```
@Documented
@Retention(SOURCE)
public @interface Synchronized
```
Indicates that a method or class is thread-safe and that thread safety has been provided using the Java keyword synchronized. Calling synchronized methods from multithreaded code should generally be avoided because there is a performance penalty incurred to enforce the locking mechanism. However, it may be an acceptable solution when the work being performed in parallel is more costly than enforcing the synchronized lock.

Annotation Type Synchronized