What other problems can arise in multithreading?

In multithreaded programming in Java, the following issues can arise in addition to classic data races and deadlocks:

• Starvation — when one or more threads constantly do not get access to resources due to priorities or improper scheduling.
• Livelock — a situation where threads actively interact, trying to avoid blocking, but cannot make progress.
• Unpredictable behavior due to lack of visibility of changes (Visibility issues) — without proper synchronization, changes in one thread may not be visible to others.
• Problems with atomicity of operations — for example, incrementing a variable is not atomic without using synchronized or atomic classes.
• Reordering issues — the compiler or processor may change the order of instructions, affecting correctness without volatile or synchronized.
• Performance issues — excessive synchronization can lead to reduced parallelism.
• Errors when using wait/notify — improper use can lead to missed notifications or eternal waiting.

To address these issues, it is important to use proper synchronization mechanisms, atomic classes from java.util.concurrent.atomic, high-level constructs from java.util.concurrent, and to carefully design thread logic.