What is Multithreading?
In the world of computing, multithreading is the task of creating a new thread of execution within an existing process rather than starting a new process to begin a function. Essentially, the task of multithreading is intended to make wiser use of computer resources by allowing resources that are already in use to be simultaneously utilized by a slight variant of the same process. The basic concept of multithreading has been around for some time, but gained wider attention as computers became more commonplace during the decade of the 1990’s. This form of time-division multiplexing creates an environment where a program is configured to allow processes to fork or split into two or more threads of execution. The parallel execution of threads within the same program is often touted as a more efficient use of the resources of the computer system, especially with desktop and laptop systems. By allowing a program to handle multiple tasks with a multithreading model, the system does not have
A thread executes a series of instructions. Every line of code that is executed is done so by a thread. Some threads can run for the entire life of the applet, while others are alive for only a few milliseconds. Multithreading is the ability to have various parts of program perform program steps seemingly at the same time. Java let programs interleave multiple program steps through the use of threads. For example,one thread controls an animation, while another does a computation. In Java, multithreading is not only powerful, it is also easy to implement. You can implement threads within a java program in two ways – Creating an object that extends Class Thread or implementing the interface Runnable. The key difference between the two is that Thread class has a strart() method which your program simple calls whereas the Runnable class does not have a start method and you must create a Thread object and pass your thread to its constructor method. You never call run() method directly; the
