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Thread t1 = new Thread(new MyThread(accountObject)); Thread t2 = new Thread(new YourThread( accountObject )); Thread t3 = new Thread(new HerThread( accountObject ));
The following example uses two threads, one for timing and one to do actual work. The main thread calculates prime numbers using a very straightforward algorithm.
Thread Scheduling Example • Demonstrates basic threading techniques: – Create a class derived from Thread – Use sleep method • What it does: – Create four threads, which sleep for random amount of time – After they finish sleeping, print their name • Program has two classes: – PrintThread • Derives from Thread
ii Java Concurrency In Practice Index Index ii Preface xiii How to Use this Book xiii Code Examples xiv Acknowledgments xv Chapter 1 - Introduction 1 1.1. A (Very) Brief History of Concurrency 2 1.2. Benefits of Threads 3 1.2.1. Exploiting Multiple Processors 3 1.2.2. Simplicity of Modeling 3 1.2.3. Simplified Handling of Asynchronous Events 3
Java Multi-Thread Programming 124 Example 6-1: This example illustrates how to create a new threaded class and test the thread class. The following steps are used to prepare this simple thread example: • Create a new class called Programmer, save it in the folder called programmer
Threads in Java •There are two techniques to implement threads in Java: To subclass Thread and override run(). To implement the Runnable interface (by defining run()) and embed class instances in a Thread object. •Once a Thread instance is created, call the start() method to make it run.
For example, a thread is born, started, runs, and then dies. Following diagram shows complete life cycle of a thread. New: A new thread begins its life cycle in the new state. It remains in this state until the program starts the thread. It is also referred to as a born thread.
