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|Java - Interview Questions and Answers|
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|Ans. Synchronize is used to achieve mutual exclusion i.e at one time, the segment of the code, method that has been declared synchronized should be executed by single thread only and hence the lock needs to be retrieved before executing the segment and then released.|
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|Like Discuss Correct / Improve  threads  multithreading  synchronized Asked in 5 Companies basic   frequent|
| Which keyword is used to provide explicit access of a code block to single thread ? |
|Explain multithreading in Java ?|
|Can constructors be synchronized in Java ?|
|What is the difference between time slicing and preemptive scheduling ?|
|What is a Deadlock ?|
|Explain Thread States ?|
|Why do we need Thread class even in case we execute thread using runnable interface ?|
|If you need to consume messages from the queue faster, which approach will you recommend - batching or concurrency ?|
|What is an object's lock and which object's have locks?|
|Different ways of implementing Threads in Java ?|