Singletons in java

Logger.java

/**
 * Created with IntelliJ IDEA.
 * User: cgoodmac
 * Date: 8/5/13
 * Time: 6:49 PM
 * To change this template use File | Settings | File Templates.
 */
public class Logger {

    private static Logger thisInstance;

    private Logger(){

    }

    public static Logger getInstance(){

        if (thisInstance == null ) {
            thisInstance = new Logger();
        }
        return thisInstance;

    }

    public void log() {
        System.out.print("logb");
    }

    public static void main(String[]args){
        Logger.getInstance().log();
    }

}