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|Java - Interview Questions and Answers|
|Ans. The goal of a synchronised block is to achieve mutual exclusion i.e at one time, the segment of the code 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  synchronized block   synchronized   synchronization   multithreading   threads   mutual exclusion   concurrency Asked in 4 Companies intermediate   frequent|
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| Which of the following combination of keywords is illegal in Java ? |
a. static and transient
b. transient and final
c. static and synchronized
d. abstract and final
|How does volatile affect code optimization by compiler?|
| Which keyword is used to provide explicit access of a code block to single thread ? |
|Can constructors be synchronized in Java ?|
|Difference between Vector and ArrayList ?|
|Why HashTable has been deprecated ?|
|What is an object's lock and which object's have locks?|
|What is Volatile keyword used for ?|
|Difference between StringBuffer and StringBuilder ?|
|What is a Property class ?|