Declaring a method as synchronized means that you are committing to your class using a particular locking mechanism. If a more effective locking mechanism comes along (as has happened in Java 5), you can't use it without changing the definition of your API. Generally speaking, it's usually ...
synchronized block acquires a lock in the object only between parentheses after the synchronized keyword. This means that no other thread can acquire a lock on the locked object until the synchronized block exits. But other threads can access the rest of the code of the method....
Static Synchronization in Java Static synchronization is applied to static methods or blocks. When a method or block is declared as static and synchronized, it means the lock is acquired on the class object itself (represented by Class.class). Only one thread can acquire the lock on the class...
If one thread enters the monitor, it means that the thread has acquired a lock, and all other threads must wait till that thread exits the monitor. If required, a thread that owns the monitor can re-enter the same monitor. Synchronizing code There is no class called Monitor in Java. ...
If you choose a different operation, you can compute maximum or minimum. In general, the operation must be associative and commutative. That means that the final result must be independent of the order in which the intermediate values were combined. ...
Synchronizing also crucially means that the result of x calculated in one thread is visible to other threads calling the method: see below. It is also possible to synchronize any arbitrary block of code on any given object: for more details, see the section on the Java synchronized keyword. ...
java synchronized keyword is re-entrant in nature it means if a java synchronized method calls another synchronized method which requires same lock then current thread which is holding lock can enter into that method without acquiring lock.
In practice, a slow sync means that the client sends all its data to the server and the server does a field-by-field analysis, comparing its own data with that sent by the client. After the analysis, the server returns all the modification information to the client. In turn, the client...
If the value for the publication_name is NULL, it means all publications in the database. This string is the same as the client_name_template parameter of the Consolidator Manager CreatePublication method. In most cases, you will use NULL for this parameter. For more information, see Section...
With no means of serializing access—that is, allowing access to only one thread at a time —to a critical code section, you can’t prevent race conditions or inconsistencies. Fortunately, Java provides a way to serialize thread access: through its synchronization mechanism. Note: Of Java’s ...