Most Asked Multithreading Interview Questions and Answers in Java | Code Decode 

In this video of code decode, you will learn Multithreading Interview Questions and Answers in Java for experienced and freshers which is important in Java Interview Questions and Answers
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Q) What is MultiTasking And Its types. In java interview question and Answers
Performing multiple tasks at one time . There are 2 types of multitasking :
Process based multitasking
Thread based multitasking
Q) What is Multi threading & how is it diff from multi tasking asked In java interview question and Answers
Multithreading is a specialized form of multitasking.
Process-based multitasking is executing several tasks simultaneously where each task is a separate independent process is Process-based multitasking .
For example, process based multitasking enables you to run the Java IDE at the same time that you are using a text editor or visiting a web site using chrome.
Thread-based multitasking is executing several tasks simultaneously where each task is a separate independent part of the same program (called Thread).
For instance,JUnit uses threads to run test cases in parallel. As an application, you can have computer games. You see objects in games like cars, motor bikes etc. They are just threads that run in the game application.
Thus, process-based multitasking deals with the “big picture,” and thread-based multitasking handles the details
Q) Which is better process based multitasking or thread based multitasking and why is one of the most asked java interview question and Answers?
Thread based multitasking is better.
Multitasking threads require less overhead than multitasking processes.
Processes are heavyweight tasks that require their own separate address spaces.
Threads, on the other hand, are lighter weight. They share the same address space and cooperatively share the same heavyweight process.
Interprocess communication is expensive and limited. Context switching from one process to another is also costly. In java interview
Q) Which is better process based multitasking or thread based multitasking and why?
Inter Thread communication is inexpensive, and context switching from one thread to the next is lower in cost.
While Java programs make use of process-based multitasking environments, process-based multitasking is not under Java’s direct control. However, multithreaded multitasking is.
Q) What is a Thread
Threads are light-weight processes within a process.
Java creates threads by using a "Thread Class".
All Java programs have at least one thread, known as the main thread, which is created by the Java Virtual Machine (JVM) at the program’s start, when the main() method is invoked with the main thread.
Q) Types of Thread in java
There are two types of thread - user thread and daemon thread.
Q) How to create a user thread in Java
Thread implementation in java can be achieved in two ways:
Extending the java.lang.Thread class
Implementing the java.lang.Runnable Interface
When the JVM starts, it creates a thread called “Main”. Your program will run on this thread, unless you create additional threads yourself. The first thing the “Main” thread does is to look for your static void main (String args[]) method and invoke it. That is the entry-point to your program. If you create additional threads in the main method those threads would be the child threads of main thread.
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