one uncertainty on single inheritance in Universal-Image-Loader

[bytebeats]

Recently, I was reading the source codes of Universal-Image-Loader, And I found an interesting question on inheritance in Java. We know that the multiple inheritance is not allowed in Java. Java designers replaced the concept of multiple inheritance by that of interface. In the release 1.9.1 of Universal-Image-Loader, the interface called BlockingDeque in the package of com.nostra13.universalimageloader.core.assist.deque extends two parent class, BlockingQueue and Deque, but Eclipse does't show any wrong information about it. So I am confused about it. Does someone else ever notice this??

[nostra13]

BlockingQueue and BlockingQueue are interfaces. Java allow "multiple inheritance" of interfaces, i.e. class can implement multiple interfaces and interface can extend multiple interfaces.

[bytebeats]

Oh, thanks for answers, I have learnt a lot from this question. Meanwhile, thanks for your great works on UIL~

[nostra13]

You're welcome.