Java 具有类层次结构的运算符的instanceof
具有类层次结构的运算符的instanceof
实例源码：
源代码：
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/**2
时 代 J a v a 公 众 号 - nowjava.com 提供 3
**/4
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class InstanceofDemo {6
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public static void main(String[] args) {8
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Parent obj1 = new Parent();11
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Parent obj2 = new Child();13
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System.out.println("obj1 instanceof Parent: "16
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+ (obj1 instanceof Parent));18
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System.out.println("obj1 instanceof Child: "20
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+ (obj1 instanceof Child));22
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System.out.println("obj1 instanceof MyInterface: "24
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+ (obj1 instanceof MyInterface));26
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System.out.println("obj2 instanceof Parent: "28
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+ (obj2 instanceof Parent));30
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System.out.println("obj2 instanceof Child: "32
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+ (obj2 instanceof Child));34
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System.out.println("obj2 instanceof MyInterface: "// 来自 n o w j a v a . c o m - 时 代 Java36
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+ (obj2 instanceof MyInterface));38
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}40
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}42
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class Parent {45
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}47
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class Child extends Parent implements MyInterface {50
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}52
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interface MyInterface {55
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}57
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/*60
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* Copyright (c) 1995, 2008, Oracle and/or its affiliates. All rights reserved.62
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*64
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* Redistribution and use in source and binary forms, with or without66
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* modification, are permitted provided that the following conditions68
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* are met:70
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*72
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* - Redistributions of source code must retain the above copyright74
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* notice, this list of conditions and the following disclaimer.76
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*78
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* - Redistributions in binary form must reproduce the above copyright80
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* notice, this list of conditions and the following disclaimer in the82
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* documentation and/or other materials provided with the distribution.84
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*86
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* - Neither the name of Oracle or the names of its88
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* contributors may be used to endorse or promote products derived90
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* from this software without specific prior written permission.92
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*94
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS96
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* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,98
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR100
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR102
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,104
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