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public final class Config {

Java · general · type the snippet below to practice

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about this snippet

This is the singleton snippet in Java — 13 lines of real Java code that exercises common patterns you'll see in production. DeveloperType scores you on net WPM and accuracy and only counts runs above 95% accuracy on the leaderboard, so practice rewards precision, not speed alone.

view source (13 lines)
public final class Config {
    private static volatile Config instance;
    private Config() {}
    public static Config get() {
        if (instance == null) {
            synchronized (Config.class) {
                if (instance == null) instance = new Config();
            }
        }
        return instance;
    }
}

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