@Autowired annotation not able to inject bean in JUnit class

my test class:

public class myTest extends TestCase{
 @Autowired
 BeanClass beanObject
 public void beanTest()
 {
 Classdata data = beanObject.getMethod();
 }
 }
 

I am getting a null pointer exception at line:

Classdata data = beanObject.getMethod();
 

the beanObject.getMethod(); precisely gives nullpointer exception

How should i make possible the autowiring of the field beanObject in my Junit class so that i can use the methods from the "BeanClass" class?

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Copied from Comments:

in plain terms.. beanClass is an
interface which has certain methods..
i have tagged that beanClass with
@Service("beanObject")
annotation..that banClass is
implemented by beanClassImpl class
which has the method implementations..
i need to use those implementations in
my testClass to get the data to be
compared.. for that i am doing
@Autowired beanClass beanObject in
my testClass.. m i going terribly
wrong somewhere?

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