"Implementing" a class in Java

I have a homework assignment for a Java class where it tells me to "implement" a class that they outline for me (Tells me what it does, and various attributes of the class, as well as some methods), as well as to "write some java statements that test the class," and I was wondering what exactly the question is asking me to do.

I'm not looking for answers to my homework, but I just don't exactly know what that means to "implement" the class, and to "test the class" for a homework problem. I can handle the actual coding, if there is any involved.

Thanks