The NetBeans project is located here: interfaces.zip
code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 | package com.bluelotussoftware.example.core;/* * Odd looking import to allow C to be used without nesting (chaining). */import com.bluelotussoftware.example.core.A.B.C;/** * * @author John Yeary * @version 1.0 */public class A { /** * This can only be used by classes, or interfaces declared inside the * Parent class. */ private interface W { void w(); } /** * This can be used by classes, or interfaces declared inside the parent * class, or the same package. */ protected interface X { String x(); } /** * This can be used by classes, or interfaces declared inside the parent * class, or classes inside the same package. */ interface Y { String y(); } /** * This can be used by any class. */ public interface Z { String z(); } /** * Inner class */ class B implements W { @Override public void w() { } class C extends B { @Override public void w() { System.out.println("NO!"); } } } private void run(Y z) { System.out.println(z.y()); } void execute() { // Anonymous method local inner class. run(new Y() { @Override public String y() { return "YES!"; } }); // Anonymous method local inner class with method call. System.out.println(new X() { @Override public String x() { return "It is a question of something..."; } }.x()); // Construction of a multi-nested inner class C c = new A().new B().new C(); c.w(); } public static void main(String... args) { new A().execute(); // Constructor chaining with a method call. new A().new B().new C().w(); }} |
