Try-with-resources and return statements in java

Based on Oracle's tutorial, "[the resource] will be closed regardless of whether the try statement completes normally or abruptly". It defines abruptly as from an exception.

Returning inside the try is an example of abrupt completion, as defined by JLS 14.1.


The resource will be closed automatically (even with a return statement) since it implements the AutoCloseable interface. Here is an example which outputs "closed successfully":

public class Main {

    public static void main(String[] args) {
        try (Foobar foobar = new Foobar()) {
            return;
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

class Foobar implements AutoCloseable {

    @Override
    public void close() throws Exception {
        System.out.println("closed successfully");
    }
}