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Topic: Java-conceptual-questions / Level: Beginner
181. What is the difference between multithreading and multiprocessing?
182. What is the use of the join() method in Java?
183. What is the difference between sleep() and wait() in Java?
184. What is the ThreadLocal class in Java?
185. What is the Executor framework in Java?
186. What is Callable and Future in Java?
187. What is the difference between Runnable and Callable?
188. What is the difference between Executor and ExecutorService?
189. What is the ScheduledExecutorService in Java?
190. What is a singleton class in Java?
191. What is the difference between singleton and prototype design patterns?
192. What is reflection in Java?
193. What is the Class class in Java?
194. What is the Object class in Java?
195. What is the instanceof operator in Java?
196. What is the finalize() method in Java?
197. What is the default keyword in Java?
198. What is a lambda expression in Java?
199. What are functional interfaces in Java?
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