JUnit 4 Annotations

@Test		Identifies a method as a test method.

@Before		Executed before each test. It is used to prepare the test environment
		(e.g. read input data, initialize the class).

@After		Executed after test. It is used to cleanup the test environment. 
		It can also save memory by cleaning up expensive memory structures.

@BeforeClass	Executed once, before the start of all tests. Methods marked with
		this annotaion need to be defined as static to work with JUnit.

@AfterClass	Executed once, after all tests have been finished. 
		Methods annotated with this annotation need to be defined as static 
        	to work with JUnit.

@Ignore		Marks that the test should be disabled.

@Test(expected =	Fails if the method does not throw the named exception.
Exception.class)

@Test(timeout = 10)	Fails if the method takes longer than 100 millseconds.