Introduction to Multithreading
In Java, Multithreading is a core feature that allows concurrent execution of two or more parts of a program for maximum utilization of CPU. Each part of such a program is called a thread.
Creating Threads in Java
There are two primary ways to create a thread in Java:
Thread Lifecycle
During its lifetime, a thread in Java undergoes various states from its creation to its termination. Understanding these states is critical for writing robust multithreaded applications.
Thread Methods & Priority
The java.lang.Thread class provides a multitude of methods to control and manipulate the behavior of threads. Let's look at the most commonly used methods for pausing, yielding, and joining threads, as well as how to assign priorities.
Thread Synchronization
When two or more threads attempt to access the same shared resource simultaneously, it can lead to erratic behavior, data inconsistency, and corrupted results. This is known as a Race Condition or Thread Interference.
Inter-Thread Communication
Inter-thread communication allows synchronized threads to communicate with each other. It is a mechanism in which a thread pauses running in its critical section and allows another thread to enter (or lock) the same critical section to be executed.