SingletonClass.java

public class SingletonClass {

    private static final com.nikoskatsanos.nkjutils.yalf.YalfLogger log = com.nikoskatsanos.nkjutils.yalf.YalfLogger.getLogger(SingletonClass.class);

    private SingletonClass() {
        log.info("Initializing %s", this.getClass().getName());
    }

    public static final SingletonClass getInstance() {
        return SingletonClassHelper.INSTANCE;
    }

    private static class SingletonClassHelper {
        private static final SingletonClass INSTANCE = new SingletonClass();
    }
}