OnJava8-Examples/innerclasses/MultiImplementation.java

26 lines
658 B
Java

// innerclasses/MultiImplementation.java
// (c)2021 MindView LLC: see Copyright.txt
// We make no guarantees that this code is fit for any purpose.
// Visit http://OnJava8.com for more book information.
// For concrete or abstract classes, inner classes
// produce "multiple implementation inheritance"
// {java innerclasses.MultiImplementation}
package innerclasses;
class D {}
abstract class E {}
class Z extends D {
E makeE() { return new E() {}; }
}
public class MultiImplementation {
static void takesD(D d) {}
static void takesE(E e) {}
public static void main(String[] args) {
Z z = new Z();
takesD(z);
takesE(z.makeE());
}
}