Java 内层延伸
内层延伸
实例源码：
源代码：
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/* 来 自 n o w j a v a . c o m - 时代Java*/2
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public class Class2 extends Class1 {4
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public Class2() {6
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ic = new InnerClass2();8
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}10
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static public void main(String[] args) {13
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Class2 c2 = new Class2();15
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c2.displayStrings();17
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}19
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protected class InnerClass2 extends InnerClass1 {22
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public String getAnotherString() {24
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return "InnerClass2 version of getAnotherString invoked";26
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}28
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}30
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}33
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class Class1 {35
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protected InnerClass1 ic;37
/* 38
来自 39
*N o w J a v a . c o m - 时 代 Java*/40
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public Class1() {43
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ic = new InnerClass1();45
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}47
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public void displayStrings() {50
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System.out.println(ic.getString() + ".");52
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System.out.println(ic.getAnotherString() + ".");54
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}56
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static public void main(String[] args) {59
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Class1 c1 = new Class1();61
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c1.displayStrings();63
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}65
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protected class InnerClass1 {68
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public String getString() {70
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return "InnerClass1: getString invoked";72
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}74
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public String getAnotherString() {77
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return "InnerClass1: getAnotherString invoked";79
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}81
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}83
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}85
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/*87
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* Copyright (c) 1995, 2008, Oracle and/or its affiliates. All rights reserved.89
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*91
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* Redistribution and use in source and binary forms, with or without93
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* modification, are permitted provided that the following conditions95
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* are met:97
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*99
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* - Redistributions of source code must retain the above copyright101
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* notice, this list of conditions and the following disclaimer.103
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*105
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* - Redistributions in binary form must reproduce the above copyright107
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* notice, this list of conditions and the following disclaimer in the109
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* documentation and/or other materials provided with the distribution.111
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*113
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* - Neither the name of Oracle or the names of its115
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* contributors may be used to endorse or promote products derived117
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* from this software without specific prior written permission.119
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*121
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS123
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* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,125
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR127
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR129
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,131
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