写完我自己的通用功能接口并将其与lambda结合使用后,我必须在一种新方法中使用它:
以前从未使用过功能接口,有人可以解释一下我应该如何将2个功能接口作为方法参数来传递?
例如通话:
applyTransformations(new Integer[]{1,2,3,4}, add, printer);
@FunctionalInterface
public interface MyFunctionalInterface<T> {
public T doOperation(T param1, T param2, T param3, T param4);
}
public class Lambdas {
MyFunctionalInterface<Integer> add = (i1, i2, i3, i4) -> i1 + i2 + i3 + i4;
MyFunctionalInterface<Integer> multiply = (i1, i2, i3, i4) -> i1 * i2 * i3 * i4;
MyFunctionalInterface<String> concatenate = (s1, s2, s3, s4) -> s1 + s2 + s3 + s4;
MyFunctionalInterface<String> concatenateWithSpacesBetween = (s1, s2, s3, s4) -> s1 + " " + s2 + " " + s3 + " " + s4;
}