Difference Between Wait And Sleep In Java
distinguishing between wait() and sleep() methods in Java
Difference Between Wait And Sleep In Java
In Java, both the wait() and sleep() methods are used to pause the execution of a thread, but there are key differences between the two. The wait() method is used in synchronization and is typically called on an object's monitor within a synchronized block. It causes the calling thread to wait until another thread notifies it through the notify() or notifyAll() methods. On the other hand, the sleep() method is used to pause the execution of a thread for a specified amount of time, without releasing any locks. It is a static method that belongs to the Thread class and does not require a synchronized block._wait() is used for inter-thread communication, while sleep() is used for pausing the execution of a thread for a specific duration.
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1 - The main difference between wait and sleep in Java lies in their usage within a synchronized block.
2) Calling the wait() method on an object causes the current thread to release the lock on the object and enter a waiting state until another thread notifies it using the notify() or notifyAll() method.
3) The sleep() method, on the other hand, is a static method in the Thread class that causes the current thread to pause execution for a specified amount of time, during which it does not release any locks.
4) wait() is intended for inter thread communication and synchronization, allowing threads to coordinate their actions, while sleep() is used mainly for introducing a delay in the execution of a single thread.
5) Using wait() without proper synchronization may lead to IllegalMonitorStateException, whereas sleep() can be used without concerns about synchronization.
6) When using wait(), a thread must own the lock of the object on which it is calling wait(), whereas sleep() does not require any lock ownership.
7) wait() is used with a timeout parameter to specify the maximum time a thread will wait, whereas sleep() takes the exact time duration as a parameter.
8) Unlike sleep(), calling wait() inside a non synchronized context will result in a compile time error.
9) The wait() method releases the lock and enters the wait set, while sleep() retains the lock on the object.
10) Overall, wait() and sleep() serve distinct purposes in Java programming, with wait() focused on inter thread communication and synchronization, while sleep() is primarily for delaying the execution of a single thread.
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