This is my collection of methods and constants which helped me throughout my coding practice.
Feel free to push any code that can help somebody and/or helped you, but please, put simple methods in 'Useful.java' and
constansts, methods which require fields, collections of methods related to one thing into another class(es).
Also the code is not licensed by any means, so you are free to use it anywhere you want :)
(but please credit me ok?)