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General Java Programming Tips
  [±Û¸ñ·Ï /½Ã°£¼ø] [´ä±Û¾²±â] [ÇÁ¸°Æ®]   
Á¦¸ñ : ´ÙÀ½ ÄÚµå Á» ºÁÁÖ¼¼¿ä...
±Û¾´ÀÌ: ¼Õ´Ô(guest) 2006/06/26 09:36:38 Á¶È¸¼ö:6410 ÁÙ¼ö:24
public class Test1 extends Object { 

} 

public class Test2 extends Package { 

} 

ÀÌ·¸°Ô °£´ÜÇÏ°Ô 2°³¸¦ ¸¸µé¾î ÄÄÆÄÀÏ Çϸé... 
Package Ŭ·¡½º¸¦ »ó¼Ó¹Þ´Â Test2 Ŭ·¡½º´Â »ý¼ºÀÚ ¿À·ù°¡ ¹ß»ýÇϴµ¥¿ä... 

======================================================== 
---------- ÀÚ¹ÙÄÄÆÄÀÏ ---------- 
Test2.java:1: cannot resolve symbol 
symbol  : constructor Package () 
location: class java.lang.Package 
public class Test2 extends Package { 
       ^ 
1 error 

Ãâ·Â ¿Ï·á (0ÃÊ °æ°ú) - Á¤»ó Á¾·á 
======================================================== 

¿Ö ¹ß»ýÇÏ´Â °Ç°¡¿ä ?
Á¦¸ñ : Re: API¸¦ º¸¼¼¿ä..
±Û¾´ÀÌ: ½ÅÀ±¼·(guest) 2006/06/27 10:24:26 Á¶È¸¼ö:6640 ÁÙ¼ö:17
APIÇѹø¸¸ º¸¼Ì¾îµµ ¾Æ½Ç¼ö ÀÖÀ¸¼ÌÀ» ÅÙµ¥...

api ¸¦ º¸½Ã¸é java.lang.Package Ŭ·¡½º´Â »ý¼ºÀÚ°¡ ¾ø½À´Ï´Ù.
(¿¨?»ý¼ºÀÚ°¡ ¾ø´Ù±¸?) 


¸Þ¼Òµåµé Áß¿¡º¸½Ã¸é staticÀ¸·Î Á¤ÀǵǾî ÀÖ°í ¸®ÅÏŸÀÔÀÌ
Package ³ª Package[] ÀÎ getPackage(String name) ȤÀº getPackages() 
¶ó´Â ¸Þ¼Òµå°¡ ÀÖ½À´Ï´Ù.


½±°Ô¸»ÇØ Package Ŭ·¡½ºÀÇ »ý¼ºÀÚ´Â privateÀ¸·Î ³»ºÎ¿¡ ¼û°ÜÁ® ÀÖ°í
À§ µÎ ¸Þ¼Òµå¸¦ ÅëÇØ »ý¼º ÇØ ³»´Â ±¸Á¶·Î µÇ¾îÀÖ½À´Ï´Ù.
¿¹.. Àß ¾Ë°í °è½Ã´Â ½Ì±ÛÅÏ ÆÐÅÏÀÌÁÒ..


Á¦¸ñ : Re: ´äº¯ °¨»çÇØ¿ä ^^ ±Ùµ¥...
±Û¾´ÀÌ: ¼Õ´Ô(guest) 2006/06/27 10:56:19 Á¶È¸¼ö:4590 ÁÙ¼ö:8
Á» ½±°Ô ¾ê±âÇØ¼­¿ä ^^;

public class Test2 extends Package { 

} 

Test2 Ŭ·¡½º´Â Package Ŭ·¡½º¸¦ »ó¼Ó¹ÞÀ» ¼ö ¾ø´Ù´Â ¸»¾¸À̽Ű¡¿ä ?
¾Æ´Ï¸é, »ó¼Ó ¹ÞÀ» ¼ö Àִµ¥... ¹®¹ýÀÌ Æ²¸°°ÇÁö ;;
Á¦¸ñ : Re: ´äº¯ °¨»çÇØ¿ä ^^ ±Ùµ¥...
±Û¾´ÀÌ: ¼Õ´Ô(guest) 2006/06/27 15:28:10 Á¶È¸¼ö:4736 ÁÙ¼ö:22

°á·ÐÀº »ó¼Ó¹Þ´Â°Í ÀÚü´Â Çã¿ëÇÑ´Ù´Â ¸»À̳ª »ý¼ºÀÚ´Â »ó¼ÓÇÏÁö ¾Ê°Ú´Ù´Â ¶æÀÔ´Ï´Ù.

µû¶ó¼­ Package class ¸¦ ±»ÀÌ »ó¼Ó ¹Þ°í ½ÍÀ¸½Ã´Ù¸é »ý¼ºÀÚ¸¦ ±¸ÇöÇØ 
ÁÖ¾î¾ß ÇÑ´Ù´Â ¸»ÀÔ´Ï´Ù.
°£´ÜÇÏ°Ô ¸¸µé¾î º¸¸é...

public class Test2 extends Package {

   Package pkg = null;

   public Test2() {
      pkg = Package.getPackage("test2");
   }

   ...

}

¿Í °°ÀÌ »ý¼ºÀÚ¸¦ ±¸ÇöÇØ ÁÖ¾î¾ß ÇÑ´Ù´Â ¸»ÀÔ´Ï´Ù.

Á¦¸ñ : Re: ´äº¯ °¨»çÇØ¿ä ^^
±Û¾´ÀÌ: ¼Õ´Ô(guest) 2006/06/27 22:17:50 Á¶È¸¼ö:4836 ÁÙ¼ö:13
public class Test2 extends Package {

   Package pkg = null;

   public Test2() {
      pkg = Package.getPackage("test2");
   }

   //...

}

ÀÌ·¸°Ô ¸¸µé¾î º¸°í, ÄÄÆÄÀÏ Çߴµ¥ ;; °°Àº ¿À·ù ³ª¿ä ¤Ð.¤Ð ;;
Á¦¸ñ : Re: Package´Â child°¡ »ç¿ëÇÒ ¼ö ÀÖ´Â »ý¼ºÀÚ°¡ ¾ø½À´Ï´Ù.
±Û¾´ÀÌ: ¼Õ´Ô(guest) 2006/06/29 20:08:42 Á¶È¸¼ö:4916 ÁÙ¼ö:14

Package class ¸¦ »ó¼ÓÇÒ ÀÏÀ̾ø¾î¼­ »ý°¢ ¾ÈÇØºÃ´øÀÏÀä
´Ù½Ã API¸¦ º¸´Ï Package ¸¦ »ó¼ÓÇÑ Child class¿¡¼­ È£ÃâÇÒ »ý¼ºÀÚ°¡ ¾ø³×¿ä.

Package class ´Â ±âº»»ý¼ºÀÚ¸¦ Áö¿øÇÏÁö ¾Ê½À´Ï´Ù.
¶§¹®¿¡ ÀÚ½Ä Å¬·¡½ºÀÇ »ý¼ºÀÚ¿¡¼­´Â ¸í½ÃÀûÀ¸·Î super ¶ó´Â Ű¿öµå¸¦ ÀÌ¿ëÇØ¼­
ºÎ¸ð»ý¼ºÀÚ¸¦ È£ÃâÇØ¾ß Çϴµ¥ Package class ÀÇ »ý¼ºÀÚ´Â ¸ðµÎ private ·Î 
µÇ¾î Àֱ⠶§¹®¿¡ ÀÚ½ÄÀÔÀå¿¡¼­º¸¸é ºÎ¸ð »ý¼ºÀÚ°¡ º¸ÀÌÁö°¡ ¾Ê°í,
±×·¸±â ¶§¹®¿¡ cannot resolve symbol À̶ó´Â ¸Þ½ÃÁö°¡ ³ª¿À´Â °Ì´Ï´Ù.

¶§¹®¿¡ Áö±Ý »óȲÀ¸·Î´Â Package class¸¦ Á÷Á¢ »ó¼Ó¹ÞÀ» ¼ö´Â ¾øÀ»°Å °°³×¿ä.

²À »ó¼ÓÀ» ¹Þ¾Æ¾ß ÇÑ´Ù¸é wrapper class¸¦ ¸¸µé¾î¼­ ±× Ŭ·¡½º¸¦ »ó¼Ó¹Þ´Â ½ÄÀ¸·Î
ÇØ¾ß ÇÒ °Í °°½À´Ï´Ù.
Á¦¸ñ : Re: Á¦°¡ ¾ÆÁ÷ Ãʺ¸ ¼öÁØÀ̶󼭿ä...
±Û¾´ÀÌ: ¼Õ´Ô(guest) 2006/06/30 09:34:41 Á¶È¸¼ö:5196 ÁÙ¼ö:7
¹æ¹ýÀº ¾Ë·Á Á̴ּµ¥...

¸·»ó Àß ÀÌÇØ°¡ ¾È °¡¿ä ;;

»ùÇ÷Π°£´ÜÇÏ°Ô ¸¸µé¾î ÁֽǼö´Â ¾øÀ»±î¿ä ?

±ÞÇÑ °ÍÀº ¾Æ´Ï°í¿ä... ÀÚ¹Ù¸¦ ÀÌÇØÇϴµ¥ µµ¿òÀÌ µÉ°Í °°¾Æ¼­¿ä ^^;
Á¦¸ñ : Re: °£´ÜÇÑ ¼Ò½º
±Û¾´ÀÌ: ¼Õ´Ô(guest) 2006/07/03 17:49:55 Á¶È¸¼ö:5187 ÁÙ¼ö:65

PackageWrapper.java
=======================================8X=========================================
package example;

import java.net.URL;

public class PackageWrapper {
	private Package pkg = null;
	
	public PackageWrapper(String name) {
		pkg = Package.getPackage(name);
	}
	
	// ÀÌÇÏ Package class ¿¡¼­ »ç¿ëÇÏ°í ½ÍÀº Method list
	
	public String getName() {
		return pkg.getName();
	}
	
	public boolean isSealed() {
		return pkg.isSealed();
	}
	
	public boolean isSealed(URL url) {
		return pkg.isSealed(url);
	}
	
	public String toString() {
		return pkg.toString();
	}
}

=======================================8X=========================================



Test2.java
=======================================8X=========================================
package example;


public class Test2 extends PackageWrapper {
	
	public Test2(String name) {
	    super(name);
	}
	
	public static void main(String[] args){
		Test2 t2 = new Test2("example");
		
		String name = t2.getName();
		
		System.out.println("\nPackage name is " + name);
	}
}

=======================================8X=========================================

³Ê¹« °£´ÜÇØ¼­ µüÈ÷ ¼³¸íÇÒ²² ¾ø³×¿ä...

ÀÌ·±½Äµµ °¡´ÉÇÏ´Ù¶ó´Â Àǹ̿¡¼­ ¸¸µé±â´Â ÇßÁö¸¸ ±»ÀÌ ÀÌ·¸°Ô »ç¿ëÇÒ Çʿ䰡
ÀÖ´ÂÁö´Â ¸ð¸£°Ú³×¿ä...

Á¦¸ñ : Re: ´ä±ÛÀÔ´Ï´Ù
±Û¾´ÀÌ: ¼Õ´Ô(guest) 2006/11/07 18:06:18 Á¶È¸¼ö:5862 ÁÙ¼ö:18
½Ã°£ÀÌ ¸¹ÀÌ Èê·¶³×¿ä...

Àú´Â API¸¦ ºÁ¼­´Â Àß ¸ð¸£°Ú½À´Ï´Ù.

Package Ŭ·¡½º¸¦ µðÄÄÆÄÀÏÇØº¸¾Ò½À´Ï´Ù.

µðÆúÆ® »ý¼ºÀÚ°¡ ¾ø´Â Ŭ·¡½º³×¿ä. ±×·¡¼­ constructor Package ()¸¦ 
ãÀ»¼ö ¾ø´Ù°í ¸Þ¼¼Áö°¡ ³ª¿Ô³ªº¾´Ï´Ù.

¾Æ·¡ µÎ°³ÀÇ »ý¼ºÀÚ¸¦ °®°íÀÖ½À´Ï´Ù.

public Package(ClassPath classpath, Identifier identifier)

public Package(ClassPath classpath, ClassPath classpath1, Identifier identifier)

»ó¼Ó¹ÞÀº Ŭ·¡½ºÀÇ »ý¼ºÀÚ ±¸Çö½Ã À§ÀÇ »ý¼ºÀÚÁß Çϳª¸¦ È£ÃâÇØÁÖ¸é µÇ°Ú½À´Ï´Ù.
¿¹) super.Package( À§ µÑÁßÇϳª )
: ClassPath , Identifier »ý¼º¹æ¹ýÀº...  Åð±Ù½Ã°£°ú ^^ ±ÍÂ÷´ÏÁò...
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