Java Multithreading Tutorial and Concurrency Explained with Example

What is Multithreading?
Multithreading refers to a process of executing two or more threads simultaneously for maximum utilization of the CPU. A thread in Java is a lightweight process requiring fewer resources to create and share the process resources. Multithreading is the ability of a program or an operating system to enable more than one user at a time without requiring multiple copies of the program running on the computer. Multithreading can also handle multiple requests from the same user. Multithreading allows the execution of multiple parts of a program at the same time. These parts are known as threads and are lightweight processes available within the process. So multithreading leads to maximum utilization of the CPU by multitasking.

What is multithreading in Java?
In Java, Multithreaded applications execute two or more threads run concurrently. Hence, it is also known as Concurrency in Java. Each thread runs parallel to each other.
What are the benefits of multithreading?
1. multithreading Improved throughput.
2. Simultaneous and fully symmetric use of multiple processors for computation and I/O.
3. Superior application responsiveness.
4. multithreading Improved server responsiveness.
5. Program structure simplification.
6. Better communication.

What are worker threads in java?
Worker thread in Java is a high-priority thread that runs in the foreground. Worker thread is a continuous parallel thread that runs and accepts messages until the time it is explicitly closed or terminated. Messages to a worker thread can be sent from the parent thread or its child worker threads.

What is thread life cycle in Java and different stages?
A thread goes through various stages in its life cycle. According to Sun, there are only 4 states in the thread life cycle in java new, runnable, non-runnable, and terminated.

What is difference between process and thread?
Process is the program under action whereas a thread is the smallest segment of instructions that can be handled independently by a scheduler.



** TOPIC TO COVER **
1. Introduction Java and Java Multithreading
2. Single Thread Vs Multi Threads
3. How Thread Starts?
4. Master, Worker, User, Daemon Threads
5. Thread Priority, Stack, Register, properties etc
6. Thread Life Cycle and Stages
7. Difference between Process & Thread
8. What is Thread Synchronization?

#java #multithreading #concurrency

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