The Mute Design Pattern

lukaseder

10 years ago

Have you been writing a lot of code following the Mute-Design-Pattern™ lately? E.g.


try {
    complex();
    logic();
    here();
}
catch (Exception ignore) {
    // Will never happen hehe
    System.exit(-1);
}

There’s an easier way with Java 8! Just add this very useful tool to your Utilities or Helper class:


public class Helper {

    // 18395 lines of other code here

    @FunctionalInterface
    interface CheckedRunnable {
        void run() throws Throwable;
    }

    public static void mute(CheckedRunnable r) {
        try {
            r.run();
        }
        catch (Throwable ignore) {
            // OK, better stay safe
            ignore.printStackTrace();
        }
    }

    // 37831 lines of other code here
}

Now you can wrap all your logic in this nice little wrapper:


mute(() -&gt; {
    complex();
    logic();
    here();
});

Done! Even better, in some cases, you can use method references


try (Connection con = ...;
     PreparedStatement stmt = ...) {

    mute(stmt::executeUpdate);
}