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|Java - Interview Questions and Answers|
|Frequently asked to fresh graduates.|
|Ans. When a object invokes yield() it returns to ready state. But when an object invokes sleep() method enters to not ready state.|
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|Like Discuss Correct / Improve  java   threads   multi threading   yield   sleep   scheduling   operating system Asked in 4 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 ?|