org.junit

## Annotation Type BeforeClass

-     @Retention(value=RUNTIME)
      @Target(value=METHOD)
      public @interface BeforeClass

  Sometimes several tests need to share computationally expensive setup (like logging into a database). While this can compromise the independence of tests, sometimes it is a necessary optimization. Annotating a `public static void` no-arg method with `@BeforeClass` causes it to be run once before any of the test methods in the class. The `@BeforeClass` methods of superclasses will be run before those the current class, unless they are shadowed in the current class.

  For example:

       public class Example {
          @BeforeClass public static void onlyOnce() {
             ...
          }
          @Test public void one() {
             ...
          }
          @Test public void two() {
             ...
          }
       }

  Since:
    4.0
  See Also:
    `AfterClass`