What is a Callable in Java?
An example of an AI chatbot conversation about Java's Callable interface.
Can you explain what a Callable is in Java?
Sure! A Callable in Java is an interface that represents a task that can be executed asynchronously. It can return a result and can throw a checked exception.
How does it differ from Runnable?
The main difference is that Runnable cannot return a result or throw a checked exception, while Callable can do both.
Can you give me an example of how to use Callable?
Certainly! You can implement Callable and override the call() method. Then, use an ExecutorService to execute it.
What happens if the Callable throws an exception?
If a Callable throws an exception, it will be wrapped in an ExecutionException when you retrieve the result from the Future.
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