Thread safety of assignment statements in java
is int a = 1 thread safe? Is
int b = 2;
a = b thread safe?

Object c = new Object () is thread safe?

the answer I found in my blog is that the first thread is safe, the second doesn"t know, and the third thread is not safe.

here are some explanations I found:
int I = 1;
is thread-safe because this statement will be translated into an instruction iconst_1, there is no thread-safety problem;

/ / A c = new A ();
this operation is divided into three parts
1. Create a symbolic reference to an in the stack
2. Create an An object in the heap
3. Point a to A
, so this assignment statement is not thread-safe