Interested to Buy Any Domain ? << Click Here >> for more details...
why the sleep method does not leave the lock and wait method
leave the lock
- 4 Answers
- 8038 Views
- I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / saurabh m. chande
for wait(), we ask that thread to wait for defined period of time. So, for that defined period of time, CPU just cant sit idle instead it prefers to run another thread which is looking for acquiring a lock by CPU. If wait() don't release the lock, considering the synchronization in mind, it will not serve any purpose but CPU will wait for the defined period being just idle. Then, there is no point of implementing Threads in our application.
sleep() : User is damn sure that he wants to run the thread in sleep mode. So if he uses wait() instead of sleep, then the thread -
1. will wait for defined period of time.
2. when the time is over, thread will go into runnable state and not in running state.
3. not sure when CPU will pick up this thread for further execution.
To avoid all the 3 reasons, sleep will not leave the lock on the thread. Instead it prefers to keep the lock on the thread even if it is in sleep mode. But it is sure that, once the sleep mode is over, it is having a lock and can directly put the thread in running state without further waiting.
- Saurabh M. Chande
| Is This Answer Correct ? | 5 Yes | 0 No |
Answer / alan
Thats a very nice answer Saurabh.
makes my understanding clear about both sleep() and wait().
Which one is the best site to look for more java related
questions?
| Is This Answer Correct ? | 0 Yes | 0 No |
every class has an object lock but when you used
synchronized block or synchronized method
means to say the when you use synchronized keyword then the
object lock come in an existence without you don't get the
lock on particular object you
must know that wait()
1) what is the purpose of when you call wait on the object
which lock you get when you use synchronized block or method
then particular thread immediate leave the
lock so means to say that wait must to use when you get the
lock on the particular object without
2)its your turns to think that there is any mendotary
to call Thread.sleep() method in synchronized block
so whe there is no relation b/t sleep and Monitor(i'm saying
lock on the object)
why youthink it like that why the sleep() doesn't leave the
lock and wait() leave the lock
3) ther is no realtion between object lock and sleep
amit singh
amitsing2008@gmail.com
| Is This Answer Correct ? | 0 Yes | 2 No |
Answer / balamurugan
Wait Method have parameters as MilliSecond after that
particular time over thread start execution.So Wait Method
Leave the Lock.
But in Sleep() have no any parameter so the thread have no
clue to leave the lock . that's y sleep method does not
leave the lock the programmer need to explicitly write
another method like notify() to execute.
| Is This Answer Correct ? | 0 Yes | 4 No |
Name primitive java types.
What is the resourcebundle class?
What is transactional in java?
What is a bean class?
Write a program for the problem: the array of inetegers indicating the marks of the students is given, U have to calculate the percentile of the students aaccording to this rule: the percentile of a student is the %of no of student having marks less then him. For eg: suppose Student Marks A 12 B 60 C 80 D 71 E 30 F 45 percentile of C = 5/5 *100 = 100 (out of 5 students 5 are having marks less then him) percentile of B = 3/5*100 = 60% (out of 5, 3 have markses less then him) percentile of A = 0/5*100 = 0%.
What is flatmap in rxjs?
How do javabeans work?
What is java persistence api used for?
What about javascript? : java security
What is meant by rest api in java?
What is lambda expression in mvc?
What is the difference between deep copy and shallow copy in java
Java J2EE 
