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.

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


See Also:

AfterClass