Consider greenfoot as a combination between a framework for creating two-dimensional grid assignments in Java and an integrated development environment (class browser, editor, compiler, execution, etc.) suitable for novice programmers. While greenfoot supports the full Java language, it is especially useful for programming exercises that have a visual element. In greenfoot object visualisation and object interaction are the key elements.
Greenfoot — введение в ООП
С Днем Системного Администратора
Поздравляю с Днем Системного администратора, желаю, конечно, как можно меньше хлопот, и больше интересной и новой работы!

