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Invoking the Thread.start() method tells the Java runtimes runtime to start executing the thread's run() method using the started thread. Invoking a Thread object's run() method directly is incorrect. When a a Thread object's run() method is invoked directly, the statements in the run() method are executed by current thread, rather than by the newly created thread. Furthermore, if the Thread object was constructed by instantiating a subclass of Thread that fails to override the run() method rather than being constructed from a Runnable object, calls to the subclass's run() method invoke Thread.run(), which does nothing.

Consequently, programs must not directly invoking invoke a Thread object's run() method is forbidden.

Noncompliant Code Example

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