DS in java.

To test one java implementations run:
$ javac com/uca/ds/queue/TestQueue.java
$ java -ea com.uca.ds.queue.TestQueue

To compile and run complete test suite:
$ rm $(find * -name *.class)
$ javac $(find * -name *.java)
$ java -cp "test;src" -ea com.uca.test.suite.TestRunner