What is HashMap? HashMap is work on the hashing principle. HashMap is a data structure which allows us to store object and retrieve an object in constant time O(1) via a key. Key is an important factor that we use to get and put data in a data structure like…
JVM Architecture is the big process through which java code is run. From start to end, *.java to *.class all the analysis, interpretation, optimization, execution, etc. All these activities come under JVM architecture. We have three parts which we already know JDK, JRE, JVM. But we discussed JDK and JRE…
What is ThreadPoolExecutor? This class is an implementation of the ExecutorService interface via AbstractExecutorService. This class executes tasks of type either Callable or Runnable using threads and threads that are already created and managed through ThreadPool. What is ThreadPool? ThreadPool: A pool of worker-threads is waiting for some task to…