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|Java - Interview Questions and Answers|
|Usually asked only to fresh graduates.|
|Ans. In preemptive scheduling, highest priority task continues execution till it enters a not running state or a higher priority task comes into existence. In time slicing, the task continues its execution for a predefined period of time and reenters the pool of ready tasks.|
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|Like Discuss Correct / Improve  operating system   scheduling   threads   multi threading   rare|
| Which keyword is used to provide explicit access of a code block to single thread ? |
|Explain multithreading in Java ?|
|What is a Deadlock ?|
|Explain Thread States ?|
|Why do we need Thread class even in case we execute thread using runnable interface ?|
|What is an object's lock and which object's have locks?|
|Different ways of implementing Threads in Java ?|
|Difference between Process and Thread ?|
|What is race condition ?|