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±Û¾´ÀÌ :³²Áß±¸ 1999³â 9¿ù 21ÀÏ 02:41:15

In Reply to: [Ãʺ¸]SystemÀÇ Á¤Ã¼´Â? posted by ÃÖÁöÇö on 1999³â 9¿ù 08ÀÏ 00:19:18:

SystemÀº ºÐ¸íÈ÷ Ŭ·¡½ºÀÔ´Ï´Ù. ´ç¿¬ÇÑ ¾ê±âÁö¸¸...
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ÀÌ·¯ÇÑ º¯¼ö¸¦ Ŭ·¡½ºÁ¾¼ÓÀûÀ̶ó ÇÏ¿© Ŭ·¡½º º¯¼ö¶ó ÇÕ´Ï´Ù.
c¿¡¼­ ¸»ÇÏ´Â static°ú Á¶±Ý ´Ù¸¥ ¸éÀÌ ÀÖÁÒ.
(ÀÌ°ÍÀº Âü°í¼³¸íÀε¥ ½ÅÀÌ Àΰ£À» âÁ¶ÇÑ´Ù°í ÇսôÙ.
class People{
static int count=0;
People(){
count++;
}
...
}


½ÅÀº new People()·Î Àΰ£À» »ý¼ºÇÕ´Ï´Ù. »ý¼ºµÈ »ç¶÷Àº ÀڱⰡ ¸î¹ø° Àΰ£ÀÎÁö´Â °ü½ÉÀÌ
¾ø½À´Ï´Ù. ±×·¡¼­ People°´Ã¼´Â count¸¦ ¸â¹ö·Î °¡ÁöÁö ¾Ê½À´Ï´Ù.
´ÜÁö ½ÅÀº People.count¸¦ ÂüÁ¶ÇÔÀ¸·Î½á ³»°¡ ¸î³ð ¸¸µé¾ú±¸³ª¸¦ ¾Ë ¼ö ÀÖ½À´Ï´Ù.


SystemÀº ¼¼°³ÀÇ static ¸â¹ö Çʵ带 °¡Áö°í ÀÖ½À´Ï´Ù.
static PrintStream err
static InputStream in
static PrintStream out
ÀÌ ±×°ÍÀε¥ ¿©±â¼­ inÀº InputStream(java.io.InputStream)ÀÇ °´Ã¼ÀÌ°í
out˼


java.lang.Object
|
+--java.io.OutputStream
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+--java.io.FilterOutputStream
|
+--java.io.PrintStream
ÀÇ ±¸Á¶¿¡¼­ ¸Ç ¾Æ·¡ PrintStream¿¡ ÇØ´çÇÏ´Â °´Ã¼ÀÔ´Ï´Ù.
±× °´Ã¼ÀÇ ¸Þ¼Òµå(¸â¹öÇÔ¼ö)·Î½á println()À» °¡Áö°í ÀÖ½À´Ï´Ù.


System.out.println(); Çï·Î¿ì ¿ùµå ¸¸Å­À̳ª ±âÃÊÀûÀÎ ¿¹Á¦·Î ¸ðµç ±³Á¦ÀÇ Ãʹݿ¡ ³ª¿À¸é¼­µµ
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Àúµµ ÀÌ°Å ÀÌÇØÇÏ´À¶ó ¿À·¡ °É·È°Åµç¿ä ±×·³ ¶Ç..



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