試題詳解

Which statement is true?
(A) Compilation fails.
(B) An exception is thrown at runtime.
(C) Synchronizing the run() method would make the class thread-safe.
(D) The data in variable "x" are protected from concurrent access problems.
(E) Declaring the doThings() method as static would make the class thread-safe. 

(AB) Wrapping the statements within doThings() in a synchronized(new Object()){} block would make the class thread-safe.