock
• other primitives from java.util.concurrent

are required. Thus, synchronization is needed not for every object, but for those with concurrent access and potential conflicts.