JavaTM 2 Platform
Standard Ed. 5.0

java.io
Ŭ·¡½º ObjectInputStream

java.lang.Object 
  »óÀ§¸¦ È®Àå java.io.InputStream 
      »óÀ§¸¦ È®Àå java.io.ObjectInputStream
¸ðµç ±¸ÇöµÈ ÀÎÅÍÆäÀ̽º:
Closeable, DataInput, ObjectInput, ObjectStreamConstants

public class ObjectInputStream
extends InputStream
implements ObjectInput, ObjectStreamConstants

»çÀü¿¡ ObjectOutputStream¸¦ »ç¿ëÇØ ÀÛ¼ºµÈ ¿ø½ÃÀû µ¥ÀÌÅÍ¿Í ¿ø½ÃÀû °´Ã¼¸¦ Á÷·ÄÈ­ º¹¿øÇÕ´Ï´Ù.

ObjectOutputStream¿Í ObjectInputStream´Â FileOutputStream ¶Ç´Â FileInputStream¿Í ÇÔ²² »ç¿ëÇϸé, ¾îÇø®ÄÉÀ̼ǿ¡ °´Ã¼ÀÇ ±×·¡ÇÁ¸¦ À§ÇÑ Áö¼ÓÀûÀÎ ½ºÅ丮Áö¸¦ Á¦°øÇÒ ¼ö ÀÖ½À´Ï´Ù . ObjectInputStream´Â »çÀü¿¡ Á÷·ÄÈ­ µÈ °´Ã¼¸¦ ¹ÙÅÁÀ¸·Î µÇµ¹¸®±â À§Çؼ­ »ç¿ëÇÕ´Ï´Ù. ´Ù¸¥ »ç¿ë ¹æ¹ýÀ¸·Î¼­´Â ¼ÒÄÏ ½ºÆ®¸²ÀÇ »ç¿ë¿¡ ÇÑ, È£½ºÆ® »çÀÌ¿¡¼­ÀÇ °´Ã¼ÀÇ ¼ö¼ö³ª, ¸®¸ðÆ® Åë½Å ½Ã½ºÅÛ¿¡ À־ÀÇ ¼Ó¼ºÀ̳ª ÆĶó¹ÌÅÍÀÇ Á¤·ÄÀ̳ª Á¤·Ä ÇØÁ¦°¡ ÀÖ½À´Ï´Ù.

ObjectInputStream´Â ½ºÆ®¸²·ÎºÎÅÍ ÀÛ¼ºµÈ °´Ã¼ ±×·¡ÇÁ¿¡ À־ÀÇ ¸ðµç ÇüÅÂÀÇ °´Ã¼°¡ Java °¡»ó ¸Ó½Å¿¡ Á¸ÀçÇϴ Ŭ·¡½º¿¡ È®½ÇÈ÷ ¼º³É Çϵµ·Ï ÇÕ´Ï´Ù. Ŭ·¡½º´Â Ç¥ÁØÀÇ µµ±¸¸¦ »ç¿ëÇØ ÇÊ¿ä¿¡ µû¶ó¼­ ·Îµå µË´Ï´Ù.

½ºÆ®¸²·ÎºÎÅÍ ÀоîµéÀÏ ¼ö ÀÖ´Â °ÍÀº java.io.Serializable ÀÎÅÍÆäÀ̽º³ª java.io.Externalizable ÀÎÅÍÆäÀ̽º¸¦ Áö¿øÇÏ´Â °´Ã¼¸¸ÀÔ´Ï´Ù.

°´Ã¼¸¦ ½ºÆ®¸²·ÎºÎÅÍ ÀоîµéÀÌ·Á¸é readObject ¸Þ¼­µå¸¦ »ç¿ëÇÕ´Ï´Ù. Èñ¸ÁÀÇ ÇüŸ¦ ÃëµæÇÏ·Á¸é, Java ¾ÈÀüÇÑ Ä³½ºÆ®¸¦ »ç¿ëÇÒ ÇÊ¿ä°¡ ÀÖ½À´Ï´Ù. Java ¿¡¼­´Â ij¸¯ÅÍ ¶óÀΰú ¹è¿­Àº °´Ã¼·Î Á÷·ÄÈ­ÀÇ »çÀÌ´Â °´Ã¼·Î¼­ ´Ù·ç¾îÁý´Ï´Ù. ±×°ÍµéÀ» ÀоîµéÀÌ·Á¸é, Èñ¸ÁÀÇ ÇüÅ¿¡ ij½ºÆ® µÇ°í ÀÖÀ» ÇÊ¿ä°¡ ÀÖ½À´Ï´Ù.

±âº» µ¥ÀÌÅÍÇüÀ» ½ºÆ®¸²·ÎºÎÅÍ ÀоîµéÀÌ·Á¸é, DataInput ÀûÀýÇÑ ¸Þ¼­µå¸¦ »ç¿ëÇÕ´Ï´Ù.

°´Ã¼ÀÇ µðÆúÆ®ÀÇ Á÷·ÄÈ­ º¹¿ø µµ±¸´Â °¢ ÇʵåÀÇ ³»¿ëÀ» Ãâ·ÂÇØÁ³À» ¶§ »óÅ¿¡ µÇµ¹¸³´Ï´Ù. transient ¶Ç´Â static ¶ó°í ¼±¾ðµÈ Çʵå´Â Á÷·ÄÈ­ º¹¿ø 󸮿¡¼­´Â ¹«½ÃµË´Ï´Ù. ´Ù¸¥ °´Ã¼¸¦ ÂüÁ¶Çϸé, ±×·¯ÇÑ °´Ã¼´Â ÇÊ¿ä¿¡ µû¶ó¼­ ½ºÆ®¸²·ÎºÎÅÍ ÀÐÈü´Ï´Ù. °´Ã¼ÀÇ ±×·¡ÇÁ´Â ÂüÁ¶ °øÀ¯ µµ±¸¸¦ »ç¿ëÇØ ¿Ã¹Ù¸£°Ô º¹¿øµË´Ï´Ù. Á÷·ÄÈ­ º¹¿øÀ» ÇÒ ¶§´Â Ç×»ó »õ·Î¿î °´Ã¼¸¦ ÇÒ´çÇÒ ¼ö ÀÖ¾î °Å±â¿¡ µû¶ó ±âÁ¸ÀÇ °´Ã¼¿¡ÀÇ µ¡¾²±â°¡ ¹æÁöµË´Ï´Ù.

°´Ã¼ÀÇ read´Â »õ·Î¿î °´Ã¼ÀÇ »ý¼ºÀÚ ½ÇÇàÀ» ´à¾Æ ÀÖ½À´Ï´Ù. ¸Þ¸ð¸®¸¦ °´Ã¼¿¡ ÇÒ´çÇÒ ¼ö ÀÖ¾î Á¦·Î (NULL)¿¡ ÃʱâÈ­µË´Ï´Ù. Á÷·ÄÈ­ °¡´ÉÇÏÁö ¾ÊÀº Ŭ·¡½º¿¡ ´ëÇؼ­ Àμö ¾øÀ½ÀÇ »ý¼ºÀÚ°¡ ºÒ·Á °£µÚ Á÷·ÄÈ­ °¡´É Ŭ·¡½ºÀÇ Çʵ尡 java.lang.Object¿¡ °¡Àå °¡±î¿î Ŭ·¡½º·ÎºÎÅÍ ½ÃÀ۵Ǿî, °¡Àå °´Ã¼¿¡ °íÀ¯ÀÇ Å¬·¡½º¿¡¼­ ³¡³ª´Â ½ºÆ®¸²·ÎºÎÅÍ º¹¿øµË´Ï´Ù.

¿¹¸¦ µé¾î ObjectOutputStream ¿¹·Î Ãâ·ÂÇØÁø ½ºÆ®¸²·ÎºÎÅÍÀÇ read´Â ´ÙÀ½°ú °°ÀÌ ½Ç½ÃÇÕ´Ï´Ù.


        FileInputStream fis = new FileInputStream("t.tmp");
        ObjectInputStream ois = new ObjectInputStream(fis);

        int i = ois.readInt();
        String today = (String) ois.readObject();
        Date date = (Date) ois.readObject();

        ois.close();
 

Ŭ·¡½º´Â ÀÎÅÍÆäÀ̽º java.io.Serializable ¶Ç´Â java.io.Externalizable¸¦ ±¸ÇöÇÏ´Â °Í¿¡ÀÇÇØ Å¬·¡½º°¡ ¾î¶»°Ô Á÷·ÄÈ­ µÇ´ÂÁö¸¦ Á¦¾îÇÕ´Ï´Ù.

Serializable ÀÎÅÍÆäÀ̽º¸¦ ±¸ÇöÇÏ´Â °Í¿¡ÀÇÇØ °´Ã¼ÀÇ Á÷·ÄÈ­°¡ °´Ã¼ »óÅ ÀüüÀÇ º¸Á¸°ú º¹¿øÀ» ½Ç½ÃÇÏ´Â °ÍÀÌ °¡´ÉÇÏ°Ô µÇ¾î, ¶Ç Ŭ·¡½º°¡ ½ºÆ®¸²ÀÇ Ãâ·Â½Ã¿Í ½ºÆ®¸²ÀÇ read½ÃÀÇ »çÀÌ¿¡ Àü°³ÇÏ´Â °ÍÀÌ °¡´ÉÇÏ°Ô µË´Ï´Ù. °´Ã¼ÀÇ Á÷·ÄÈ­´Â °´Ã¼°£ÀÇ ÂüÁ¶¸¦ ÀÚµ¿ÀûÀ¸·Î À̵¿ÇØ, °´Ã¼ ±×·¡ÇÁÀÇ Àüü¸¦ º¸Á¸ ¹× º¹¿øÇÕ´Ï´Ù.

Á÷·ÄÈ­ ó¸®¿Í Á÷·ÄÈ­ º¹¿ø ó¸® ¶§¿¡ Ưº°ÇÑ Á¶ÀÛÀ» ÇÊ¿ä·Î ÇÏ´Â Serializable Ŭ·¡½º´Â ´ÙÀ½ÀÇ ¸Þ¼­µå¸¦ ±¸ÇöÇÒ ÇÊ¿ä°¡ ÀÖ½À´Ï´Ù.


 private void writeObject(java.io.ObjectOutputStream stream)
     throws IOException;
 private void readObject(java.io.ObjectInputStream stream)
     throws IOException, ClassNotFoundException; 
 private void readObjectNoData() 
     throws ObjectStreamException;
 

readObject ¸Þ¼­µå´Â ´ëÀÀÇÏ´Â writeObject ¸Þ¼­µå¿¡ ÀÇÇØ ½ºÆ®¸²¿¡ Ãâ·ÂÇØÁø µ¥ÀÌÅ͸¦ »ç¿ëÇϴ ƯÁ¤ÀÇ Å¬·¡½º¿¡ µµÂøÇØ, °´Ã¼ »óŸ¦ º¸Á¸ ¹× º¹¿øÇÒ Ã¥ÀÓÀ» °¡Áý´Ï´Ù. ÀÌ ¸Þ¼­µå´Â ±× ½´ÆÛ Å¬·¡½º³ª ¼­ºê Ŭ·¡½º¿¡ ¼ÓÇÏ´Â »óÅ¿¡ °ü¿©ÇÒ ÇÊ¿ä´Â ¾ø½À´Ï´Ù. »óŸ¦ º¹¿øÇÏ·Á¸é, °³°³ÀÇ Çʵ忡 µµÂøÇØ ObjectInputStream ·ÎºÎÅÍ µ¥ÀÌÅ͸¦ Àбâ, °´Ã¼ÀÇ ÀûÀýÇÑ Çʵ忡ÀÇ ÇÒ´çÀ» ½Ç½ÃÇÕ´Ï´Ù. ±âº» µ¥ÀÌÅÍÇüÀÇ read´Â DataInput¿¡ ÀÇÇØ Áö¿øµË´Ï´Ù.

°´Ã¼ µ¥ÀÌÅ͸¦ ÀоîµéÀÌ·Á°í ÇÒ °æ¿ì¿¡ ±× À§°ªÀÌ ´ëÀÀÇÏ´Â writeObject ¸Þ¼­µå¿¡ ÀÇÇØ Ãâ·ÂÇØÁø Ä¿½ºÅÒ µ¥ÀÌÅÍÀÇ °æ°è¸¦ ³Ñ°í ÀÖ´Â °æ¿ì´Â eof ÇʵåÀÇ °ªÀÌ true »óÅ·ΠOptionalDataException°¡ ¹ß»ý µË´Ï´Ù. °´Ã¼¸¦ Á÷·ÄÈ­ÇØ ÀоîµéÀÌ·Á°í ÇÒ °æ¿ì¿¡ ±× À§°ªÀÌ ÇÒ´çÇÏ°í°¡ ³¡³­ µ¥ÀÌÅÍÀÇ ¸¶Áö¸·À» ³Ñ°í ÀÖ´Â °æ¿ì´Â ½ºÆ®¸²ÀÇ °æ¿ì¿Í °°°Ô, µ¥ÀÌÅÍÀÇ ¸¶Áö¸·À» ³ªÅ¸³»´Â ¿¹¿Ü°¡ ¸®Åϵ˴ϴ٠. Áï, ¹ÙÀÌÆ® ´ÜÀ§ÀÇ read¿¡¼­´Â ¹ÙÀÌÆ®°¡ ÀÐÇûÀ» ¶§¿¡ -1°¡ ¸®Åϵ˴ϴ٠. ¿ø½ÃÀû read¿¡¼­´Â EOFException°¡ ¹ß»ý µË´Ï´Ù. ´ëÀÀÇÏ´Â writeObject ¸Þ¼­µå°¡ ¾ø´Â °æ¿ì´Â µðÆúÆ®ÀÇ Á÷·ÄÈ­ µ¥ÀÌÅÍÀÇ ¸¶Áö¸·ÀÌ ÇÒ´çÇÏ°í°¡ ³¡³­ µ¥ÀÌÅÍ°¡ ³¡³ª°Ô µË´Ï´Ù.

¿ø½ÃÀû read¿Í °´Ã¼ read°¡ readExternal ¸Þ¼­µå·ÎºÎÅÍ ºÒ·Á °¬À» °æ¿ì´Â ¾çÂÊ ¸ðµÎ ¶È°°ÀÌ µ¿ÀÛÇÕ´Ï´Ù. ½ºÆ®¸²ÀÇ À§°ªÀÌ ´ëÀÀÇÏ´Â writeExternal ¸Þ¼­µå¿¡ ÀÇÇØ Ãâ·ÂÇØÁø µ¥ÀÌÅÍÀÇ ¸¶Áö¸·¿¡ ÀÖ´Â °æ¿ì, °´Ã¼ read¿¡¼­´Â eof°¡ true ·Î ¼³Á¤µÈ »óÅ·ΠOptionalDataException°¡ Throw µÇ¾î ¹ÙÀÌÆ® ´ÜÀ§ÀÇ read¿¡¼­´Â -1 ÀÌ µ¹·ÁÁÖ°íÁ® ¿ø½ÃÀû read¿¡¼­´Â EOFException°¡ ¹ß»ý µË´Ï´Ù. ´Ù¸¸, ³°Àº ObjectStreamConstants.PROTOCOL_VERSION_1 ÇÁ·ÎÅäÄÝÀ» »ç¿ëÇØ Ãâ·ÂÇØÁø ½ºÆ®¸²¿¡¼­´Â ÀÌ µ¿ÀÛÀº Àû¿ëµÇÁö ¾Ê½À´Ï´Ù. writeExternal ¸Þ¼­µå¿Í ´Þ¸®, µ¥ÀÌÅÍÀÇ ¸¶Áö¸·ÀÌ Ãâ·ÂÇØÁöÁö ¾Ê±â ¶§¹®¿¡ µ¥ÀÌÅÍÀÇ ¸¶Áö¸·À» °ËÃâÇÒ ¼ö ¾ø±â ¶§¹®ÀÔ´Ï´Ù.

readObjectNoData ¸Þ¼­µå´Â Á÷·ÄÈ­ º¹¿øµÇ´Â °´Ã¼ÀÇ ½´ÆÛ Å¬·¡½º°¡ Á÷·ÄÈ­ ½ºÆ®¸²·Î ÁöÁ¤µÇ¾î ÀÖÁö ¾ÊÀ» ¶§¿¡ ƯÁ¤ÀÇ Å¬·¡½º¿¡ µµÂøÇØ ±× °´Ã¼ »óŸ¦ ÃʱâÈ­ÇÕ´Ï´Ù. Á÷·ÄÈ­ º¹¿øµÇ´Â ÀνºÅϽºÀÇ Å¬·¡½º°¡ ¼ö½ÅÃø°ú ¼Û½ÅÃø¿¡¼­ ´Ù¸¥ °æ¿ì³ª, ¼ö½ÅÃøÀÇ ÀνºÅϽº·Î È®ÀåµÇ°í Àִ Ŭ·¡½º°¡ ¼Û½ÅÃø¿¡¼­ È®ÀåµÇ¾î ÀÖÁö ¾ÊÀº °æ¿ì¿¡ ÀÌ·¯ÇÑ »óȲÀÌ ¹ß»ýÇÏ´Â ÀÏÀÌ ÀÖ½À´Ï´Ù. ¶Ç, Á÷·ÄÈ­ ½ºÆ®¸²ÀÌ °³ÂùµÇ°í ÀÖ´Â °æ¿ì¿¡µµ ¹ß»ýÇÕ´Ï´Ù. ¾ÇÀÇ°¡ ÀÖ´Â ¶Ç´Â ºÒ¿ÏÀüÇÑ ¼Ò½º ½ºÆ®¸²·ÎºÎÅÍ Á÷·ÄÈ­ º¹¿øÇÑ °´Ã¼¸¦ ÀûÀýÈ÷ ÃʱâÈ­ÇÒ ¶§´Â readObjectNoData¸¦ »ç¿ëÇÕ´Ï´Ù.

Á÷·ÄÈ­´Â java.io.Serializable ÀÎÅÍÆäÀ̽º¸¦ ±¸ÇöÇÏÁö ¾Ê´Â °´Ã¼ÀÇ ÇʵåÀÇ read³ª, ±×·¯ÇÑ Çʵ忡ÀÇ °ªÀÇ ÇÒ´çÀº ½Ç½ÃÇÏÁö ¾Ê½À´Ï´Ù. Á÷·ÄÈ­ °¡´ÉÇÏÁö ¾ÊÀº °´Ã¼ÀÇ ¼­ºê Ŭ·¡½º¸¦ Á÷·ÄÈ­ °¡´ÉÇÏ°Ô ÇÏ´Â °ÍÀº °¡´ÉÇÕ´Ï´Ù. ÀÌ °æ¿ì Á÷·ÄÈ­ °¡´ÉÇÏÁö ¾ÊÀº Ŭ·¡½º´Â ±× Çʵ带 ÃʱâÈ­ÇÒ ¼ö ÀÖµµ·Ï Çϱâ À§ÇÑ, Àμö ¾øÀ½ÀÇ »ý¼ºÀÚ¸¦ °¡Áú ÇÊ¿ä°¡ ÀÖ½À´Ï´Ù. ÀÌ °æ¿ì Á÷·ÄÈ­ °¡´ÉÇÏÁö ¾ÊÀº Ŭ·¡½º »óŸ¦ º¸Á¸ ¹× º¹¿øÇÏ´Â °ÍÀº ¼­ºê Ŭ·¡½ºÀÇ Ã¥ÀÓÀÌ µË´Ï´Ù. ±× Ŭ·¡½ºÀÇ Çʵ尡 ¾×¼¼½º °¡´ÉÇÑ (public, package, ¶Ç´Â protected) °æ¿ì, ȤÀº »óÅÂÀÇ º¹¿ø¿¡ ÀÌ¿ëÇÒ ¼ö ÀÖ´Â set ¸Þ¼­µå³ª get ¸Þ¼­µå°¡ ÀÖ´Â °æ¿ì°¡ ÀÚÁÖ ÀÖ½À´Ï´Ù.

°´Ã¼¸¦ Á÷·ÄÈ­ º¹¿øÇÏ´Â µ¿¾È¿¡ ¹ß»ýÇÑ ¸ðµç ¿¹¿Ü´Â ObjectInputStream¿¡ ijġ µÇ¾î read 󸮸¦ ÀÌ»óÁ¾·á(ABEND) ½Ãŵ´Ï´Ù.

Externalizable ÀÎÅÍÆäÀ̽º¸¦ ±¸ÇöÇϸé, °´Ã¼ÀÇ Á÷·ÄÈ­ µÈ Çü½ÄÀÇ ³»¿ë ¹× Çü½ÄÀ» °´Ã¼ÃøÀÌ ¿ÏÀüÇÏ°Ô Á¦¾îÇÏ´Â °ÍÀÌ °¡´ÉÇÏ°Ô µË´Ï´Ù. Externalizable ÀÎÅÍÆäÀ̽ºÀÇ ¸Þ¼­µåÀÎ writeExternal¿Í readExternal´Â °´Ã¼ »óŸ¦ º¸Á¸ ¹× º¹¿øÇϱâ À§Çؼ­ È£ÃâÇÕ´Ï´Ù. ÀÌ·¯ÇÑ ¸Þ¼­µå´Â Ŭ·¡½º¿¡ ÀÇÇØ ±¸ÇöµÇ¾úÀ» °æ¿ì¿¡´Â ObjectOutput¿Í ObjectInput ¸ðµç ¸Þ¼­µå¸¦ »ç¿ëÇØ, ÀڽŠ»óÅÂÀÇ Ãâ·Â ¹× read¸¦ ½Ç½ÃÇÒ ¼ö ÀÖ½À´Ï´Ù . ¾î¶°ÇÑ ¹öÀüÀ̾ ó¸®ÇÒ ¼ö ÀÖµµ·Ï ÇÏ´Â °ÍÀº °´Ã¼ÀÇ Ã¥ÀÓÀÔ´Ï´Ù.

enum Á¤¼ö´Â º¸Åë ÀÇ Á÷·ÄÈ­ °¡´É °´Ã¼³ª ¿ÜºÎÈ­ °¡´É °´Ã¼¿Í´Â ´Ù¸¥ ¹æ¹ýÀ¸·Î Á÷·ÄÈ­ º¹¿øµË´Ï´Ù. enum Á¤¼öÀÇ Á÷·ÄÈ­ Çü½ÄÀº À̸§¸¸À¸·Î ±¸¼ºµË´Ï´Ù. Á¤¼öÀÇ Çʵ尪´Â Àü¼Û µÇÁö ¾Ê½À´Ï´Ù. enum Á¤¼ö¸¦ Á÷·ÄÈ­ º¹¿øÇÏ·Á¸é, ObjectInputStream°¡ ½ºÆ®¸²·ÎºÎÅÍ Á¤¼öÀÇ À̸§À» ÀоîµéÀÔ´Ï´Ù. ´ÙÀ½¿¡ enum Á¤¼öÀÇ ±âÀúÇüÀ̶ó°í ¹ÞÀº Á¤¼ö¸íÀ» Àμö·Î¼­ »ç¿ëÇØ, static ¸Þ¼­µå Enum.valueOf(Class, String)¸¦ È£ÃâÇϸé Á÷·ÄÈ­ º¹¿øµÈ Á¤¼ö¸¦ ÃëµæÇÒ ¼ö ÀÖ½À´Ï´Ù. ´Ù¸¥ Á÷·ÄÈ­ °¡´É °´Ã¼ ¶Ç´Â ¿ÜºÎÈ­ °¡´É °´Ã¼¿Í °°ÀÌ, enum Á¤¼öµµ, Á÷·ÄÈ­ ½ºÆ®¸²¿¡ ³ªÁß¿¡ ³ªÅ¸³ª´Â ¿ªÂüÁ¶ÀÇ Å¸°ÙÀ¸·Î¼­ ±â´ÉÇÒ ¼ö ÀÖ½À´Ï´Ù. enum Á¤¼ö°¡ Á÷·ÄÈ­ º¹¿øµÇ´Â ¼ø¼­´Â Ä¿½ºÅ͸¶ÀÌÁî ÇÒ ¼ö ¾ø½À´Ï´Ù. Áï, enum Çü¿¡ ÀÇÇØ Á¤ÀǵÈ, Ŭ·¡½º ƯÀ¯ÀÇ readObject, readObjectNoData ¹× readResolve ¸Þ¼­µå´Â Á÷·ÄÈ­ º¹¿øµ¿¾ÈÀº ¹«½ÃµË´Ï´Ù. °°ÀÌ serialPersistentFields ¶Ç´Â serialVersionUID ÇÊµå ¼±¾ðµµ ¹«½ÃµË´Ï´Ù. ¸ðµç enum ÇüÀº serialVersionUID°¡ 0L¿¡ °íÁ¤µÇ°í ÀÖ½À´Ï´Ù.

µµÀÔµÈ ¹öÀü :
JDK1. 1
°ü·Ã Ç׸ñ:
DataInput, ObjectOutputStream, Serializable, Object Serialization Specification, Section 3, Object Input Classes

Áßø(Nested) Ŭ·¡½º °³¿ä
static class ObjectInputStream.GetField
          ÀÔ·Â ½ºÆ®¸²·ÎºÎÅÍ ÀÐÈù Áö¼Ó Çʵ忡ÀÇ ¾×¼¼½º¸¦ Á¦°øÇÕ´Ï´Ù.
 
ÇÊµå °³¿ä
 
ÀÎÅÍÆäÀ̽º java.io. ObjectStreamConstants ·ÎºÎÅÍ »ó¼ÓµÈ Çʵå
baseWireHandle, PROTOCOL_VERSION_1, PROTOCOL_VERSION_2, SC_BLOCK_DATA, SC_ENUM, SC_EXTERNALIZABLE, SC_SERIALIZABLE, SC_WRITE_METHOD, STREAM_MAGIC, STREAM_VERSION, SUBCLASS_IMPLEMENTATION_PERMISSION, SUBSTITUTION_PERMISSION, TC_ARRAY, TC_BASE, TC_BLOCKDATA, TC_BLOCKDATALONG, TC_CLASS, TC_CLASSDESC, TC_ENDBLOCKDATA, TC_ENUM, TC_EXCEPTION, TC_LONGSTRING, TC_MAX, TC_NULL, TC_OBJECT, TC_PROXYCLASSDESC, TC_REFERENCE, TC_RESET, TC_STRING
 
»ý¼ºÀÚ °³¿ä
protected ObjectInputStream ()
          ObjectInputStream¸¦ ¿ÏÀüÇÏ°Ô À籸ÇöÇÏ´Â ¼­ºê Ŭ·¡½º°¡ ObjectInputStream ÀÌ ±¸Çö¿¡ ÀÇÇØ »ç¿ëµÈÁö ¾ó¸¶ ¾ÈµÈ private µ¥ÀÌÅ͸¦ ÇÒ´çÇÒ ÇÊ¿ä°¡ ¾ø°Ô ÇÏ´Â ¼ö´ÜÀ» Á¦°øÇÕ´Ï´Ù.
  ObjectInputStream (InputStream  in)
          ÁöÁ¤µÈ InputStream ·ÎºÎÅÍ ÀоîµéÀÌ´Â ObjectInputStream¸¦ ÀÛ¼ºÇÕ´Ï´Ù.
 
¸Þ¼­µå °³¿ä
 int available ()
          ºí·Ï ÇÏÁö ¾Ê°í ÀоîµéÀÏ ¼ö ÀÖ´Â ¹ÙÀÌÆ®¼ö¸¦ ¸®ÅÏÇÕ´Ï´Ù.
 void close ()
          ÀÔ·Â ½ºÆ®¸²À» ´Ý½À´Ï´Ù.
 void defaultReadObject ()
          ÇöÀçÀÇ Å¬·¡½ºÀÇ ºñ static ¹× ºñ transient Çʵ带, ÀÌ ½ºÆ®¸²·ÎºÎÅÍ ÀоîµéÀÔ´Ï´Ù.
protected  boolean enableResolveObject (boolean enable)
          ½ºÆ®¸²·ÎºÎÅÍ ÀÐÈù °´Ã¼°¡ ġȯµË´Ï´Ù.
 int read ()
          µ¥ÀÌÅÍÀÇ ¹ÙÀÌÆ®¸¦ ÀоîµéÀÔ´Ï´Ù.
 int read (byte[] buf, int off, int len)
          ¹ÙÀÌÆ®ÀÇ ¹è¿­¿¡ ÀоîµéÀÔ´Ï´Ù.
 boolean readBoolean ()
          boolean¸¦ ÀоîµéÀÔ´Ï´Ù.
 byte readByte ()
          8 ºñÆ®ÀÇ ¹ÙÀÌÆ®¸¦ ÀоîµéÀÔ´Ï´Ù.
 char readChar ()
          16 ºñÆ®ÀÇ char¸¦ ÀоîµéÀÔ´Ï´Ù.
protected  ObjectStreamClass readClassDescriptor ()
          Á÷·ÄÈ­ ½ºÆ®¸²·ÎºÎÅÍ Å¬·¡½º ±â¼úÀÚ¸¦ ÀоîµéÀÔ´Ï´Ù.
 double readDouble ()
          64 ºñÆ®ÀÇ double¸¦ ÀоîµéÀÔ´Ï´Ù.
 ObjectInputStream.GetField readFields ()
          ½ºÆ®¸²·ÎºÎÅÍ Áö¼Ó Çʵ带 Àбâ, ±×°ÍµéÀ» À̸§À» ÁöÁ¤ÇØ ¾×¼¼½º ÇÒ ¼ö ÀÖµµ·Ï ÇÕ´Ï´Ù.
 float readFloat ()
          32 ºñÆ®ÀÇ float¸¦ ÀоîµéÀÔ´Ï´Ù.
 void readFully (byte[] buf)
          ¹ÙÀÌÆ®¸¦ ÀоîµéÀÔ´Ï´Ù.
 void readFully (byte[] buf, int off, int len)
          ¹ÙÀÌÆ®¸¦ ÀоîµéÀÔ´Ï´Ù.
 int readInt ()
          32 ºñÆ®ÀÇ int¸¦ ÀоîµéÀÔ´Ï´Ù.
 String readLine ()
          ÃßõÇÏÁö ¾Ê½À´Ï´Ù.  ÀÌ ¸Þ¼­µå´Â ¹ÙÀÌÆ®¸¦ Á¤È®ÇÏ°Ô ¹®ÀÚ·Î º¯È¯ÇÏÁö ¾Ê½À´Ï´Ù. »ó¼¼ ¹× ´ëü ¸Þ¼­µå¿¡ ´ëÇؼ­´Â DataInputStream¸¦ ÂüÁ¶ÇϽʽÿÀ.
 long readLong ()
          64 ºñÆ®ÀÇ long¸¦ ÀоîµéÀÔ´Ï´Ù.
 Object readObject ()
          ObjectInputStream ·ÎºÎÅÍ °´Ã¼¸¦ ÀоîµéÀÔ´Ï´Ù.
protected  Object readObjectOverride ()
          Àμö ¾øÀ½ÀÇ protected »ý¼ºÀÚ¸¦ »ç¿ëÇØ ObjectOutputStream¸¦ ÀÛ¼ºÇÑ ObjectOutputStream ½Å·ÚÇÒ ¼ö ÀÖ´Â ¼­ºê Ŭ·¡½º¿¡ ÀÇÇØ È£ÃâÇÕ´Ï´Ù.
 short readShort ()
          16 ºñÆ®ÀÇ short¸¦ ÀоîµéÀÔ´Ï´Ù.
protected  void readStreamHeader ()
          ¼­ºê Ŭ·¡½º°¡ ÀÚ½ÅÀÇ ½ºÆ®¸² Çì´õÀÇ read¿Í °ËÁõÀ» ½Ç½ÃÇÒ ¼ö ÀÖµµ·Ï Çϱâ À§Çؼ­ Á¦°øµÇ°í ÀÖ½À´Ï´Ù.
 Object readUnshared ()
          ObjectInputStream ·ÎºÎÅÍ ¡¸°øÀ¯µÇÁö ¾Ê´Â´Ù¡¹°´Ã¼¸¦ ÀоîµéÀÔ´Ï´Ù.
 int readUnsignedByte ()
          ºÎÈ£ ¾øÀ½ 8 ºñÆ® ¹ÙÀÌÆ®¸¦ ÀоîµéÀÔ´Ï´Ù.
 int readUnsignedShort ()
          ºÎÈ£ ¾øÀ½ 16 ºñÆ®ÀÇ short¸¦ ÀоîµéÀÔ´Ï´Ù.
 String readUTF ()
          ¼öÁ¤ UTF-8 Çü½ÄÀÇ Ä³¸¯ÅÍ ¶óÀÎÀ» ÀоîµéÀÔ´Ï´Ù.
 void registerValidation (ObjectInputValidation  obj, int prio)
          °´Ã¼ ±×·¡ÇÁ°¡ µ¹·ÁÁÖ°íÁö±â Àü¿¡ °ËÁõµÇ¾î¾ß ÇÒ °´Ã¼¸¦ µî·ÏÇÕ´Ï´Ù.
protected  Class <? > resolveClass (ObjectStreamClass  desc)
          ÁöÁ¤µÈ ½ºÆ®¸² Ŭ·¡½ºÀÇ ±â¼ú¿¡ ´ëÀÀÇÏ´Â ·ÎÄà Ŭ·¡½º¸¦ ·ÎµåÇÕ´Ï´Ù.
protected  Object resolveObject (Object  obj)
          Á÷·ÄÈ­ º¹¿ø ½Ã¿¡ ObjectInputStream ½Å·ÚÇÒ ¼ö ÀÖ´Â ¼­ºê Ŭ·¡½º°¡ ¾î´À °´Ã¼¸¦ ´Ù¸¥ °´Ã¼¿¡ ġȯÇÒ ¼ö ÀÖµµ·Ï ÇÕ´Ï´Ù.
protected  Class <? > resolveProxyClass (String [] interfaces)
          ÇÁ·Ï½Ã Ŭ·¡½º ±â¼úÀÚ·Î ÁöÁ¤µÈ ÀÎÅÍÆäÀ̽º¸¦ ±¸ÇöÇÏ´Â ÇÁ·Ï½Ã Ŭ·¡½º¸¦ ¸®ÅÏÇÕ´Ï´Ù.
 int skipBytes (int len)
          ¹ÙÀÌÆ®¸¦ ½ºÅµ ÇÕ´Ï´Ù.
 
Ŭ·¡½º java.io. InputStream ·ÎºÎÅÍ »ó¼ÓµÈ ¸Þ¼­µå
mark, markSupported, read, reset, skip
 
Ŭ·¡½º java.lang. Object ·ÎºÎÅÍ »ó¼ÓµÈ ¸Þ¼­µå
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 
ÀÎÅÍÆäÀ̽º java.io. ObjectInput ·ÎºÎÅÍ »ó¼ÓµÈ ¸Þ¼­µå
read, skip
 

»ý¼ºÀÚ »ó¼¼

ObjectInputStream

public ObjectInputStream(InputStream  in)
                  throws IOException 
ÁöÁ¤µÈ InputStream ·ÎºÎÅÍ ÀоîµéÀÌ´Â ObjectInputStream¸¦ ÀÛ¼ºÇÕ´Ï´Ù. Á÷·ÄÈ­ ½ºÆ®¸² Çì´õ´Â ½ºÆ®¸²·ÎºÎÅÍ ÀÐÈùµÚ °ËÁõµË´Ï´Ù. ÀÌ »ý¼ºÀÚ´Â ´ëÀÀÇÏ´Â ObjectOutputStream°¡ Çì´õ¸¦ Ãâ·ÂÇ÷¡½Ã ÇÒ ¶§±îÁö ºí·Ï ÇÕ´Ï´Ù.

½ÃÅ¥·¯Æ¼ ¸Å´ÏÀú°¡ ÀνºÅç µÇ°í ÀÖ´Â °æ¿ì, ObjectInputStream.readFields ¸Þ¼­µå ¶Ç´Â ObjectInputStream.readUnshared ¸Þ¼­µå¸¦ ¿À¹ö¶óÀ̵å(override) ÇÏ´Â ¼­ºê Ŭ·¡½ºÀÇ »ý¼ºÀÚ¿¡ ÀÇÇØ SerializablePermission("enableSubclassImplementation")°¡ Á÷Á¢ ¶Ç´Â °£Á¢¿¡ ºÒ·Á °¬À» ¶§¿¡ ÀÌ »ý¼ºÀÚ´Â ÀÌ Á¢±Ù ±ÇÇÑÀ» È®ÀÎÇÕ´Ï´Ù.

ÆĶó¹ÌÅÍ:
in - ÀÐÀ» ÀÔ·Â ½ºÆ®¸²
¿¹¿Ü:
StreamCorruptedException - ½ºÆ®¸² Çì´õ°¡ ºÎÁ¤ÇÑ °æ¿ì
IOException - ½ºÆ®¸² Çì´õÀÇ readÁß¿¡ ÀÔÃâ·Â ¿¡·¯°¡ ¹ß»ýÇßÀ» °æ¿ì
SecurityException - ½Å·ÚµÇ¾î ÀÖÁö ¾ÊÀº ¼­ºê Ŭ·¡½º°¡ º¸¾È»ó Áß¿äÇÑ ¸Þ¼­µå¸¦ ºÎÁ¤ÇÏ°Ô ¿À¹ö¶óÀ̵å(override) ÇßÀ» °æ¿ì
NullPointerException - in°¡ nullÀÎ °æ¿ì
°ü·Ã Ç׸ñ:
ObjectInputStream(), readFields(), ObjectOutputStream.ObjectOutputStream(OutputStream)

ObjectInputStream

protected ObjectInputStream()
                     throws IOException,

                            SecurityException 
ObjectInputStream¸¦ ¿ÏÀüÇÏ°Ô À籸ÇöÇÏ´Â ¼­ºê Ŭ·¡½º°¡ ObjectInputStream ÀÌ ±¸Çö¿¡ ÀÇÇØ »ç¿ëµÈÁö ¾ó¸¶ ¾ÈµÈ private µ¥ÀÌÅ͸¦ ÇÒ´çÇÒ ÇÊ¿ä°¡ ¾ø°Ô ÇÏ´Â ¼ö´ÜÀ» Á¦°øÇÕ´Ï´Ù.

½ÃÅ¥·¯Æ¼ ¸Å´ÏÀú°¡ ÀνºÅç µÇ°í ÀÖ´Â °æ¿ì, ÀÌ ¸Þ¼­µå´Â ¿ì¼± ½ÃÅ¥·¯Æ¼ ¸Å´ÏÀúÀÇ checkPermission ¸Þ¼­µå¸¦ Á¢±Ù ±ÇÇÑ SerializablePermission("enableSubclassImplementation")·Î È£ÃâÇØ, »ó¼Ó À¯È¿ÇÏ°Ô ÇÒ ¼ö ÀÖµµ·Ï ÇÕ´Ï´Ù.

¿¹¿Ü:
SecurityException - ½ÃÅ¥·¯Æ¼ ¸Å´ÏÀú°¡ Á¸ÀçÇØ, ±× checkPermission ¸Þ¼­µå°¡ »ó¼Ó À¯È¿ÇÏ°Ô ÇÏ´Â °ÍÀ» °ÅºÎÇßÀ» °æ¿ì
IOException
°ü·Ã Ç׸ñ:
SecurityManager.checkPermission(java.security.Permission), SerializablePermission
¸Þ¼­µåÀÇ »ó¼¼

readObject

public final Object  readObject()
                        throws IOException,

                               ClassNotFoundException 
ObjectInputStream ·ÎºÎÅÍ °´Ã¼¸¦ ÀоîµéÀÔ´Ï´Ù. °´Ã¼ÀÇ Å¬·¡½º, Ŭ·¡½ºÀÇ ½Ã±×´ÏÃÄ, Ŭ·¡½ºÀÇ ºñ transient ¹× ºñ static Çʵå¿Í ±× ½´ÆÛŸÀÔÀÇ ¸ðµç °ªÀÌ ÀÐÈü´Ï´Ù. ¾î´À Ŭ·¡½º¿¡ ´ëÇÑ µðÆúÆ®ÀÇ Á÷·ÄÈ­ º¹¿øÀº writeObject¿Í readObject ¸Þ¼­µå¸¦ »ç¿ëÇØ ¿À¹ö¶óÀ̵å(override) ÇÒ ¼ö ÀÖ½À´Ï´Ù . ÀÌ °´Ã¼¿¡ ÀÇÇØ ÂüÁ¶µÇ´Â °´Ã¼´Â Áß°£ÀûÀ¸·Î ÀÐÇô °Å±â¿¡ µû¶ó, ¿ÏÀüÇÏ°Ô µ¿µîÇÑ °´Ã¼ ±×·¡ÇÁ°¡ readObject¿¡ ÀÇÇØ À籸Ãà µË´Ï´Ù.

·çÆ® °´Ã¼´Â ÂüÁ¶ÇÏ´Â Çʵå¿Í °´Ã¼ÀÇ ¸ðµç °ÍÀÌ º¹¿øµÇ¾úÀ» ¶§, ¿ÏÀüÇÏ°Ô º¹¿øµË´Ï´Ù. ÀÌ ½ÃÁ¡¿¡¼­ ±×·¯ÇÑ µî·ÏµÈ ¿ì¼± ¼øÀ§¿¡ ±â¹ÝÇØ °´Ã¼ °ËÁõ ÄݹéÀÌ ½ÇÇàµË´Ï´Ù. ÀÌ ÄݹéÀº (Ưº°ÇÑ readObject ¸Þ¼­µåÀÇ) °´Ã¼¿¡ÀÇÇØ ±×°ÍµéÀÌ °³º°ÀûÀ¸·Î º¹¿øµÉ ¶§ µî·ÏµË´Ï´Ù.

¿¹¿Ü´Â InputStream¿¡ °üÇÑ ¹®Á¦³ª, Á÷·ÄÈ­ º¹¿øÇØ¾ß ÇÏ´Â °ÍÀÌ ¾Æ´Ñ Ŭ·¡½º¿¡ µµÂøÇØ ¹ß»ý µË´Ï´Ù. ¸ðµç ¿¹¿Ü´Â InputStream¿¡ ÀÖ¾î Ä¡¸íÀûÀ̾î, InputStream¸¦ ºÒÈ®Á¤ »óÅ·ΠÇÕ´Ï´Ù. ½ºÆ®¸² »óŸ¦ ¹«½ÃÇÒ±î ȸº¹ ó¸®Çұ °áÁ¤ÇÏ´Â °ÍÀº È£ÃâÃøÀÔ´Ï´Ù.

Á¤ÀÇ:
ÀÎÅÍÆäÀ̽º ObjectInput ³»ÀÇ readObject
¹Ýȯ°ª:
½ºÆ®¸²·ÎºÎÅÍ ÀÐÈù °´Ã¼
¿¹¿Ü:
ClassNotFoundException - Á÷·ÄÈ­ µÈ °´Ã¼ÀÇ Å¬·¡½º°¡ ¹ß°ßµÇÁö ¾Ê¾Ò´ø °æ¿ì
InvalidClassException - Á÷·ÄÈ­·Î »ç¿ëµÇ´Â Ŭ·¡½º¿¡ ÇϵîÀÇ ºÒÆíÀÌ ÀÖ¾úÀ» °æ¿ì
StreamCorruptedException - ½ºÆ®¸²ÀÇ Á¦¾î Á¤º¸¿¡ ÀÏ°ü¼ºÀÌ ¾ø´Â °æ¿ì
OptionalDataException - ¿ø½ÃÀû µ¥ÀÌÅÍ°¡ °´Ã¼°¡ ¾Æ´Ï°í ½ºÆ®¸²¿¡ ¹ß°ßµÇ¾úÀ» °æ¿ì
IOException - ÀÔÃâ·Â¿¡ °ü·ÃÇÑ ¿¹¿ÜÀÇ ¾î¶² °ÍÀΰ¡°¡ ¹ß»ýÇßÀ» °æ¿ì

readObjectOverride

protected Object  readObjectOverride()
                             throws IOException,

                                    ClassNotFoundException 
Àμö ¾øÀ½ÀÇ protected »ý¼ºÀÚ¸¦ »ç¿ëÇØ ObjectOutputStream¸¦ ÀÛ¼ºÇÑ ObjectOutputStream ½Å·ÚÇÒ ¼ö ÀÖ´Â ¼­ºê Ŭ·¡½º¿¡ ÀÇÇØ È£ÃâÇÕ´Ï´Ù. ¼­ºê Ŭ·¡½º´Â ¼ö½ÄÀÚ°¡ final ¿À¹ö¶óÀ̵å(override) ¸Þ¼­µå¸¦ Á¦°øÇÑ´Ù°í º¸¿©Áý´Ï´Ù.

¹Ýȯ°ª:
½ºÆ®¸²·ÎºÎÅÍ ÀÐÈù °´Ã¼
¿¹¿Ü:
ClassNotFoundException - Á÷·ÄÈ­ µÈ °´Ã¼ÀÇ Å¬·¡½º°¡ ¹ß°ßµÇÁö ¾Ê¾Ò´ø °æ¿ì
OptionalDataException - ¿ø½ÃÀû µ¥ÀÌÅÍ°¡ °´Ã¼°¡ ¾Æ´Ï°í ½ºÆ®¸²¿¡ ¹ß°ßµÇ¾úÀ» °æ¿ì
IOException - ±âº»ÀÌ µÇ´Â ½ºÆ®¸²ÀÇ readÁß¿¡ ÀÔÃâ·Â ¿¡·¯°¡ ¹ß»ýÇßÀ» °æ¿ì
µµÀÔµÈ ¹öÀü :
1.2
°ü·Ã Ç׸ñ:
ObjectInputStream(), readObject()

readUnshared

public Object  readUnshared()
                    throws IOException,

                           ClassNotFoundException 
ObjectInputStream ·ÎºÎÅÍ ¡¸°øÀ¯µÇÁö ¾Ê´Â´Ù¡¹°´Ã¼¸¦ ÀоîµéÀÔ´Ï´Ù. ÀÌ ¸Þ¼­µå´Â readObject¿Í ´à¾Æ ÀÖ½À´Ï´Ù. ´Ù¸¸, readObject ¹× readUnshared¸¦ È£ÃâÇØ, ÀÌ È£ÃâÀÌ ÃëµæÇÑ Á÷·ÄÈ­ º¹¿øµÈ ÀνºÅϽº¿¡ ´ëÇÑ ÂüÁ¶¸¦ µ¹·ÁÁÙ ¼ö ¾ø½À´Ï´Ù. ¿¹¸¦ µé¾î ´ÙÀ½°ú °°Àº ÂüÁ¶´Â ÇÒ ¼ö ¾ø½À´Ï´Ù. readUnshared¸¦ È£ÃâÇØ °´Ã¼¸¦ Á÷·ÄÈ­ º¹¿øÇϸé, ¸®ÅÏµÈ °´Ã¼¿¡ °ü·ÃµÈ ½ºÆ®¸² ÇÚµéÀÌ ¹«È¿°¡ µË´Ï´Ù. ´Ù¸¸, readUnshared ·ÎºÎÅÍ ¸®ÅÏµÈ ÂüÁ¶°¡ ÀÏÀÇÀÌ´Ù°í´Â ÇÒ ¼ö ¾ø½À´Ï´Ù. Á÷·ÄÈ­ º¹¿øµÈ °´Ã¼¿¡ readResolve ¸Þ¼­µå°¡ Á¤Àǵǰí ÀÖ¾úÀ» °æ¿ì, °øÀ¯µÇ°í ÀÖ´Â °´Ã¼°¡ ¸®ÅÏµÈ ÀÏÀÌ ÀÖ½À´Ï´Ù. ¶Ç, ±× ½ºÆ®¸²¿ÜÀÇ Àå¼Ò³ª ¿ÜºÎ·ÎºÎÅÍ ÃëµæÇÑ Class °´Ã¼ ¶Ç´Â enum Á¤¼ö¸¦ µ¹·ÁÁÖ´Â Àϵµ ÀÖ½À´Ï´Ù.

´Ù¸¸, º¹¿øµÈ °´Ã¼°¡ enum Á¤¼ö ¶Ç´Â java.lang.Class ÀνºÅϽº°¡ ¾Æ´Ï°í, readResolve ¸Þ¼­µå¸¦ Á¤ÀÇÇÏ°í ÀÖÁö ¾Ê´Â °æ¿ì, readUnshared ·ÎºÎÅÍ ¸®ÅÏµÈ °´Ã¼ ÂüÁ¶´Â Ç×»ó ÀÏÀÇÀÔ´Ï´Ù. ¹ÙÅÁÀ¸·Î µÇ´Â µ¥ÀÌÅÍ ½ºÆ®¸²ÀÌ Á¶À۵ǰí ÀÖ´Â °æ¿ì¿¡¼­µµ, ±×°ÍÀ» ÀÛ¼ºÇÑ ObjectInputStream ·ÎºÎÅÍ °´Ã¼ ÂüÁ¶¸¦ ÀçÂ÷ ÃëµæÇÒ ¼ö ¾ø½À´Ï´Ù. ÀÌ ±ÔÄ¢Àº readUnshared ·ÎºÎÅÍ ¸®ÅÏµÈ º£À̽º ·¹º§ÀÇ °´Ã¼ÀÎ ¸¸Å­ Àû¿ëµÇ¾î ¸®ÅÏµÈ °´Ã¼ ±×·¡ÇÁ³»¿¡¼­ ÂüÁ¶µÇ´Â ¼­ºê °´Ã¼¿¡´Â Àû¿ëµÇÁö ¾Ê½À´Ï´Ù.

ÀÌ ¸Þ¼­µå¸¦ ¿À¹ö¶óÀ̵å(override) ÇÏ´Â ObjectInputStream ¼­ºê Ŭ·¡½º´Â SerializablePermission("enableSubclassImplementation")¸¦ °¡Áö´Â ½ÃÅ¥·¯Æ¼ ÄÁÅؽºÆ® ³»¿¡¼­¸¸ ±¸ÃàÇÒ ¼ö ÀÖ½À´Ï´Ù. ÀÌ Á¢±Ù ±ÇÇÑÀ» °¡ÁöÁö ¾Ê´Â ½ÃÅ¥·¯Æ¼ ÄÁÅؽºÆ® À¸·Î ÀνºÅϽºÈ­ÇÏ·Á°í Çϸé, SecurityException°¡ ¹ß»ý µË´Ï´Ù.

¹Ýȯ°ª:
Á÷·ÄÈ­ º¹¿ø °´Ã¼¿¡ÀÇ ÂüÁ¶
¿¹¿Ü:
ClassNotFoundException - Á÷·ÄÈ­ º¹¿øÇÏ´Â °´Ã¼ÀÇ Å¬·¡½º°¡ ¹ß°ßµÇÁö ¾Ê¾Ò´ø °æ¿ì
StreamCorruptedException - ½ºÆ®¸²ÀÇ Á¦¾î Á¤º¸¿¡ ÀÏ°ü¼ºÀÌ ¾ø´Â °æ¿ì
ObjectStreamException - Á÷·ÄÈ­ º¹¿øÇÏ´Â °´Ã¼°¡ ÀÌ¹Ì ½ºÆ®¸²³»¿¡ ÀÖ¾úÀ» °æ¿ì
OptionalDataException - ½ºÆ®¸²³»ÀÇ ´ÙÀ½ÀÇ µ¥ÀÌÅÍ°¡ ¿ø½ÃÀûÀÇ °æ¿ì
IOException - Á÷·ÄÈ­ º¹¿øÁß¿¡ ÀÔÃâ·Â ¿¡·¯°¡ ¹ß»ýÇßÀ» °æ¿ì

defaultReadObject

public void defaultReadObject()
                       throws IOException,

                              ClassNotFoundException 
ÇöÀçÀÇ Å¬·¡½ºÀÇ ºñ static ¹× ºñ transient Çʵ带, ÀÌ ½ºÆ®¸²·ÎºÎÅÍ ÀоîµéÀÔ´Ï´Ù. ÀÌ ¸Þ¼­µå¸¦ È£ÃâÇÒ ¼ö ÀÖ´Â °ÍÀº Á÷·ÄÈ­°¡ º¹¿øµÇ°í Àִ Ŭ·¡½ºÀÇ readObject ¸Þ¼­µå »ÓÀÔ´Ï´Ù. ´Ù¸¥ ¹æ¹ýÀ¸·Î ºÒ·Á °¬À» °æ¿ì´Â NotActiveExceptionÀ» Throw ÇÕ´Ï´Ù.

¿¹¿Ü:
ClassNotFoundException - Á÷·ÄÈ­ µÈ °´Ã¼ÀÇ Å¬·¡½º°¡ ¹ß°ßµÇÁö ¾Ê¾Ò´ø °æ¿ì
IOException - ÀÔÃâ·Â ¿¡·¯°¡ ¹ß»ýÇßÀ» °æ¿ì
NotActiveException - ½ºÆ®¸²ÀÌ ÇöÀç °´Ã¼¸¦ ÀоîµéÀÌÁö ¾ÊÀº °æ¿ì

readFields

public ObjectInputStream.GetField  readFields()
                                      throws IOException,

                                             ClassNotFoundException 
½ºÆ®¸²·ÎºÎÅÍ Áö¼Ó Çʵ带 Àбâ, ±×°ÍµéÀ» À̸§À» ÁöÁ¤ÇØ ¾×¼¼½º ÇÒ ¼ö ÀÖµµ·Ï ÇÕ´Ï´Ù.

¹Ýȯ°ª:
Á÷·ÄÈ­ º¹¿øµÇ°í ÀÖ´Â °´Ã¼ÀÇ Áö¼Ó Çʵ带 ³ªÅ¸³»´Â GetField °´Ã¼
¿¹¿Ü:
ClassNotFoundException - Á÷·ÄÈ­ µÈ °´Ã¼ÀÇ Å¬·¡½º°¡ ¹ß°ßµÇÁö ¾Ê¾Ò´ø °æ¿ì
IOException - ÀÔÃâ·Â ¿¡·¯°¡ ¹ß»ýÇßÀ» °æ¿ì
NotActiveException - ½ºÆ®¸²ÀÌ ÇöÀç °´Ã¼¸¦ ÀоîµéÀÌÁö ¾ÊÀº °æ¿ì
µµÀÔµÈ ¹öÀü :
1.2

registerValidation

public void registerValidation(ObjectInputValidation  obj,
                               int prio)
                        throws NotActiveException,

                               InvalidObjectException 
°´Ã¼ ±×·¡ÇÁ°¡ µ¹·ÁÁÖ°íÁö±â Àü¿¡ °ËÁõµÇ¾î¾ß ÇÒ °´Ã¼¸¦ µî·ÏÇÕ´Ï´Ù. ÀÌ °ËÁõÀº resolveObject¸¦ ´à¾Æ ÀÖ½À´Ï´Ù¸¸, °´Ã¼ ±×·¡ÇÁ Àüü°¡ À籸Ãà µÈ µÚ¿¡ È£ÃâµÇ´Â Á¡ÀÌ ´Ù¸¨´Ï´Ù. º¸Åë, readObject ¸Þ¼­µå´Â ½ºÆ®¸²°ú ÇÔ²² °´Ã¼¸¦ µî·ÏÇØ, °Å±â¿¡ µû¶ó °´Ã¼ÀÇ ¸ðµç °ÍÀÌ º¹¿øµÇ¾úÀ» ¶§¿¡ ÃÖÁ¾ÀûÀÎ °ËÁõÀ» ½ÇÇàÇÒ ¼ö ÀÖµµ·Ï ÇÕ´Ï´Ù.

ÆĶó¹ÌÅÍ:
obj - °ËÁõÀÇ ÄݹéÀ» ¹Þ´Â °´Ã¼
prio - ÄݹéÀÇ ¼ø¼­¸¦ Á¦¾îÇÏ´Â °ª. 0 ÀÌ ÀûÀýÇÑ ±âº»°ªÀÌ´Ù. »¡¸® Äݹé ÇÏ´Â °æ¿ì´Â Å« ¹øÈ£¸¦, ³ªÁß¿¡ Äݹé ÇÏ´Â °æ¿ì´Â ÀÛÀº ¹øÈ£¸¦ »ç¿ëÇÑ´Ù. °°Àº ¿ì¼± ¼øÀ§³»¿¡¼­´Â ÄݹéÀÇ Ã³¸®¿¡ Ưº°ÇÑ ¼ø¼­´Â ¾ø´Ù
¿¹¿Ü:
NotActiveException - ½ºÆ®¸²ÀÌ ÇöÀç °´Ã¼¸¦ ÀоîµéÀÌÁö ¾Ê±â ¶§¹®¿¡ ÄݹéÀ» µî·ÏÇÒ ¼ö ¾ø´Â °æ¿ì
InvalidObjectException - °ËÁõ °´Ã¼°¡ nullÀÎ °æ¿ì

resolveClass

protected Class <? > resolveClass(ObjectStreamClass  desc)
                         throws IOException,

                                ClassNotFoundException 
ÁöÁ¤µÈ ½ºÆ®¸² Ŭ·¡½ºÀÇ ±â¼ú¿¡ ´ëÀÀÇÏ´Â ·ÎÄà Ŭ·¡½º¸¦ ·ÎµåÇÕ´Ï´Ù. ¼­ºê Ŭ·¡½º´Â ÀÌ ¸Þ¼­µå¸¦ ±¸ÇöÇØ, ´ëü ¼Ò½º·ÎºÎÅÍ Å¬·¡½º¸¦ ÃëµæÇÕ´Ï´Ù.

ObjectOutputStream ´ëÀÀÇÏ´Â ¸Þ¼­µå´Â annotateClass ÀÔ´Ï´Ù. ÀÌ ¸Þ¼­µå´Â ½ºÆ®¸²ÀÇ ÀÏÀÇÀÇ Å¬·¡½º °¢°¢ ºÙ¾î 1ȸ ¸¸ È£ÃâÇÕ´Ï´Ù. ÀÌ ¸Þ¼­µå´Â ´ëüÀÇ ·Îµå µµ±¸¸¦ »ç¿ëÇϱâ À§Çؼ­ ±¸ÇöÇÒ ¼ö ÀÖ½À´Ï´Ù ¸¸, Class °´Ã¼¸¦ µ¹·ÁÁÙ ÇÊ¿ä°¡ ÀÖ½À´Ï´Ù. Ŭ·¡½º °´Ã¼°¡ µ¹·ÁÁÖ°íÁö¸é, ±× Ŭ·¡½ºÀÇ serialVersionUID °¡ Á÷·ÄÈ­ µÈ Ŭ·¡½ºÀÇ serialVersionUID ¶ó°í ºñ±³µË´Ï´Ù. ºÒÀÏ°ªÀÌ ÀÖÀ¸¸é, Á÷·ÄÈ­ º¹¿ø¿¡ ºÒÆíÀÌ ¹ß»ýÇØ, ¿¹¿Ü°¡ È£ÃâµË´Ï´Ù.

µðÆúÆ®¿¡¼­´Â Ŭ·¡½º¸íÀº, readObject¸¦ È£ÃâÇÑ Å¬·¡½º¿Í ´ëÀÀ ºÙ¿© ÇØ°áµË´Ï´Ù.

ÆĶó¹ÌÅÍ:
desc - ObjectStreamClass Ŭ·¡½ºÀÇ ÀνºÅϽº
¹Ýȯ°ª:
desc¿¡ ´ëÀÀÇÏ´Â Class °´Ã¼
¿¹¿Ü:
IOException - º¸Åë ÀÇ ÀÔÃâ·Â °ü·ÃÀÇ ¿¹¿Ü°¡ ¹ß»ýÇßÀ» °æ¿ì
ClassNotFoundException - Á÷·ÄÈ­ µÈ °´Ã¼°¡ ¹ß°ßµÇÁö ¾Ê¾Ò´ø °æ¿ì

resolveProxyClass

protected Class <? > resolveProxyClass(String [] interfaces)
                              throws IOException,

                                     ClassNotFoundException 
ÇÁ·Ï½Ã Ŭ·¡½º ±â¼úÀÚ·Î ÁöÁ¤µÈ ÀÎÅÍÆäÀ̽º¸¦ ±¸ÇöÇÏ´Â ÇÁ·Ï½Ã Ŭ·¡½º¸¦ ¸®ÅÏÇÕ´Ï´Ù. ¼­ºê Ŭ·¡½º´Â ÀÌ ¸Þ¼­µå¸¦ ±¸ÇöÇØ ´ÙÀ̳ª¹Í ÇÁ·Ï½Ã Ŭ·¡½ºÀÇ ±â¼úÀÚ¿Í ÇÔ²² ½ºÆ®¸²·ÎºÎÅÍ Ä¿½ºÅÒ µ¥ÀÌÅ͸¦ Àбâ, ÀÎÅÍÆäÀ̽º³ª ÇÁ·Ï½Ã Ŭ·¡½ºÀÇ ´ëü ·Îµù µµ±¸¸¦ »ç¿ëÇÒ ¼ö ÀÖµµ·Ï ÇÕ´Ï´Ù.

ÀÌ ¸Þ¼­µå´Â ½ºÆ®¸²ÀÇ ÀÏÀÇÀÇ °¢ ÇÁ·Ï½Ã Ŭ·¡½º ±â¼úÀÚ¿¡ ´ëÇØ 1ȸ ¸¸ È£ÃâÇÕ´Ï´Ù.

ObjectOutputStream¿¡ ¼­ÀÇ ´ëÀÀÇÏ´Â ¸Þ¼­µå´Â annotateProxyClass ÀÔ´Ï´Ù. ÀÌ ¸Þ¼­µå¸¦ ¿À¹ö¶óÀ̵å(override) ÇÏ´Â ÁöÁ¤µÈ ¼­ºê Ŭ·¡½º ObjectInputStream¿¡ ´ëÇؼ­ ObjectOutputStream ´ëÀÀÇÏ´Â ¼­ºê Ŭ·¡½º¿¡ ÀÖ´Â annotateProxyClass ¸Þ¼­µå´Â ÀÌ ¸Þ¼­µå°¡ ÀоîµéÀÌ´Â ÀÓÀÇÀÇ µ¥ÀÌÅÍ ¶Ç´Â °´Ã¼¸¦ Ãâ·ÂÇÒ ÇÊ¿ä°¡ ÀÖ½À´Ï´Ù.

ObjectInputStream¿¡ ÀÖ´Â ÀÌ ¸Þ¼­µåÀÇ µðÆúÆ® ±¸ÇöÀº, interfaces ÆĶó¹ÌÅÍ·Î ÁöÁ¤µÈ ÀÎÅÍÆäÀ̽ºÀÇ Class °´Ã¼ÀÇ ¸®½ºÆ®¿Í ÇÔ²² Proxy.getProxyClass È£Ãâ °á°ú¸¦ ¸®ÅÏÇÕ´Ï´Ù. °¢ ÀÎÅÍÆäÀ̽º¸í i Class °´Ã¼°¡ ¸®Åϵ˴ϴ٠.


     Class.forName(i, false, loader)
 
¿©±â¼­ loader´Â ½ÇÇà ½ºÅñîÁöÀÇ ÃÖÃÊÀÇ nullÀÌ ¾Æ´Ñ Ŭ·¡½º, ¶Ç´Â nullÀÌ ¾Æ´Ñ Ŭ·¡½º ·Î´õ°¡ ½ºÅÃÃø (resolveClass ¸Þ¼­µå°¡ »ç¿ëÇÏ´Â °°Àº Ŭ·¡½º ·Î´õÀÇ ¼±ÅÃ)¿¡ ¾ø´Â °æ¿ì´Â null ÀÔ´Ï´Ù. ÇØ°áµÈ ÀÎÅÍÆäÀ̽º°¡ public°¡ ¾Æ´Ñ °æ¿ì´Â °°Àº °ªÀÇ loader°¡ Proxy.getProxyClass¿¡ °Ô °Ç³×Áý´Ï´Ù. public°¡ ¾Æ´Ñ ÀÎÅÍÆäÀ̽º°¡ ÀÖ´Â °æ¿ì´Â ±× Ŭ·¡½º ·Î´õ°¡ °Ç³×¹Þ½À´Ï´Ù (public°¡ ¾Æ´Ñ ÀÎÅÍÆäÀ̽ºÀÇ Å¬·¡½º ·Î´õ°¡ º¹¼ö °ËÃâµÇ¾úÀ» °æ¿ì´Â IllegalAccessError°¡ Throw µÈ´Ù). Proxy.getProxyClass°¡ IllegalArgumentExceptionÀ» Throw Çϸé, resolveProxyClass´Â IllegalArgumentException¿Í ÇÔ²² ClassNotFoundExceptionÀ» Throw ÇÕ´Ï´Ù.

ÆĶó¹ÌÅÍ:
interfaces - ÇÁ·Ï½Ã Ŭ·¡½º ±â¼úÀÚ¿¡°Ô Á÷·ÄÈ­ º¹¿øµÈ ÀÎÅÍÆäÀ̽º¸íÀÇ ¸®½ºÆ®
¹Ýȯ°ª:
ÁöÁ¤µÈ ÀÎÅÍÆäÀ̽ºÀÇ ÇÁ·Ï½Ã Ŭ·¡½º
¿¹¿Ü:
IOException - ±âº»ÀÌ µÇ´Â InputStream¿¡ ¿¹¿Ü°¡ ¹ß»ýÇßÀ» °æ¿ì
ClassNotFoundException - ÇÁ·Ï½Ã Ŭ·¡½º ¶Ç´Â ÁöÁ¤µÈ ÀÎÅÍÆäÀ̽º°¡ ¾î´À °Íµµ ¹ß°ßµÇÁö ¾Ê¾Ò´ø °æ¿ì
µµÀÔµÈ ¹öÀü :
1.3
°ü·Ã Ç׸ñ:
ObjectOutputStream.annotateProxyClass(Class)

resolveObject

protected Object  resolveObject(Object  obj)
                        throws IOException 
Á÷·ÄÈ­ º¹¿ø ½Ã¿¡ ObjectInputStream ½Å·ÚÇÒ ¼ö ÀÖ´Â ¼­ºê Ŭ·¡½º°¡ ¾î´À °´Ã¼¸¦ ´Ù¸¥ °´Ã¼¿¡ ġȯÇÒ ¼ö ÀÖµµ·Ï ÇÕ´Ï´Ù. °´Ã¼ÀÇ Ä¡È¯Àº enableResolveObject°¡ ºÒ·Á °¥ ¶§±îÁö´Â ½Ç½ÃÇÒ ¼ö ¾ø½À´Ï´Ù. enableResolveObject ¸Þ¼­µå´Â °´Ã¼ÀÇ Çؼ® 󸮸¦ ¿ä±¸ÇÏ°í ÀÖ´Â ½ºÆ®¸²À» ½Å·ÚÇÒ ¼ö ÀÖÀ»Áö ¾î¶³Áö¸¦ Á¶»çÇÕ´Ï´Ù. Á÷·ÄÈ­ °¡´É °´Ã¼¿¡ÀÇ ¸ðµç ÂüÁ¶´Â resolveObject ¿¡°Ô °Ç³×Áý´Ï´Ù. °´Ã¼ÀÇ private ÀÎ »óÅ°¡ µµÇÏÁö ¾Ê°í ´©¼³ ÇÏ´Â °ÍÀÌ ¾ø°Ô, resolveObject¸¦ »ç¿ëÇÏ´Â °ÍÀº ½Å·ÚÇÒ ¼ö ÀÖ´Â ½ºÆ®¸²·Î ÇÑÁ¤µË´Ï´Ù.

ÀÌ ¸Þ¼­µå´Â °´Ã¼°¡ ÀÐÈùµÚ readObject ·ÎºÎÅÍ º¹±ÍÇϱâ Àü¿¡ È£ÃâÇÕ´Ï´Ù. µðÆúÆ®ÀÇ resolveObject ¸Þ¼­µå´Â °°Àº °´Ã¼¸¸À» ¸®ÅÏÇÕ´Ï´Ù.

¼­ºê Ŭ·¡½º´Â °´Ã¼¸¦ ġȯÇÒ ¶§, ġȯµÈ °´Ã¼¿Í ÂüÁ¶°¡ Æ÷ÇԵǴ °¢ Çʵå¿ÍÀÇ È£È¯¼ºÀ» º¸ÁõÇÒ ÇÊ¿ä°¡ ÀÖ½À´Ï´Ù. ÇÊµå ¶Ç´Â ¹è¿­ ¿ä¼ÒÀÇ ÇüÅÂÀÇ ¼­ºê Ŭ·¡½º°¡ ¾Æ´Ñ ÇüÅÂÀÇ °´Ã¼´Â ¿¹¿Ü¸¦ ¹ß»ý½ÃÅ°´Â °Í¿¡ ÀÇÇØ Á÷·ÄÈ­¸¦ Áß´ÜÇØ, ±× °á°ú °´Ã¼´Â Æ÷ÇÔµÇÁö ¾Ê½À´Ï´Ù.

ÀÌ ¸Þ¼­µå´Â °¢ °´Ã¼°¡ ÃÖÃÊ·Î °ËÃâµÇ¾úÀ» ¶§¿¡ 1ȸ ¸¸ È£ÃâÇÕ´Ï´Ù. ÀÌ°Í ÀÌÈÄ °ËÃâµÇ´Â ±× °´Ã¼¿¡ÀÇ ÂüÁ¶´Â »õ·Î¿î °´Ã¼¿¡ ¸®´ÙÀÌ·ºÆ® µË´Ï´Ù.

ÆĶó¹ÌÅÍ:
obj - ġȯµÇ´Â °´Ã¼
¹Ýȯ°ª:
ġȯµÈ °´Ã¼
¿¹¿Ü:
IOException - º¸Åë ÀÇ ÀÔÃâ·Â °ü·ÃÀÇ ¿¹¿Ü°¡ ¹ß»ýÇßÀ» °æ¿ì

enableResolveObject

protected boolean enableResolveObject(boolean enable)
                               throws SecurityException 
½ºÆ®¸²·ÎºÎÅÍ ÀÐÈù °´Ã¼°¡ ġȯµË´Ï´Ù. À¯È¿ÇÏ°Ô Çϸé, °´Ã¼°¡ Á÷·ÄÈ­ º¹¿øµÉ ¶§, Ç×»ó resolveObject ¸Þ¼­µå°¡ È£ÃâµË´Ï´Ù.

enable°¡ true ·Î ½ÃÅ¥·¯Æ¼ ¸Å´ÏÀú°¡ ÀνºÅç µÇ°í ÀÖ´Â °æ¿ì, ÀÌ ¸Þ¼­µå´Â ¿ì¼± ½ÃÅ¥·¯Æ¼ ¸Å´ÏÀúÀÇ checkPermission ¸Þ¼­µå¸¦ Á¢±Ù ±ÇÇÑ SerializablePermission("enableSubstitution")·Î È£ÃâÇØ, ½ºÆ®¸²·ÎºÎÅÍ ÀÐÈù °´Ã¼ÀÇ Ä¡È¯À» ½ºÆ®¸²À» Çã°¡ÇÒ ¼ö ÀÖµµ·Ï ÇÕ´Ï´Ù.

ÆĶó¹ÌÅÍ:
enable - Á÷·ÄÈ­ º¹¿øµÇ´Â °¢ °´Ã¼¿¡ ´ëÇØ resolveObject »ç¿ëÀ» À¯È¿ÇÏ°Ô ÇÏ´Â °æ¿ì´Â true
¹Ýȯ°ª:
ÀÌ ¸Þ¼­µå°¡ ºÒ·Á°¡±â ÀüÀÇ ¼³Á¤
¿¹¿Ü:
SecurityException - ½ÃÅ¥·¯Æ¼ ¸Å´ÏÀú°¡ Á¸ÀçÇØ, ±× checkPermission ¸Þ¼­µå°¡ ½ºÆ®¸²·ÎºÎÅÍ ÀÐÈù °´Ã¼ÀÇ Ä¡È¯À» ½ºÆ®¸²À» Çã°¡ÇÒ ¼ö ÀÖµµ·Ï ÇÏ´Â °ÍÀ» °ÅºÎÇÏ´Â °æ¿ì
°ü·Ã Ç׸ñ:
SecurityManager.checkPermission(java.security.Permission), SerializablePermission

readStreamHeader

protected void readStreamHeader()
                         throws IOException,

                                StreamCorruptedException 
¼­ºê Ŭ·¡½º°¡ ÀÚ½ÅÀÇ ½ºÆ®¸² Çì´õÀÇ read¿Í °ËÁõÀ» ½Ç½ÃÇÒ ¼ö ÀÖµµ·Ï Çϱâ À§Çؼ­ Á¦°øµÇ°í ÀÖ½À´Ï´Ù. ÀÌ ¸Þ¼­µå´Â ¸ÅÁ÷ ¹øÈ£¿Í ¹öÀü ¹øÈ£¸¦ ÀоîµéÀÔ´Ï´Ù.

¿¹¿Ü:
IOException - ±âº»ÀÌ µÇ´Â InputStream readÁß¿¡ ÀÔÃâ·Â ¿¡·¯°¡ ¹ß»ýÇßÀ» °æ¿ì
StreamCorruptedException - ½ºÆ®¸²ÀÇ Á¦¾î Á¤º¸¿¡ ÀÏ°ü¼ºÀÌ ¾ø´Â °æ¿ì

readClassDescriptor

protected ObjectStreamClass  readClassDescriptor()
                                         throws IOException,

                                                ClassNotFoundException 
Á÷·ÄÈ­ ½ºÆ®¸²·ÎºÎÅÍ Å¬·¡½º ±â¼úÀÚ¸¦ ÀоîµéÀÔ´Ï´Ù. ÀÌ ¸Þ¼­µå´Â ObjectInputStream°¡ Á÷·ÄÈ­ ½ºÆ®¸²ÀÇ ´ÙÀ½ÀÇÀÚ½Ä ÅÛÀ¸·Î¼­ Ŭ·¡½º ±â¼úÀÚ¸¦ ¿ä±¸Çϸé È£ÃâÇÕ´Ï´Ù. ObjectInputStream ¼­ºê Ŭ·¡½º´Â ÀÌ ¸Þ¼­µå¸¦ ¿À¹ö¶óÀ̵å(override)ÀÇÇØ Ç¥ÁØÀÌ ¾Æ´Ñ Çü½Ä¿¡¼­ (writeClassDescriptor ¸Þ¼­µå¸¦ ¿À¹ö¶óÀ̵å(override) ÇÑ ObjectOutputStream ¼­ºê Ŭ·¡½º¿¡ ÇØ) Ãâ·ÂÇØÁø Ŭ·¡½º ±â¼úÀÚ¿¡°Ô ÀоîµéÀÔ´Ï´Ù. µðÆúÆ®¿¡¼­´Â ÀÌ ¸Þ¼­µå´Â Ŭ·¡½º ±â¼úÀÚ¸¦ °´Ã¼ Á÷·ÄÈ­ »ç¾ç¿¡ Á¤ÀÇµÈ Çü½Ä¿¡¼­ ÀоîµéÀÔ´Ï´Ù.

¹Ýȯ°ª:
ÀÐÈù Ŭ·¡½º ±â¼úÀÚ
¿¹¿Ü:
IOException - ÀÔÃâ·Â ¿¡·¯°¡ ¹ß»ýÇßÀ» °æ¿ì
ClassNotFoundException - Ŭ·¡½º ±â¼úÀÚ Ç¥Çö¿¡ »ç¿ëÇÑ Á÷·ÄÈ­ µÈ °´Ã¼ÀÇ Å¬·¡½º°¡ ¹ß°ßµÇÁö ¾Ê¾Ò´ø °æ¿ì
µµÀÔµÈ ¹öÀü :
1.3
°ü·Ã Ç׸ñ:
ObjectOutputStream.writeClassDescriptor(java.io.ObjectStreamClass)

read

public int read()
         throws IOException 
µ¥ÀÌÅÍÀÇ ¹ÙÀÌÆ®¸¦ ÀоîµéÀÔ´Ï´Ù. ÀÌ ¸Þ¼­µå´Â À¯È¿ÇÑ ÀÔ·ÂÀÌ ¾ÆÁ÷ ¾ø´Â °æ¿ì´Â ºí·Ï ÇÕ´Ï´Ù.

Á¤ÀÇ:
ÀÎÅÍÆäÀ̽º ObjectInput ³»ÀÇ read
Á¤ÀÇ:
Ŭ·¡½º InputStream ³»ÀÇ read
¹Ýȯ°ª:
ÀÐÈù ¹ÙÀÌÆ®. ½ºÆ®¸²ÀÇ ¸¶Áö¸·¿¡ À̸£·¶À» °æ¿ì´Â -1
¿¹¿Ü:
IOException - ÀÔÃâ·Â ¿¡·¯°¡ ¹ß»ýÇßÀ» °æ¿ì

read

public int read(byte[] buf,
                int off,
                int len)
         throws IOException 
¹ÙÀÌÆ®ÀÇ ¹è¿­¿¡ ÀоîµéÀÔ´Ï´Ù. ÀÌ ¸Þ¼­µå´Â ÀÔ·ÂÀ» ÇÒ ¼ö ÀÖ°Ô µÉ ¶§±îÁö ºí·Ï ÇÕ´Ï´Ù. ¹ÙÀÌÆ®ÀÇ ±æÀ̸¦ Á¤È®ÇÏ°Ô ÀоîµéÀÌ·Á¸é, java.io.DataInputStream.readFully¸¦ »ç¿ëÇØ ÁÖ¼¼¿ä.

Á¤ÀÇ:
ÀÎÅÍÆäÀ̽º ObjectInput ³»ÀÇ read
¿À¹ö¶óÀ̵å(override):
Ŭ·¡½º InputStream ³»ÀÇ read
ÆĶó¹ÌÅÍ:
buf - µ¥ÀÌÅÍÀÇ µ¶ÇØóÀÇ ¹öÆÛ
off - µ¥ÀÌÅÍÀÇ °³½Ã ¿ÀÇÁ¼Â(offset)
len - ÀÐÈ÷´Â ÃÖ´ë ¹ÙÀÌÆ®¼ö
¹Ýȯ°ª:
ÀÐÈ÷´Â ¹ÙÀÌÆ®ÀÇ ½ÇÁ¦ÀÇ ¼ö. ½ºÆ®¸²ÀÇ ¸¶Áö¸·¿¡ À̸£·¶À» °æ¿ì´Â -1
¿¹¿Ü:
IOException - ÀÔÃâ·Â ¿¡·¯°¡ ¹ß»ýÇßÀ» °æ¿ì
°ü·Ã Ç׸ñ:
DataInputStream.readFully(byte[], int, int)

available

public int available()
              throws IOException 
ºí·Ï ÇÏÁö ¾Ê°í ÀоîµéÀÏ ¼ö ÀÖ´Â ¹ÙÀÌÆ®¼ö¸¦ ¸®ÅÏÇÕ´Ï´Ù.

Á¤ÀÇ:
ÀÎÅÍÆäÀ̽º ObjectInput ³»ÀÇ available
¿À¹ö¶óÀ̵å(override):
Ŭ·¡½º InputStream ³»ÀÇ available
¹Ýȯ°ª:
Àб⠰¡´ÉÇÑ ¹ÙÀÌÆ®¼ö
¿¹¿Ü:
IOException - ±âº»ÀÌ µÇ´Â InputStream readÁß¿¡ ÀÔÃâ·Â ¿¡·¯°¡ ¹ß»ýÇßÀ» °æ¿ì

close

public void close()
           throws IOException 
ÀÔ·Â ½ºÆ®¸²À» ´Ý½À´Ï´Ù. ½ºÆ®¸²¿¡ °ü·ÃµÈ ¸ðµç ÀÚ¿øÀ» ÇعæÇϱâ À§Çؼ­ È£ÃâÇÒ ÇÊ¿ä°¡ ÀÖ½À´Ï´Ù.

Á¤ÀÇ:
ÀÎÅÍÆäÀ̽º Closeable ³»ÀÇ close
Á¤ÀÇ:
ÀÎÅÍÆäÀ̽º ObjectInput ³»ÀÇ close
¿À¹ö¶óÀ̵å(override):
Ŭ·¡½º InputStream ³»ÀÇ close
¿¹¿Ü:
IOException - ÀÔÃâ·Â ¿¡·¯°¡ ¹ß»ýÇßÀ» °æ¿ì

readBoolean

public boolean readBoolean()
                    throws IOException 
boolean¸¦ ÀоîµéÀÔ´Ï´Ù.

Á¤ÀÇ:
ÀÎÅÍÆäÀ̽º DataInput ³»ÀÇ readBoolean
¹Ýȯ°ª:
ÀÐÈ÷´Â boolean Ä¡
¿¹¿Ü:
EOFException - ÆÄÀÏÀÇ ¸¶Áö¸·¿¡ À̸£·¶À» °æ¿ì
IOException - ´Ù¸¥ ÀÔÃâ·Â ¿¡·¯°¡ ¹ß»ýÇßÀ» °æ¿ì

readByte

public byte readByte()
              throws IOException 
8 ºñÆ®ÀÇ ¹ÙÀÌÆ®¸¦ ÀоîµéÀÔ´Ï´Ù.

Á¤ÀÇ:
ÀÎÅÍÆäÀ̽º DataInput ³»ÀÇ readByte
¹Ýȯ°ª:
ÀÐÈ÷´Â 8 ºñÆ®ÀÇ ¹ÙÀÌÆ®°ª
¿¹¿Ü:
EOFException - ÆÄÀÏÀÇ ¸¶Áö¸·¿¡ À̸£·¶À» °æ¿ì
IOException - ´Ù¸¥ ÀÔÃâ·Â ¿¡·¯°¡ ¹ß»ýÇßÀ» °æ¿ì

readUnsignedByte

public int readUnsignedByte()
                     throws IOException 
ºÎÈ£ ¾øÀ½ 8 ºñÆ® ¹ÙÀÌÆ®¸¦ ÀоîµéÀÔ´Ï´Ù.

Á¤ÀÇ:
ÀÎÅÍÆäÀ̽º DataInput ³»ÀÇ readUnsignedByte
¹Ýȯ°ª:
ÀÐÈ÷´Â 8 ºñÆ®ÀÇ ¹ÙÀÌÆ®°ª
¿¹¿Ü:
EOFException - ÆÄÀÏÀÇ ¸¶Áö¸·¿¡ À̸£·¶À» °æ¿ì
IOException - ´Ù¸¥ ÀÔÃâ·Â ¿¡·¯°¡ ¹ß»ýÇßÀ» °æ¿ì

readChar

public char readChar()
              throws IOException 
16 ºñÆ®ÀÇ char¸¦ ÀоîµéÀÔ´Ï´Ù.

Á¤ÀÇ:
ÀÎÅÍÆäÀ̽º DataInput ³»ÀÇ readChar
¹Ýȯ°ª:
ÀÐÈ÷´Â 16 ºñÆ®ÀÇ char°ª
¿¹¿Ü:
EOFException - ÆÄÀÏÀÇ ¸¶Áö¸·¿¡ À̸£·¶À» °æ¿ì
IOException - ´Ù¸¥ ÀÔÃâ·Â ¿¡·¯°¡ ¹ß»ýÇßÀ» °æ¿ì

readShort

public short readShort()
                throws IOException 
16 ºñÆ®ÀÇ short¸¦ ÀоîµéÀÔ´Ï´Ù.

Á¤ÀÇ:
ÀÎÅÍÆäÀ̽º DataInput ³»ÀÇ readShort
¹Ýȯ°ª:
ÀÐÈ÷´Â 16 ºñÆ®ÀÇ short°ª
¿¹¿Ü:
EOFException - ÆÄÀÏÀÇ ¸¶Áö¸·¿¡ À̸£·¶À» °æ¿ì
IOException - ´Ù¸¥ ÀÔÃâ·Â ¿¡·¯°¡ ¹ß»ýÇßÀ» °æ¿ì

readUnsignedShort

public int readUnsignedShort()
                      throws IOException 
ºÎÈ£ ¾øÀ½ 16 ºñÆ®ÀÇ short¸¦ ÀоîµéÀÔ´Ï´Ù.

Á¤ÀÇ:
ÀÎÅÍÆäÀ̽º DataInput ³»ÀÇ readUnsignedShort
¹Ýȯ°ª:
ÀÐÈ÷´Â 16 ºñÆ®ÀÇ short°ª
¿¹¿Ü:
EOFException - ÆÄÀÏÀÇ ¸¶Áö¸·¿¡ À̸£·¶À» °æ¿ì
IOException - ´Ù¸¥ ÀÔÃâ·Â ¿¡·¯°¡ ¹ß»ýÇßÀ» °æ¿ì

readInt

public int readInt()
            throws IOException 
32 ºñÆ®ÀÇ int¸¦ ÀоîµéÀÔ´Ï´Ù.

Á¤ÀÇ:
ÀÎÅÍÆäÀ̽º DataInput ³»ÀÇ readInt
¹Ýȯ°ª:
ÀÐÈ÷´Â 32 ºñÆ®ÀÇ int°ª
¿¹¿Ü:
EOFException - ÆÄÀÏÀÇ ¸¶Áö¸·¿¡ À̸£·¶À» °æ¿ì
IOException - ´Ù¸¥ ÀÔÃâ·Â ¿¡·¯°¡ ¹ß»ýÇßÀ» °æ¿ì

readLong

public long readLong()
              throws IOException 
64 ºñÆ®ÀÇ long¸¦ ÀоîµéÀÔ´Ï´Ù.

Á¤ÀÇ:
ÀÎÅÍÆäÀ̽º DataInput ³»ÀÇ readLong
¹Ýȯ°ª:
ÀÐÈ÷´Â 64 ºñÆ®ÀÇ long°ª
¿¹¿Ü:
EOFException - ÆÄÀÏÀÇ ¸¶Áö¸·¿¡ À̸£·¶À» °æ¿ì
IOException - ´Ù¸¥ ÀÔÃâ·Â ¿¡·¯°¡ ¹ß»ýÇßÀ» °æ¿ì

readFloat

public float readFloat()
                throws IOException 
32 ºñÆ®ÀÇ float¸¦ ÀоîµéÀÔ´Ï´Ù.

Á¤ÀÇ:
ÀÎÅÍÆäÀ̽º DataInput ³»ÀÇ readFloat
¹Ýȯ°ª:
ÀÐÈ÷´Â 32 ºñÆ®ÀÇ float°ª
¿¹¿Ü:
EOFException - ÆÄÀÏÀÇ ¸¶Áö¸·¿¡ À̸£·¶À» °æ¿ì
IOException - ´Ù¸¥ ÀÔÃâ·Â ¿¡·¯°¡ ¹ß»ýÇßÀ» °æ¿ì

readDouble

public double readDouble()
                  throws IOException 
64 ºñÆ®ÀÇ double¸¦ ÀоîµéÀÔ´Ï´Ù.

Á¤ÀÇ:
ÀÎÅÍÆäÀ̽º DataInput ³»ÀÇ readDouble
¹Ýȯ°ª:
ÀÐÈ÷´Â 64 ºñÆ®ÀÇ double°ª
¿¹¿Ü:
EOFException - ÆÄÀÏÀÇ ¸¶Áö¸·¿¡ À̸£·¶À» °æ¿ì
IOException - ´Ù¸¥ ÀÔÃâ·Â ¿¡·¯°¡ ¹ß»ýÇßÀ» °æ¿ì

readFully

public void readFully(byte[] buf)
               throws IOException 
¹ÙÀÌÆ®¸¦ ÀоîµéÀÔ´Ï´Ù. ¸ðµç ¹ÙÀÌÆ®°¡ ÀÐÈú ¶§±îÁö ºí·Ï ÇÕ´Ï´Ù.

Á¤ÀÇ:
ÀÎÅÍÆäÀ̽º DataInput ³»ÀÇ readFully
ÆĶó¹ÌÅÍ:
buf - µ¥ÀÌÅÍÀÇ µ¶ÇØóÀÇ ¹öÆÛ
¿¹¿Ü:
EOFException - ÆÄÀÏÀÇ ¸¶Áö¸·¿¡ À̸£·¶À» °æ¿ì
IOException - ´Ù¸¥ ÀÔÃâ·Â ¿¡·¯°¡ ¹ß»ýÇßÀ» °æ¿ì

readFully

public void readFully(byte[] buf,
                      int off,
                      int len)
               throws IOException 
¹ÙÀÌÆ®¸¦ ÀоîµéÀÔ´Ï´Ù. ¸ðµç ¹ÙÀÌÆ®°¡ ÀÐÈú ¶§±îÁö ºí·Ï ÇÕ´Ï´Ù.

Á¤ÀÇ:
ÀÎÅÍÆäÀ̽º DataInput ³»ÀÇ readFully
ÆĶó¹ÌÅÍ:
buf - µ¥ÀÌÅÍÀÇ µ¶ÇØóÀÇ ¹öÆÛ
off - µ¥ÀÌÅÍÀÇ °³½Ã ¿ÀÇÁ¼Â(offset)
len - ÀоîµéÀÌ´Â ÃÖ´ë ¹ÙÀÌÆ®¼ö
¿¹¿Ü:
EOFException - ÆÄÀÏÀÇ ¸¶Áö¸·¿¡ À̸£·¶À» °æ¿ì
IOException - ´Ù¸¥ ÀÔÃâ·Â ¿¡·¯°¡ ¹ß»ýÇßÀ» °æ¿ì

skipBytes

public int skipBytes(int len)
              throws IOException 
¹ÙÀÌÆ®¸¦ ½ºÅµ ÇÕ´Ï´Ù. ¸ðµç ¹ÙÀÌÆ®°¡ ½ºÅµ µÉ ¶§±îÁö ºí·Ï ÇÕ´Ï´Ù.

Á¤ÀÇ:
ÀÎÅÍÆäÀ̽º DataInput ³»ÀÇ skipBytes
ÆĶó¹ÌÅÍ:
len - ½ºÅµ ÇÏ´Â ¹ÙÀÌÆ®¼ö
¹Ýȯ°ª:
½ÇÁ¦·Î ½ºÅµ µÈ ¹ÙÀÌÆ®¼ö
¿¹¿Ü:
EOFException - ÆÄÀÏÀÇ ¸¶Áö¸·¿¡ À̸£·¶À» °æ¿ì
IOException - ´Ù¸¥ ÀÔÃâ·Â ¿¡·¯°¡ ¹ß»ýÇßÀ» °æ¿ì

readLine

@Deprecated 
public String  readLine()
                throws IOException 
ÃßõÇÏÁö ¾Ê½À´Ï´Ù.  ÀÌ ¸Þ¼­µå´Â ¹ÙÀÌÆ®¸¦ Á¤È®ÇÏ°Ô ¹®ÀÚ·Î º¯È¯ÇÏÁö ¾Ê½À´Ï´Ù. »ó¼¼ ¹× ´ëü ¸Þ¼­µå¿¡ ´ëÇؼ­´Â DataInputStream¸¦ ÂüÁ¶ÇϽʽÿÀ.

\n, \r, \r\n, ¶Ç´Â EOF ·Î Á¾·áÇÏ´Â ÇàÀ» ÀоîµéÀÔ´Ï´Ù.

Á¤ÀÇ:
ÀÎÅÍÆäÀ̽º DataInput ³»ÀÇ readLine
¹Ýȯ°ª:
ÇàÀÇ Ä³¸¯ÅÍ ¶óÀÎÀÇ Ä«ÇÇ
¿¹¿Ü:
IOException - ±âº»ÀÌ µÇ´Â InputStream readÁß¿¡ ÀÔÃâ·Â ¿¡·¯°¡ ¹ß»ýÇßÀ» °æ¿ì

readUTF

public String  readUTF()
               throws IOException 
¼öÁ¤ UTF-8 Çü½ÄÀÇ Ä³¸¯ÅÍ ¶óÀÎÀ» ÀоîµéÀÔ´Ï´Ù.

Á¤ÀÇ:
ÀÎÅÍÆäÀ̽º DataInput ³»ÀÇ readUTF
¹Ýȯ°ª:
ij¸¯ÅÍ ¶óÀÎ
¿¹¿Ü:
IOException - ±âº»ÀÌ µÇ´Â InputStream readÁß¿¡ ÀÔÃâ·Â ¿¡·¯°¡ ¹ß»ýÇßÀ» °æ¿ì
UTFDataFormatException - ij¸¯ÅÍ ¶óÀÎÁßÀÇ read ¹ÙÀÌÆ®°¡ À¯È¿ÇÑ ¼öÁ¤ UTF-8 Çü½Ä¿¡¼­ encode µÈ ij¸¯ÅÍ ¶óÀÎ ÀÌ¿Ü¿¡¼­ ¸¸³µÀ» °æ¿ì

JavaTM 2 Platform
Standard Ed. 5.0

Copyright 2004 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms . Documentation Redistribution Policy µµ ÂüÁ¶ÇϽʽÿÀ.