Jul 6, 2009 · I have some questions regarding the usage and significance of the synchronized keyword. What is the significance of the synchronized keyword? When should methods be synchronized? …

When one thread is executing a synchronized method for an object, all other threads that invoke synchronized methods for the same object block (suspend execution) until the first thread is done …

It means that this block of code is synchronized meaning no more than one thread will be able to access the code inside that block. Also this means you can synchronize on the current instance (obtain lock …

3 Synchronized has two effects: First, it is not possible for two invocations of synchronized methods on the same object to interleave. When one thread is executing a synchronized method for an object, all …

Aug 19, 2010 · The important semantic shared by locks a volatile variables is that they both provide Happens-Before edges (Java 1.5 and later). Entering a synchronized block, taking out a lock and …

Difference between synchronized block and synchronized method are following: synchronized block reduce scope of lock, but synchronized method's scope of lock is whole method.

For synchronized methods, the lock will be held throughout the method scope, while in the synchronized block, the lock is held only during that block scope (otherwise known as critical section).

The use of synchronized methods or statements provides access to the implicit monitor lock associated with every object, but forces all lock acquisition and release to occur in a block-structured way: when …

Jul 6, 2012 · synchronized(list) { for (Object o : list) {} } As mentioned by Peter Lawrey, CopyOnWriteArrayList can make your life easier and can provide better performance in a highly …

Dec 9, 2010 · The synchronized block implements its synchronization through a sequence of bytecode operations stored in the class file's definition of the method. So the synchronized method might …