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Function2.java

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/**
 * Function2 is an interface specification for a function object of 2 arguments.
 * The apply method is called when this function is to be applied to two
 * Objects.  It returns an Object.
 */

interface Function2
{
/**
 * Apply this Function1 to two Object arguments, returning an Object.
 */

Object apply(Object x, Object y);
}

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