Is it possible to change the priority of garbage Collector thread?

Question

Java garbage collector runs with priority 1, due to which it is not guaranteed that System.gc() will actually execute if called.

Is there any way to change its prio

Answer 1

Garbage Collector is an independent thread (as reminded by Tom Hawtin in a comment, not even necessarily a single thread) and is on a priority which is decided by the Java Virtual Machine. This means you can't force garbage collection. Calling System.gc() tells the runtime environment that "now" might be a good time to run the GC but garbage collection is actually not guaranteed to be done immediately.