Synchronization query

[Manikandan Swaminathan]

How can we implement synchronization in a multi-threaded environment without using the "synchronized" keyowrd?

Request to supplement your answers with code examples.

Thanks in advance.

[Chris Hurst]

You can do it but why would you want to ? your reason drives the selection of the alternative, but the fact you have to ask the questions tends to suggest you would be better of using synchronized.

e.g. look at Java ReadWriteLock

[Henry Wong]

Chris Hurst wrote:
e.g. look at Java ReadWriteLock

The java.util.concurrent.locks.ReentrantLock class is probably an implementation that is better to use -- as alternative to synchronization.

Henry

[Istvan Kovacs]

"synchronization" is a broad term. The solution depends on what you need.
Implicit locks (such as those mentioned by previous posters), Semaphore, Latch, Barrier are all synchronization devices. A Queue (BlockingQueue) is also a way to synchronize operations.
Check java.util.concurrent, and/or read Java Concurrency in Practice.