The tradition data structure and algorithm and the counterpart in concurrency,with the performance comparison. There are some utils classes come from the <algorithms 4th> by the Robert Sedgewick,Kevin Wayne The website is
http://introcs.cs.princeton.edu/java/stdlib/StdIn.java.html http://introcs.cs.princeton.edu/java/stdlib/StdOut.java.html http://introcs.cs.princeton.edu/java/stdlib/In.java.html http://introcs.cs.princeton.edu/java/stdlib/Out.java.html