I need to test some api. For example I have multiple @Test methods in the class to test my functionality, before init I connect to some url of my service, and use it.
Happen to me sometime, and them I found this awesome idea called Parameterized Test, for instance: http://www.mkyong.com/unittest/junit-4-tutorial-6-parameterized-test/ in this way you can all the same tests couple of time with different argument.
there are prameterized tests: http://www.mkyong.com/unittest/junit-4-tutorial-6-parameterized-test/ and http://ourcraft.wordpress.com/2008/08/27/writing-a-parameterized-junit-test/.
alternatively, you can make your test case abstract and subclass it with each subclass setting up the url.