It acts as a starting point for creating a new Thread. The runnable interface implementation uses the code inside the run method and executes it on a concurrent thread. You can either invoke class, create new variables, or call the action in the run method to implement the runnable interface in Java. The program ensures that the thread is inactive until it prints the return statement in the code.
From run method: Thread-0 Errors Encountered When Implementing the Runnable Interface in Java The run method throws a runtime exception error when the program breaks due to syntax or code error.
If a Java virtual machine does not detect the errors, then the created thread handles the exception missed by the JVM. The exception handler prints the exception and stops the program.
The Java virtual machine takes care of the exceptions which should have been handled by the TestRunnableInstance class. The runnable interface in Java is used in a networking scenario where the server receives multiple connection requests from clients.
The runnable interface in Java handles it quickly and efficiently by performing multi-thread programming. In a nutshell, a runnable interface in Java is always a better choice compared to the subclass thread when it comes to creating threads in Java. The code used in the article is only for explanatory purposes.
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When we extend Thread class, each of our thread creates unique object and associate with it. When we implements Runnable, it shares the same object to multiple threads. Lets have a look on the below programs for better understanding:. If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.
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Skip to content. All rights reserved. Use is subject to license terms. Also see the documentation redistribution policy. The class must define a method of no arguments called run.
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