Creating Object in a thread safety way

Question

Directly from this web site, I came across the following description about creating object thread safety.

Warning: When constructing an object that will b

Answer 1

Thread A is creating Object A, in the middle of creation object A (in first line of constructor of Object A) there is context switch. Now thread B is working, and thread B can look into object A (he had reference already). However Object A is not yet fully constructed because Thread A don't have time to finish it.