jeffhao | 5d1ac92 | 2011-09-29 17:41:15 -0700 | [diff] [blame] | 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 | */ |
| 20 | public class Main { |
| 21 | public static void main(String args[]) { |
Andreas Gampe | 1c83cbc | 2014-07-22 18:52:29 -0700 | [diff] [blame] | 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 | |
jeffhao | 5d1ac92 | 2011-09-29 17:41:15 -0700 | [diff] [blame] | 49 | Iface1[] faceArray; |
| 50 | ImplA[] aaArray = new ImplA[5]; |
| 51 | ImplBSub[] bbArray = new ImplBSub[5]; |
jeffhao | 5d1ac92 | 2011-09-29 17:41:15 -0700 | [diff] [blame] | 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 | } |