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 …

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 …

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 …

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 …

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 …

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 …

5 You can: Declare both run and doJob synchronized. This will use this as lock; Declare list as final and synchronize on it. This will use list as lock. Declaring lock field as final is good …

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.

Jul 6, 2012 · Returns a synchronized (thread-safe) list backed by the specified list. In order to guarantee serial access, it is critical that all access to the backing list is accomplished through …

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 …