Java multithreaded callable interface implementation code example

We are no strangers to multithreading. We are familiar with how to create threads. We won't say more about how to use new thread and implement the runable interface. In this blog post, we introduce the third method: implementing the callable interface.

Callable interface

Interface definition:

As can be seen from the definition of callable:

The callable interface is similar to runnable. Both are designed for classes whose instances may be executed by another thread. Methods can have return values and throw exceptions. But runnable can't.

Callable needs to rely on futuretask to receive operation results. One produces results and the other gets results. Futuretask is an implementation class of the future interface and can also be used as a lock.

Simple example

Calculate the sum of 0 to 100 and return the result.

summary

The callable interface is actually very simple. In a multithreaded environment, it returns results.

I hope this article is helpful for you to understand multithreading and callable interface. Interested friends can continue to refer to this site: talking about Java interface oriented programming, Java programming interface callback, general usage, code analysis, etc. Thank you for your support!