JAVA×Ö·û´®´¦Àíº¯ÊýÁбíÒ»ÀÀ
JavaÖеÄ×Ö·û´®Ò²ÊÇÒ»Á¬´®µÄ×Ö·û¡£µ«ÊÇÓëÐí¶àÆäËûµÄ¼ÆËã»úÓïÑÔ½«×Ö·û´®×÷Ϊ×Ö·ûÊý×é´¦Àí²»Í¬£¬Java½«×Ö·û´®×÷ΪStringÀàÐͶÔÏóÀ´´¦Àí¡£½«×Ö·û´®×÷ΪÄÚÖõĶÔÏó´¦ÀíÔÊÐíJavaÌṩʮ·Ö·á¸»µÄ¹¦ÄÜÌØÐÔÒÔ·½±ã´¦Àí×Ö·û´®¡£ÏÂÃæÊÇһЩʹÓÃÆµÂʱȽϸߵĺ¯Êý¼°ÆäÏà¹ØËµÃ÷¡£
substring()
ËüÓÐÁ½ÖÖÐÎʽ£¬µÚÒ»ÖÖÊÇ£ºString substring(int startIndex)
µÚ¶þÖÖÊÇ£ºString substring(int startIndex,int endIndex)
concat() Á¬½ÓÁ½¸ö×Ö·û´®
replace() Ìæ»»
ËüÓÐÁ½ÖÖÐÎʽ£¬µÚÒ»ÖÖÐÎʽÓÃÒ»¸ö×Ö·ûÔÚµ÷ÓÃ×Ö·û´®ÖÐËùÓгöÏÖij¸ö×Ö·ûµÄµØ·½½øÐÐÌæ»»£¬ÐÎʽÈçÏ£º
String replace(char original,char replacement)
ÀýÈ磺String s=”Hello”.replace(’l',’w');
µÚ¶þÖÖÐÎʽÊÇÓÃÒ»¸ö×Ö·ûÐòÁÐÌæ»»ÁíÒ»¸ö×Ö·ûÐòÁУ¬ÐÎʽÈçÏ£º
String replace(CharSequence original,CharSequence replacement)
trim() È¥µôÆðʼºÍ½áβµÄ¿Õ¸ñ
valueOf() ת»»Îª×Ö·û´®
toLowerCase() ת»»ÎªÐ¡Ð´
toUpperCase() ת»»Îª´óд
length() È¡µÃ×Ö·û´®µÄ³¤¶È
Àý£º
char chars[]={’a',’b’.’c'};
String s=new String(chars);
int len=s.length();
charAt() ½ØÈ¡Ò»¸ö×Ö·û
Àý£º
char ch;
ch=”abc”.charAt(1);
·µ»ØÖµÎª’b’
getChars() ½ØÈ¡¶à¸ö×Ö·û
void getChars(int sourceStart,int sourceEnd,char target[],int targetStart)
sourceStart Ö¸¶¨ÁË×Ó´®¿ªÊ¼×Ö·ûµÄϱê
sourceEnd Ö¸¶¨ÁË×Ó´®½áÊøºóµÄÏÂÒ»¸ö×Ö·ûµÄϱꡣÒò´Ë£¬×Ó´®°üº¬´ÓsourceStartµ½sourceEnd-1µÄ×Ö·û¡£
target Ö¸¶¨½ÓÊÕ×Ö·ûµÄÊý×é
targetStart targetÖпªÊ¼¸´ÖÆ×Ó´®µÄϱêÖµ
Àý£º
String s=”this is a demo of the getChars method.”;
char buf[]=new char[20];
s.getChars(10,14,buf,0);
getBytes()
Ìæ´úgetChars()µÄÒ»ÖÖ·½·¨Êǽ«×Ö·û´æ´¢ÔÚ×Ö½ÚÊý×éÖУ¬¸Ã·½·¨¼´getBytes()
Àý£º
String s = “Hello!ÄãºÃ£¡”;
byte[] bytes = s.getBytes();
toCharArray()
Àý£º
String s = “Hello!ÄãºÃ£¡”;
char[] ss = s.toCharArray();
equals()ºÍequalsIgnoreCase() ±È½ÏÁ½¸ö×Ö·û´®
regionMatches() ÓÃÓڱȽÏÒ»¸ö×Ö·û´®ÖÐÌØ¶¨ÇøÓòÓëÁíÒ»ÌØ¶¨ÇøÓò£¬ËüÓÐÒ»¸öÖØÔØµÄÐÎʽÔÊÐíÔڱȽÏÖкöÂÔ´óСд¡£
boolean regionMatches(int startIndex,String str2,int
str2StartIndex,int numChars)
boolean
Ïà¹ØÎĵµ£º
ÕâÆªÎÄÕ²¢Ã»Óиø³öÈçºÎʹÓÃResultSetµÄ¾ßÌåÀý×Ó£¬Ö»ÊÇ´ÓResultSetµÄ¹¦ÄÜÐÔÉϽøÐÐÁËÏêϸµÄ½²Êö¡£Ï£ÍûÕâÆªÎÄÕ¶Դó¼ÒÀí½âResultSetÄܹ»ÓÐËù°ïÖú¡£ÏÂÃæ¾ÍÊÇÕâÆªÎÄÕµľßÌåÄÚÈÝ¡£
½á¹û¼¯(ResultSet)ÊÇÊý¾ÝÖвéѯ½á¹û·µ»ØµÄÒ»ÖÖ¶ÔÏ󣬿ÉÒÔ˵½á¹û¼¯ÊÇÒ»¸ö´æ´¢²éѯ½á¹ûµÄ¶ÔÏ󣬵«Êǽá¹û¼¯²¢²»½ö½ö¾ßÓд洢µÄ¹¦ÄÜ£¬Ëûͬʱ»¹¾ßÓв ......
/**
* ÃèÊö£ºÊý¾Ý¿â³õʼ»¯»ù±¾Àà
*
* @×÷Õß ÍõȺ
* @´´½¨ÈÕÆÚ 2010-04-08
* @ÐÞ¸ÄÈË xxx
* @ÐÞ¸ÄÈÕÆÚ xxx
* @¼ì²éÈË xxx
* @¼ì²éÈÕÆÚ xxx
*/
import java.sql.SQLException;
import com.ibatis.sqlmap.client.SqlMapClient;
import com.oumasoft.bstmanage.ibatis.SqlMapConfig;
import com.oumasof ......
ÖØÔØ£º·½·¨ÃûÏàͬ ·µ»ØÀàÐͺͲÎÊýÖÁÉÙÓÐÒ»Ïͬ£¨²ÎÊý°üÀ¨ÀàÐÍ ºÍ ÊýÁ¿£©
ÖØÐ´£º·¢ÉúÔÚ×ÓÀà ·½·¨Ãû ·µ»ØÀàÐÍ ²ÎÊý¶¼Ïàͬ Ö»ÊǰѸ¸ÀàµÄ´Ë·½·¨ÖØÐÂд¶øÒÑ
Ò»Ö±ÒÔÀ´ÎÒ¶ÔFacther f = new Son()ÕâÑùµÄÒýÓñäÁ¿ÒýÓÃ×ÓÀàµÄʵÀý¶¼²»ÊǺܶ®¡£
»¹ÓоÍÊÇÏòÉÏÏòÏÂתÐÍ
È磺Animal animal = new Dog() // ÒýÓñäÁ¿ÒýÓÃÁËÀ´×Ô×ÓÀàµÄÊ ......
´«ÖDz¥¿ÍJAVAÅàѵstruts2ѧϰ±Ê¼ÇÒ»
Àë±ÏÒµÓÖ×ß½üÁËÒ»²½£¬ÐÄÀïÓÖĪÃûµÄ½ôÕÅÆðÀ´¡£½ñÌìÓÐÒ»¸öͬÐĹ«Ë¾·Å¼ÙÐÇÆÚѧУÀ´ÉϿΣ¬ÎÒ¶ÔÆä³ýÁËÅå·þÖ®Í⣬¾ÍÖ»ÓÐÏÛĽÁË£¬¹¤×Ê6.5£Ë¿É²»ÊÇÎÒÏÖÔÚµÄˮƽ
¸ÒÏëµÄºÇ£¬ËäÈ»ÎÒ¶Ô£³£Ç²»ÊǺܸÐÐËȤ£¬ÎÒÒ²¸üÏàÐŽÅ̤ʵµÄÈ¥×ߺÃÿһ²½À´µÃ̤ʵ£¡µ«ÊÇÕ⼸¸öͬѧËùÈ¡µÃ³É¼¨È ......
¸´Ï°Ò»ÏÂjava´úÂ룬´úÂëÎÊÌâºÜ¶àÇë¸ßÊÖ²»Áߴͽ̡£°ïÖúÖØ¹¹¡£
public static void main(String[] args){
int employeeCount = 420000; //Ô±¹¤×ÜÊý
Employee[] ËùÓÐÖ°¹¤ = getAllEmployee();
for((i=0;i<=employeeCount ;i++) {
&n ......