Ò׽ؽØͼÈí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

java IOÏê½â Java»ù´¡ ºÜÖØÒª

java IOÏê½â
Java Á÷ÔÚ´¦ÀíÉÏ·ÖΪ×Ö·ûÁ÷ºÍ×Ö½ÚÁ÷¡£×Ö·ûÁ÷´¦ÀíµÄµ¥ÔªÎª 2 ¸ö×Ö½ÚµÄ Unicode ×Ö·û£¬·Ö±ð²Ù×÷×Ö·û¡¢×Ö·ûÊý×é»ò×Ö·û´®£¬¶ø×Ö½ÚÁ÷´¦Àíµ¥ÔªÎª 1 ¸ö×Ö½Ú£¬²Ù×÷×Ö½ÚºÍ×Ö½ÚÊý×é¡£
Java ÄÚÓà Unicode ±àÂë´æ´¢×Ö·û£¬×Ö·ûÁ÷´¦ÀíÀฺÔð½«ÍⲿµÄÆäËû±àÂëµÄ×Ö·ûÁ÷ºÍ java ÄÚ Unicode ×Ö·ûÁ÷Ö®¼äµÄת»»¡£¶øÀà InputStreamReader ºÍ OutputStreamWriter ´¦Àí×Ö·ûÁ÷ºÍ×Ö½ÚÁ÷µÄת»»¡£×Ö·ûÁ÷£¨Ò»´Î¿ÉÒÔ´¦ÀíÒ»¸ö»º³åÇø£©Ò»´Î²Ù×÷±È×Ö½ÚÁ÷£¨Ò»´ÎÒ»¸ö×Ö½Ú£©Ð§Âʸߡ£ 
 
( Ò» )ÒÔ×Ö½ÚΪµ¼ÏòµÄ stream------InputStream/OutputStream
InputStream ºÍ OutputStream ÊÇÁ½¸ö abstact À࣬¶ÔÓÚ×Ö½ÚΪµ¼ÏòµÄ stream ¶¼À©Õ¹ÕâÁ½¸ö¼¦Àߣ¨»ùÀà ^_^ £© ;
1¡¢ InputStream
 
 
1.1
ByteArrayInputStream -- °ÑÄÚ´æÖеÄÒ»¸ö»º³åÇø×÷Ϊ InputStream ʹÓà .
construct---
(A)ByteArrayInputStream(byte[]) ´´½¨Ò»¸öÐÂ×Ö½ÚÊý×éÊäÈëÁ÷£¨ ByteArrayInputStream £©£¬Ëü´ÓÖ¸¶¨×Ö½ÚÊý×éÖжÁÈ¡Êý¾Ý£¨ ʹÓà byte ×÷ΪÆ仺³åÇøÊý×飩
(B)---ByteArrayInputStream(byte[], int, int) ´´½¨Ò»¸öÐÂ×Ö½ÚÊý×éÊäÈëÁ÷£¬Ëü´ÓÖ¸¶¨×Ö½ÚÊý×éÖжÁÈ¡Êý¾Ý¡£
---mark:: ¸Ã×Ö½ÚÊý×éδ±»¸´ÖÆ¡£
1.2
StringBufferInputStream -- °ÑÒ»¸ö String ¶ÔÏó×÷Ϊ InputStream .
construct---  
StringBufferInputStream(String) ¾ÝÖ¸¶¨´®´´½¨Ò»¸ö¶ÁÈ¡Êý¾ÝµÄÊäÈëÁ÷´®¡£
 
×¢ÊÍ£º²»ÍƼöʹÓà StringBufferInputStream ·½·¨¡£ ´ËÀ಻Äܽ«×Ö·ûÕýÈ·µÄת»»Îª×Ö½Ú¡£
ͬ JDK 1.1 °æÖеÄÀàËÆ£¬´ÓÒ»¸ö´®´´½¨Ò»¸öÁ÷µÄ×î¼Ñ·½·¨ÊDzÉÓà StringReader Àà¡£
1.3
FileInputStream -- °ÑÒ»¸öÎļþ×÷Ϊ InputStream £¬ÊµÏÖ¶ÔÎļþµÄ¶ÁÈ¡²Ù×÷
construct---
(A)FileInputStream(File name) ´´½¨Ò»¸öÊäÈëÎļþÁ÷£¬´ÓÖ¸¶¨µÄ File ¶ÔÏó¶ÁÈ¡Êý¾Ý¡£
(B)FileInputStream(FileDescriptor) ´´½¨Ò»¸öÊäÈëÎļþÁ÷£¬´ÓÖ¸¶¨µÄÎļþÃèÊöÆ÷¶ÁÈ¡Êý¾Ý¡£
(C)-FileInputStream(String  name) ´´½¨Ò»¸öÊäÈëÎļþÁ÷£¬´ÓÖ¸¶¨Ãû³ÆµÄÎļþ¶ÁÈ¡Êý¾Ý¡£
method ---- read() ´Óµ±Ç°ÊäÈëÁ÷ÖжÁÈ¡Ò»×Ö½ÚÊý¾Ý¡£
read(byte[]) ½«µ±Ç°ÊäÈëÁ÷ÖÐ b.length ¸ö×Ö½ÚÊý¾Ý¶Áµ½Ò»¸ö×Ö½ÚÊý×éÖС£
read(byte[], int, int) ½«ÊäÈëÁ÷ÖÐ len ¸ö×Ö½ÚÊý¾Ý¶ÁÈëÒ»¸ö×Ö½ÚÊý×éÖС£
1.4
PipedInputStream £ºÊµÏÖÁË pipe µÄ¸ÅÄÖ÷ÒªÔÚÏß³ÌÖÐʹÓà . ¹ÜµÀÊäÈëÁ÷ÊÇÖ¸Ò»¸öͨѶ¹ÜµÀµÄ½ÓÊնˡ£
Ò»¸öÏß


Ïà¹ØÎĵµ£º

ÍƼö¼¸±¾javaѧϰµÄ¡°´ó±¦¡±£¨²»¶Ï¸üУ©


java se£º
1.javaºËÐļ¼Êõ£¨µÚÆ߰棩£¨ºÜºÃµÄÈëÃÅÊé¼®£¬ÓÐÁ½±¾£©
2.java±à³Ì˼Ï루µÚËİ棩£¨ÎÒ¿´¹ýµÚÈý°æ£¬µÚËÄ°æ¿´ÁËÒ»µãÓ¢Îĵģ¬¾õµÃÕâ±¾Ê黹ÊÇÊʺÏÓлù´¡µÄjavaѧϰÕß¹®¹Ì»ù´¡£¬Ò²¾ÍÊÇ˵ҪÏë´òÀλù´¡¾Í¿´ÍêºËÐļ¼Êõ¿´Õâ¸ö~£©
3.java jdkʵÀý±¦µä£¨Õâ±¾ÊéÀX±¾°üº¬ÁËËùÓÐÓï·¨µÄÀý³Ì£©
4.java se6.0±à³ÌÖ¸ÄÏ£¨ºñʵ ......

[ת]java³éÏóÀàºÍ½Ó¿ÚµÄÇø±ð Ïêϸ½â˵

¹Ø¼ü×Ö: java³éÏóÀàºÍ½Ó¿ÚµÄÇø±ð---Ïêϸ½â˵
abstract classºÍinterfaceÊÇJavaÓïÑÔÖжÔÓÚ³éÏóÀඨÒå½øÐÐÖ§³ÖµÄÁ½ÖÖ»úÖÆ£¬ÕýÊÇÓÉÓÚÕâÁ½ÖÖ»úÖƵĴæÔÚ£¬²Å¸³ÓèÁËJavaÇ¿´óµÄÃæÏò¶ÔÏóÄÜÁ¦¡£abstract classºÍinterfaceÖ®¼äÔÚ¶ÔÓÚ³éÏóÀඨÒåµÄÖ§³Ö·½Ãæ¾ßÓкܴóµÄÏàËÆÐÔ£¬ÉõÖÁ¿ÉÒÔÏ໥Ìæ»»£¬Òò´ËºÜ¶à¿ª·¢ÕßÔÚ½øÐгéÏóÀඨÒåʱ¶ÔÓÚ ......

java»ù´¡

1¡¢×÷ÓÃÓòpublic,private,protected,ÒÔ¼°²»Ð´Ê±µÄÇø±ð
×÷ÓÃÓò µ±Ç°Àà ͬһpackage ×ÓËïÀà ÆäËûpackage
public √ √ √ √
protected √ √ √ ×
²»Ð´Ê±Ä¬ÈÏΪfriendly √ √ × ×
private √ × × ×
2¡¢ArrayListºÍVect ......

Java serialization½éÉܼ°¼òµ¥Ó¦ÓÃ

Object serializationµÄ¶¨Ò壺
Object serialization ÔÊÐíÄ㽫ʵÏÖÁËSerializable½Ó¿ÚµÄ¶ÔÏóת»»Îª×Ö½ÚÐòÁУ¬ÕâЩ×Ö½ÚÐòÁпÉÒÔ±»ÍêÈ«´æ´¢ÒÔ±¸ÒÔºóÖØÐÂÉú³ÉÔ­À´µÄ¶ÔÏó¡£
serialization²»µ«¿ÉÒÔÔÚ±¾»ú×ö£¬¶øÇÒ¿ÉÒÔ¾­ÓÉÍøÂç²Ù×÷£¨RMI£©¡£Õâ¸öºÃ´¦ÊǺܴóµÄ----ÒòΪËü×Ô¶¯ÆÁ±ÎÁ˲Ù×÷ϵͳµÄ²îÒ죬×Ö½Ú˳Ðò£¨ÓÃUnixϵÄc¿ª·¢¹ýÍ ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØͼ | ¸ÓICP±¸09004571ºÅ