Why do one call start method of thread if start() calls run() in turn" or "What is difference by calling start() over run() method in java thread" are two widely popular beginner level multi-threading interview question. When a Java programmer start learning Thread, first thing he learns is to implement thread either overriding run() method of Thread class or implementing Runnable interface and than calling start() method on thread, but with some experience he finds that start() method calls run() method internally either by looking API documentation or just poking around, but many of us just don’t care at that time until its been asked in Java Interview. In this Java tutorial we will see What is difference between calling start() method and run() method for starting Thread in Java.
This article is in continuation of my earlier post on Java multi-threading e.g. Difference between Runnable and Thread in Java and How to solve Producer Consumer problem in Java using BlockingQueue. If you haven’t read them already you may find them interesting and useful.
