Synchronize to ensure that reference to immutable object will be seen by another thread

Question

I was studying this to understand the behavior of final fields in the new JMM (5 onwards). This concept is clear: guaranteed visibility of initialized final fields to all t

Answer 1

Making all the fields final will ensure they are published to other threads properly. That comment is probably referring to the following scenario:

private myField;

public void createSomething()
{
    myField = new MyImmutableClass();
}

In this case you still need proper synchronization around any access to myField, or other threads might never see the newly created object.