Why the hell doesn''t Java support multiple inherirance? And how the hell can I use two interfaces, both at the same time, like ActionListener and WindowListener, ? Thanks, Arthur(rockslave)

Java supports multiple inheritance of interfaces, but only single inheritance of implementations.

From a modelling perspective, mutliple inheritance is rarely needed... most things that are done with MI can usually be done better with containment. And so, Java nicely restricts inheritance of implementation to SI.

However, there is a strong desire to require objects with a certain interface, which is why Java allows multiple inheritance of interfaces.

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class Whatever implements Interface1, Interface2, InterfaceN {

... do stuff

}

Thanks, that was very useful!