java - volatile keyword
- by Tiyoal
Say I have two threads and an object. One thread assigns the object:
public void assign(MyObject o) {
myObject = o;
}
Another thread uses the object:
public void use() {
myObject.use();
}
Does the variable myObject have to be declared as volatile? I am trying to understand when to use volatile and when not, and this is puzzling me. Is it possible that the second thread keeps a reference to an old object in its local memory cache? If not, why not?
Thanks a lot.
