Main.java revision 1c83cbc4a817acbd7f9abb5b29a2d418a958e6a1 
1/*
2 * Copyright (C) 2007 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17/**
18 * more instanceof cases
19 */
20public class Main {
21    public static void main(String args[]) {
22        Iface1 face1;
23        ImplA aa = new ImplA();
24        ImplBSub bb = new ImplBSub();
25        boolean aaOkay, bbOkay;
26
27        face1 = aa;
28        face1 = bb;
29
30        System.out.println("iface1.mFloaty = " + face1.mFloaty + " " + face1.mWahoo);
31        System.out.println("aa.mFloaty = " + aa.mFloaty + " " + aa.mWahoo);
32        System.out.println("bb.mWhoami = " + bb.mWhoami);
33
34        aaOkay = face1 instanceof ImplA;
35        System.out.print("aaOkay (false) = ");
36        System.out.println(aaOkay);
37        bbOkay = face1 instanceof ImplB;
38        System.out.print("bbOkay (true) = ");
39        System.out.println(bbOkay);
40
41        bb = (ImplBSub) face1;
42        try {
43            aa = (ImplA) face1;
44        }
45        catch (ClassCastException cce) {
46            System.out.println("Caught a ClassCastException (expected)");
47        }
48
49        Iface1[] faceArray;
50        ImplA[] aaArray = new ImplA[5];
51        ImplBSub[] bbArray = new ImplBSub[5];
52
53        faceArray = aaArray;
54        faceArray = bbArray;
55
56        System.out.print("instanceof Serializable = ");
57        System.out.println((Object)aaArray instanceof java.io.Serializable);
58        System.out.print("instanceof Cloneable = ");
59        System.out.println((Object)aaArray instanceof java.lang.Cloneable);
60        System.out.print("instanceof Runnable = ");
61        System.out.println((Object)aaArray instanceof java.lang.Runnable);
62
63        aaOkay = faceArray instanceof ImplA[];
64        System.out.print("aaOkay (false) = ");
65        System.out.println(aaOkay);
66        bbOkay = faceArray instanceof ImplB[];
67        System.out.print("bbOkay (true) = ");
68        System.out.println(bbOkay);
69    }
70}
71