Protected method in Java

The protected modifier specifies that the member can only be accessed within its own package (sic! - just in case) (as with package-private) and, in addition, by a subclass of its class in another package.

http://docs.oracle.com/javase/tutorial/java/javaOO/accesscontrol.html

Заметкопост: апгрейд до Apache 2.4 на Debian Wheezy

На Debian Wheezy (stable) по дефолту идет Apache 2.2. В моем случае мне понадобился mod_auth_form, который присутствует в 2.4+ версиях.

Эта версия есть в jessy (testing) репозитории, который, на самом деле, вполне стабильный.

1) Добавляем testing репозиторий в sources.list
# echo "deb http://ftp.debian.org/debian testing main" >> /etc/apt/sources.list
В моем случае, содержимое стало таким:
# cat /etc/apt/sources.list
deb http://ftp.debian.org/debian wheezy main contrib non-free
deb http://security.debian.org wheezy/updates main contrib non-free
deb http://ftp.debian.org/debian testing main

Parallelism or Concurrency

Concurrency is when two tasks can start, run, and complete in overlapping time periods. It doesn't necessarily mean they'll ever both be running at the same instant. Eg. multitasking on a single-core machine.

Parallelism is when tasks literally run at the same time, eg. on a multicore processor.

Source