1 - What is Multithreading in Java? | Thread | Runnable | Almighty Java скачать в хорошем качестве

1 - What is Multithreading in Java? | Thread | Runnable | Almighty Java

#Multithreading #Thread #Runnable =================== What is Multithreading ? Multithreading in java is a process of executing multiple threads simultaneously. Thread is basically a lightweight sub-process, a smallest unit of processing. Multiprocessing and multithreading, both are used to achieve multitasking. A multi-threaded program contains two or more parts that can run concurrently and each part can handle a different task at the same time making optimal use of the available resources specially. Multithreaded programs contain two or more threads that can run concurrently. This means that a single program can perform two or more tasks simultaneously. Advantages of Multithreading The main purpose of multithreading is to provide simultaneous execution of two or more parts of a program to maximum utilize the CPU time. A multithreaded program contains two or more parts that can run concurrently. Each such part of a program called thread. Threads are lightweight sub-processes, they share the common memory space. In Multithreaded environment, programs that are benefited from multithreading, utilize the maximum CPU time so that the idle time can be kept to minimum. It doesn't block the user because threads are independent and you can perform multiple operations at same time. Threads are independent so it doesn't affect other threads if exception occur in a single thread. Life Cycle of Thread New - A thread has been created but not started yet. A thread will be started by calling its start() method. Runnable - This state is also called ready to run stage also called queue. A thread starts in runnable state by calling start() method. The Thread scheduler decides which thread runs and how long. Running - If a Thread is executing that means Thread is in Running stage. Dead - Once a Thread reached dead state it can not run again. Waiting - A Running Thread move to one of the waiting or blocked states, depending upon the situation.