Java doesn't work like this, java.lang.String and java.lang.StringBuffer aren't related through inheritance and when you call StringBuffer.toString () a brand new String is created with a copy of ...

Immutable objects are highly desirable . Because an immutable object's state cannot be changed, they are particularly useful in concurrent environments . Immutable options can simplify code and ...

Why immutability? One of the most difficult things about writing concurrent programs is deciding how to protect mutable shared state. Java provides a locking primitive, synchronized, but locking ...