ï»??xml version="1.0" encoding="utf-8" standalone="yes"?>亚洲精品wwwww,亚洲中国最大av网站,亚洲精华国产欧美http://www.aygfsteel.com/jackjhy/archive/2008/05/30/203927.html#203990麦田守望è€?/dc:creator>麦田守望è€?/author>Fri, 30 May 2008 00:21:00 GMThttp://www.aygfsteel.com/jackjhy/archive/2008/05/30/203927.html#203990

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re: 关于extends å’?constructor的默认实çŽîC¸Žè¦†ç›–½{–ç•¥[未登录]http://www.aygfsteel.com/jackjhy/archive/2008/05/29/203416.html#203920季失¾Ÿ?/dc:creator>季失¾Ÿ?/author>Thu, 29 May 2008 11:08:00 GMThttp://www.aygfsteel.com/jackjhy/archive/2008/05/29/203416.html#203920在构造子¾cÕd®žä¾‹å‰å¿…须构造一个父¾cÕd®žä¾‹ä½œä¸ºå­¾cÕd®žä¾‹çš„部分
˜q™å¥è¯å¤ªæ­£ç¡®äº†ã€?br>
如果没有默认增加ClassName()构造方法ã€?br>晕,刚刚发现åQŒå¥è¯»é”™äº†ï¼Œä¸­é—´æœ‰ä¸ªé€—号。汗一ä¸?åQ¸ï¼¤
如果没有åQŒé»˜è®¤å¢žåŠ ClassName()构造方法ã€?br>
其实 ä¿ø™¿™½‹‡æ–‡å­?完全可以三句话说完的

½W¬ä¸€å¥ï¼Œä»ÖM½•一个类都有Constructor
½W¬äºŒå¥ï¼Œä»ÖM½•一个类的Constructor½W¬ä¸€è¡Œä»£ç å°±æ˜¯è°ƒç”¨çˆ¶¾cÈš„æž„造函æ•?br>½W¬ä¸‰å±€åQŒå°±æ˜?以上两句说的东西åQŒä½ å¯ä»¥ä»£ç ä¸­ä¸å†™ï¼Œå› äؓ有默认实玎ͼŒòq¶ä¸”默认实现与编码出来的实现不能òq¶å­˜åQŒä¼šè¢«è¦†ç›–ã€?br>
åQ¸ï¼¤ 骗字数而已 åQ¸ï¼¤

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re: 关于extends å’?constructor的默认实çŽîC¸Žè¦†ç›–½{–ç•¥http://www.aygfsteel.com/jackjhy/archive/2008/05/29/203416.html#203785隔叶黄莺隔叶黄莺Thu, 29 May 2008 04:28:00 GMThttp://www.aygfsteel.com/jackjhy/archive/2008/05/29/203416.html#203785
其实只要è®îC½˜q™ä¸€ç‚¹ï¼Œåœ¨æž„造子¾cÕd®žä¾‹å‰å¿…须构造一个父¾cÕd®žä¾‹ä½œä¸ºå­¾cÕd®žä¾‹çš„部分åQŒæ‰€ä»¥ä»Ž˜q™ä¸€å±‚面讲存在一¿U?has-a 关系ã€?

在CåQ‹ï¼‹æˆ–某些具体面对象的C¾l„äšg中很清楚体现˜q™ä¸€ç‚¹ï¼Œçˆ¶ç±»å®žä¾‹è¦æ”¾åœ¨å­¾cÕd®žä¾‹çš„首地址åQŒæ‰€ä»¥æ‰èƒ½ä¿è¯å‘上安全è{åž?

如果没有默认增加ClassName()构造方法。 ˜q™å¥è¯ä¸æ˜¯å¾ˆå¥½ç†è§£ï¼Œæ²¡æœ‰å¢žåŠ ClassName()æž„é€ æ–¹æ³•æ˜¯äººçš„è¡ŒäØ“åQŒä¸å­˜åœ¨æ˜¯å¦é»˜è®¤

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re: 关于extends å’?constructor的默认实çŽîC¸Žè¦†ç›–½{–ç•¥http://www.aygfsteel.com/jackjhy/archive/2008/05/29/203416.html#203726季失¾Ÿ?/dc:creator>季失¾Ÿ?/author>Thu, 29 May 2008 02:02:00 GMThttp://www.aygfsteel.com/jackjhy/archive/2008/05/29/203416.html#203726是,¾l§æ‰¿å¦ä¸€ä¸ªç±»ä¹Ÿè®¸æ›´åŠ æ¸…æ¥šä¸€äº›ï¼Œä½†æ˜¯ 既然文章的主要意思是说默认实çŽîC¸Žè¦†ç›–关系çš?hoho ˜q™ä¹ˆè¯´æ˜¯ä¸€¿Uæƒ¯æ€§XD

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re: 关于extends å’?constructor的默认实çŽîC¸Žè¦†ç›–½{–ç•¥http://www.aygfsteel.com/jackjhy/archive/2008/05/29/203416.html#203724季失¾Ÿ?/dc:creator>季失¾Ÿ?/author>Thu, 29 May 2008 02:00:00 GMThttp://www.aygfsteel.com/jackjhy/archive/2008/05/29/203416.html#203724在构造方法内部,¾~–译器会‹‚€æŸ¥ç¬¬ä¸€è¡Œä»£ç æ˜¯å¦äØ“super构造方法,如果不是åQŒé»˜è®¤æ·»åŠ super()
按照上面˜q™å¥è¯çš„理解 ž®±æ˜¯
package org.myth.test;

public class SuperSon extends SuperMan{

SuperSon(){
System.out.println("this is super son");
}

}

其实½{‰åŒäº?br>package org.myth.test;

public class SuperSon extends SuperMan{

SuperSon(){
super();
System.out.println("this is super son");
}

}

昄¡„¶åQŒçˆ¶¾cÖM¸­æ˜¯ä¸å­˜åœ¨æ— å‚数构造方法的åQŒæ‰€ä»¥ç¼–译器回报错,不存在super()构造方法ã€?br>

另外åQŒå¯¹äºŽæ‚¨è¯´çš„has-a的关¾p»ï¼Œç‰¹å®šç•Œå®šä¹‹ä¸‹å¯ä»¥˜q™ä¹ˆè®ÔŒ¼Œä½†æ˜¯æ›´å‡†¼‹®è€Œè¨€åQŒå­¾cÀL˜¯çˆ¶ç±» 应该是is a 的关¾p…R€?img src ="http://www.aygfsteel.com/jackjhy/aggbug/203724.html" width = "1" height = "1" />

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re: 关于extends å’?constructor的默认实çŽîC¸Žè¦†ç›–½{–ç•¥http://www.aygfsteel.com/jackjhy/archive/2008/05/28/203416.html#203641隔叶黄莺隔叶黄莺Wed, 28 May 2008 13:41:00 GMThttp://www.aygfsteel.com/jackjhy/archive/2008/05/28/203416.html#203641
只要知道子类和父¾cÖM¹‹é—´æ˜¯ä¸€¿U?Has-A 的关¾pÕd°±å¥½ç†è§£äº†åQŒåœ¨çˆ¶ç±»æ²¡æœ‰é»˜è®¤æž„造方法时åQŒåœ¨åˆ›å¾å­ç±»å®žä¾‹æ—Óž¼Œå®ƒå°±æ— ä»ŽèŽäh‚‰è¯¥å¦‚何实例化出它的部åˆ?-父类实例åQŒsuper() 已经不见效了åQŒå› ä¸ºçˆ¶¾cÖM¸å­˜åœ¨ super() 了,所以就要求在子¾cÈš„æž„造方法中昑ּçš„调用父¾cÈš„æŸä¸ªæž„造方法ã€?img src ="http://www.aygfsteel.com/jackjhy/aggbug/203641.html" width = "1" height = "1" />

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re: 关于extends å’?constructor的默认实çŽîC¸Žè¦†ç›–½{–ç•¥[未登录]http://www.aygfsteel.com/jackjhy/archive/2008/05/28/203416.html#203637Matthew ChenMatthew ChenWed, 28 May 2008 13:26:00 GMThttp://www.aygfsteel.com/jackjhy/archive/2008/05/28/203416.html#203637对于lz说的被另一个ç‘ô承覆ç›?override)的说法,怎么看得别扭åQŒå°±æ˜¯ç‘ô承自非object的类ž®±å¥½äº†ï¼Œæ²¡å¿…要太复杂ã€?img src ="http://www.aygfsteel.com/jackjhy/aggbug/203637.html" width = "1" height = "1" />

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re: 关于extends å’?constructor的默认实çŽîC¸Žè¦†ç›–½{–ç•¥http://www.aygfsteel.com/jackjhy/archive/2008/05/28/203416.html#203475季失¾Ÿ?/dc:creator>季失¾Ÿ?/author>Wed, 28 May 2008 05:41:00 GMThttp://www.aygfsteel.com/jackjhy/archive/2008/05/28/203416.html#203475˜q™ä¸ªé—®é¢˜åQŒä½ çœ‹æˆ‘最后一个错误代码示ä¾?ž®ÞqŸ¥é“了 ^_^

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re: 关于extends å’?constructor的默认实çŽîC¸Žè¦†ç›–½{–ç•¥http://www.aygfsteel.com/jackjhy/archive/2008/05/28/203416.html#203439隔叶黄莺隔叶黄莺Wed, 28 May 2008 03:40:00 GMThttp://www.aygfsteel.com/jackjhy/archive/2008/05/28/203416.html#203439

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re: 关于extends å’?constructor的默认实çŽîC¸Žè¦†ç›–½{–ç•¥http://www.aygfsteel.com/jackjhy/archive/2008/05/28/203416.html#203424Happy漫步è€?/dc:creator>Happy漫步è€?/author>Wed, 28 May 2008 03:13:00 GMThttp://www.aygfsteel.com/jackjhy/archive/2008/05/28/203416.html#203424

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