Geez ... what's the difference between a bicycle and a unicycle? One has two wheels, one has one wheel. Bi = 2 and Uni = 1. Therefore, a bidirectional relationship must have two directions, easily labeled 'to' and 'from''. A unidirectional relationship likewise has one direction.
ONE - ONE Bidirectional ? < ------ > ONE - ONE Unidirectional ? --------->
Here is my understanding: Suppose there are two beans A and B. Bidirectional means: A can get B, and B can get A too; In A: getB(); In B: getA(); Unidirectional means: A can get B, but B can't get A. In A: getB(); In B: no method to get A.
posted 15 years ago
yeh yeh thats the thing i want to know. But some occation they use it both way Thanks X.LI
Cheers<br />Dilip <br />SCJP 1.4 ,SCBCD 1.3
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