Is there a way to make Runnable's run() throw an exception?
android, java, runnable, throws
Solution
If you want to pass a class that implements `Runnable` into the `Thread` framework, then you have to play by that framework's rules, see Ernest Friedman-Hill's answer why doing it otherwise is a bad idea.
I have a hunch, though, that you want to call `run` method directly in your code, so your calling code can process the exception.
The answer to this problem is easy. Do not use `Runnable` interface from Thread library, but instead create your own interface with the modified signature that allows checked exception to be thrown, e.g.
public interface MyRunnable
{
void myRun ( ) throws MyException;
}
You may even create an adapter that converts this interface to real `Runnable` ( by handling checked exception ) suitable for use in Thread framework.
Problem
A method I am calling in run() in a class that implements Runnable) is designed to be throwing an exception. But the Java compiler won't let me do that and suggests that I surround it with try/catch. The problem is that by surrounding it with a try/catch I make that particular run() useless. I do want to throw that exception. If I specify `throws` for run() itself, the compiler complains that `Exception is not compatible with throws clause in Runnable.run()`. Ordinarily I'm totally fine with not letting run() throw an exception. But I have unique situation in which I must have that functionality. How to I work around this limitation?