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来源: 互联网 发布时间：2017-03-29
本文导语: Which statements are true about listeners? A. The return value from a listener is of boolean type. B. Most components allow multiple listeners to be added. C. A copy of the original event is passed into a listener ...
Which statements are true about listeners?
A. The return value from a listener is of boolean type.
B. Most components allow multiple listeners to be added.
C. A copy of the original event is passed into a listener method.
D. If multiple listeners are added to a single component, they all must all be friends to each other.
E. If the multiple listeners are added to a single component, the order[in which listeners are called is guaranteed].
A. The return value from a listener is of boolean type.
B. Most components allow multiple listeners to be added.
C. A copy of the original event is passed into a listener method.
D. If multiple listeners are added to a single component, they all must all be friends to each other.
E. If the multiple listeners are added to a single component, the order[in which listeners are called is guaranteed].
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D
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