主题：【原创】JAVA和C#，武当和少林之争! -- Highway

An interface is like a class but has only empty declarations of its methods. The designer of the interface declares the methods that must be supported by classes that implement the interface and declares what those methods should do. Here is a Lookup interface for finding a value in a set of values:

interface Lookup {

/** Return the value associated with the name, or

* null if there is no such value */

Object find(String name);

}

delegate是啥就不知道了。