Java¿ª·¢ Ö® StringBufferºÍStringBuilder(1)
ת £º http://www.jcourse.cn/read/234
2009-03-02 ×÷Õß:
zhangtaolv
ÔÚÎÒÃÇÈÕ³£¿ª·¢ÖУ¬¾³£»áÓöµ½¶ÔÎı¾µÄ²Ù×÷£¬²¢ÇÒÔÚÒ»°ãµÄMISϵͳÖУ¬Îı¾²Ù×÷ÓÈΪ¶à£¬ÈçÓû§Ãû¡¢ÎÄÕÂÄÚÈÝ¡¢ÎÄÕ±êÌâ¡¢ºÏͬÄÚÈݵȡ£ÔÚ֮ǰµÄ½Ì³ÌÖУ¬ÎÒÒ²¸ø´ó¼Ò½²½âÁËJavaÖÐ×î»ù±¾µÄ×Ö·û´®²Ù×÷µÄÀ࣬String¡£ÔÚ֮ǰµÄ½Ì³ÌÖÐÎÒÒ²¸ø´ó¼Ò½²ÁËStringÊDz»¿É±äµÄÀ࣬¼´ÔÚ¹¹ÔìºóÆäÄÚÈݲ»Äܱ仯£¬Òò´Ë¶ÔÓÚÄÚÈÝÆµ·±±ä¶¯£¨ÈçÎÒÃǶÔÎÄÕ½øÐб༣©À´ËµStringÊDz»ºÏÊʵġ£ÄÇôÓöµ½ÕâÑùµÄÇé¿öʱ£¬ÎÒÃǸÃÈçºÎ´¦ÀíÄØ£¿JavaΪÎÒÃÇÌṩÁËStringBuilderºÍStringBuffer¡£
Ê×ÏȽ²½²ËüÃǵĹ²Í¬µã°É£¡»ù±¾ÉÏÎÒÃÇÔÚ×Ö·û´®¾³£·¢Éú¸Ä±äµÄʱºòʹÓÃËüÃÇ£¬È»ºóʹÓÃËüÃÇÀ´²Ù×÷»á±ÈʹÓÃStringÀàÒª¿ìЩ¡£ÕâÁ½¸öÀàµÄÇø±ðÊÇStringBufferÊÇḬ̈߳²È«µÄ¶øStringBuilderÊÇ·ÇḬ̈߳²È«µÄ¡£
ÔÚ´óÖ½²½âºó£¬ÎÒÃÇ¿´¿´ÈçºÎÓÉÒÑÓеÄ×Ö·û´®¶ÔÏóÀ´´´½¨StringBufferºÍ½«StringBufferת»»ÎªString¶ÔÏó¡£
Ïȸø³öStringBufferÀàµÄ¹¹Ôì·½·¨µÄAPI£¬ÈÃÎÒÃÇ¿´¿´ÓжàÉÙÖÖ·½Ê½À´¹¹ÔìËü¡£
¹¹Ôì·½·¨ÕªÒª
StringBuffer()
¹¹ÔìÒ»¸öÆäÖв»´ø×Ö·ûµÄ×Ö·û´®»º³åÇø£¬Æä³õʼÈÝÁ¿Îª 16 ¸ö×Ö·û¡£
StringBuffer(CharSequence seq)
public java.lang.StringBuilder(CharSequence seq) ¹¹ÔìÒ»¸ö×Ö·û´®»º³åÇø£¬Ëü°üº¬ÓëÖ¸¶¨µÄ CharSequenceÏàͬµÄ×Ö·û¡£
StringBuffer(int capacity)
¹¹ÔìÒ»¸ö²»´ø×Ö·û£¬µ«¾ßÓÐÖ¸¶¨³õʼÈÝÁ¿µÄ×Ö·û´®»º³åÇø¡£
StringBuffer(String str)
¹¹ÔìÒ»¸ö×Ö·û´®»º³åÇø£¬²¢½«ÆäÄÚÈݳõʼ»¯ÎªÖ¸¶¨µÄ×Ö·û´®ÄÚÈÝ¡£
¿ÉÒÔ¿´³ö£¬ÎÒÃÇ¿ÉÒÔÖ±½ÓnewÒ»¸ö£¬Ò²¿ÉÒÔÔÚnewµÄʱºò¸ø³ö²ÎÊý¡£ÕâÀïµÄ²ÎÊý¿ÉÒÔÊÇÒ»¸ö×Ö·û´®£¬¿ÉÒÔÊÇÒ»¸öÈÝÁ¿Öµ£¬Ò²¿ÉÒÔÊÇÒ»¸öCharSequence¡£ÎÒÃÇÊ×ÏÈ¿´¿´ÓÃÒÑÓеÄ×Ö·û´®À´¹¹ÔìStringBuffer¡£ÏÂÃæÊÇÒ»¸öÀý×Ó£º
Java´úÂë
public class MainClass {
public static void main(String[] arg) {
StringBuffer aString = new StringBuffer("ABC
Ïà¹ØÎĵµ£º
´ó¼ÒºÃ£¬ÕâÀïÓÐIBMµÄÈý¸ö³¤ÆÚÐèÇ󣺾ùÊÇÐèÒª2ÄêÒÔÉÏÏà¹Ø¹¤×÷¾Ñ飬ÆäÖÐJavaÒÔ¼°TestingÐèÒªÓ¢Óï¿ÉÒÔ½»Á÷£¬C/Unix²»ÐèÒªÓïÑÔ¡£
Java ´óÁ¬
ÃèÊö£ºJava programming, knowledge in J2SE, SWT/JFace, XML. Eclipse programming, knowledge in eclipse architecture. Clear understanding of plugin development. Hands-on exp ......
ÕâÁ½ÌìѧУ¿ªÊ¼ÈÃÎÒÃÇÕâÒ»´óÅú¸ß·ÑÉúÑ¡Ôñ×Ô¼ºµÄרҵ·½Ïò£¬Focuser
ÎÒ
¾¹ýºÃ¼¸¸öÄêÍ·µÄ˼¿¼£¬²¢ÇÒÔÚÎÒÃÇÇ×°®c#ÀÏʦÈÈÇéµÄÏò
ÎÒÃǽéÉÜ.netµÄǰ¾°ºó£¬ÒãÈ»¼á¶¨µÄÑ¡ÔñÁËjavaÕâÌõ×Ô¼ºÈÏΪǰ³ÌËÆ½õµÄµÀ·¡£ÒÔϵÄÕâÐ©ÍøÕ¾ÊÇÎÒÆ½Ê±¾³£·ÃÎʵÄһЩ¹úÍâµÄÓ¢ÎÄjavaÍøÕ¾£¬½ñÌìÌØ
µØµÄ·¢²¼¸ø´ó¼Ò£¬Ï£ÍûÎÒÃÇÄܹ»ÕæÕýµÄѧϰµ½jav ......
c# java Çø±ð
C#ÓëJAVAµÄÏà֮ͬ´¦:ÓÉÓÚC#ÓëJAVA¶¼ÊÇ»ùÓÚC++·¢Õ¹ÆðÀ´µÄ,Òò´Ë¶þÕßÖ®¼ä¾ßÓкܶàÏàËÆÖ®´¦,¾ßÌåÈçÏÂ:
1¡¢C#ºÍJAVAÓïÑԵıàÒë½á¹ûÊǶÀÁ¢ÓÚ¼ÆËã»úºÍ±à³ÌÓïÑԵģ¬¿ÉÖ´ÐÐÎļþ¿ÉÒÔÔÚÊܹÜÀíµÄÖ´ÐÐ
»·¾³ÖÐÖ´ÐУ»
2¡¢C#ºÍJAVAÓïÑÔ¶¼ÊDzÉÓÃÁË×Ô¶¯µÄÀ¬»ø»ØÊÕ»úÖÆ£»
3¡¢C#ºÍJAVAÓïÑÔ¶¼È¡ÏûÁËÖ¸Õë²Ù×÷£»
4¡¢C ......
ÎÄÕÂת×Ô£ºhttp://javastudy.blog.51cto.com/183528/78723
jsp¿ª·¢ÖÐµÄ ¼àÌýÆ÷ºÍ¹ýÂËÆ÷£¬ÕâÁ½¸ö¶«Î÷Ҫ˵ÆðÀ´£¬ºÜ´ó£¬ºÜ·±¡£½ñÌìÎÒÏëÓÃÒ»¸öÏÖʵµÄÀý×Ó£¬À´ËµÃ÷ÕâÁ½¸ö¶«¶«µÄ×÷Óá£
°¸ÀýÃèÊö
¼ÙÉèÄãÆ½Ê±Éú»îÔÚ±±¾©£¬ÓÐÌìÄãÈ¥Ò»¸öºÜ±ßÔ¶ºÜƶÇîµÄɽ´åÌåÑéÉú»î£¬µ½ÁËÄǸ ......
JAVAÖÐÓÃÓÚ´¦Àí×Ö·û´®µÄ“ÈýÐֵܔ
JAVAÖÐÓÃÓÚ´¦Àí×Ö·û´®³£ÓõÄÓÐÈý¸öÀࣺjava.lang.String¡¢java.lang.StringBuffer¡¢java.lang.StringBuilder£¬ÕâÈýÕߵĹ²Í¬Ö®´¦¶¼ÊÇfinalÀ࣬²»ÔÊÐí±»¼Ì³Ð£¬ÕâÖ÷ÒªÊÇ´ÓÐÔÄܺͰ²È«ÐÔÉÏ¿¼Âǵģ¬ÒòΪÕ⼸¸öÀà¶¼ÊǾ³£±»Ê¹ÓÃ×ŵģ¬ÇÒ¿¼Âǵ½·ÀÖ¹ÆäÖеIJÎÊý±»ÐÞ¸ÄÓ°Ïìµ½ÆäËüµÄÓ¦Óᣠ......