GIT - 19 tips (russian)

http://habrahabr.ru/company/mailru/blog/267595/

THREAD - how to stop running thread

private volatile Thread blinker;

    public void stop() {
        blinker = null;
    }

    public void run() {
        Thread thisThread = Thread.currentThread();
        while (blinker == thisThread) {
            try {
                Thread.sleep(interval);
            } catch (InterruptedException e){
            }
            repaint();
        }
    }

http://docs.oracle.com/javase/7/docs/technotes/guides/concurrency/threadPrimitiveDeprecation.html

JAVA COLLECTIONS framework structure

ALGORITHM - red black tree good show case practicing

http://tommikaikkonen.github.io/rbtree/#

JAVA - opensource github java non-mobile apps

http://habrahabr.ru/post/266821/

BINARY - calculator

http://www.calculator.net/binary-calculator.html?b2dnumber1=10101010&calctype=b2d&x=75&y=16

UML - good illustration

http://www.ibm.com/developerworks/rational/library/content/RationalEdge/sep04/bell/

DATA STRUCTURE - heap tree

http://habrahabr.ru/post/246105/

JAVA - Hashmap

http://habrahabr.ru/post/128017/
http://habrahabr.ru/post/164027/
http://habrahabr.ru/post/162017/
http://javarevisited.blogspot.com/2011/02/how-hashmap-works-in-java.html
http://javahungry.blogspot.com/2013/08/hashing-how-hash-map-works-in-java-or.html

JAVA - understannding recursion in conjunction with JVM stack

http://www.javamex.com/tutorials/techniques/recursion_how.shtml