1) sleep() method is called on a Thread while wait() method is called on object
2) wait() method is called from a synchronized method or block while sleep() has no such restrictions.If you call wait method without synchronization, it will throw IllegalMonitorStateException in Java
3) sleep() is a static method of Thread class and it is applicable to current running thread while wait() is an instance method of Object class.
4) When a sleep() method is called on a thread then it immediately goes into a runnable state while in case of wait() it is required to call notify() or notifyAll() method in order to release a lock and make a thread enter into runnable state.
5) Thread in a waiting state can be released by calling a notify() or notifyAll() method while sleep() does not have such feature. A thread in sleep() mode remains silent for the specific amount of time.
2) wait() method is called from a synchronized method or block while sleep() has no such restrictions.If you call wait method without synchronization, it will throw IllegalMonitorStateException in Java
3) sleep() is a static method of Thread class and it is applicable to current running thread while wait() is an instance method of Object class.
4) When a sleep() method is called on a thread then it immediately goes into a runnable state while in case of wait() it is required to call notify() or notifyAll() method in order to release a lock and make a thread enter into runnable state.
5) Thread in a waiting state can be released by calling a notify() or notifyAll() method while sleep() does not have such feature. A thread in sleep() mode remains silent for the specific amount of time.
| Other references on threads |
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| Difference between sleep and wait in java |
| Lifecycle of thread |
| Difference between yield and sleep in java |
| Thread creation in java |
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