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java date

//¼òµ¥µÄjavaÈÕÆÚ¸ñʽ¿ØÖÆ
 java.Text.SimpleDateFormat format = new java.Text.SimpleDateFormat("yyyy-MM-dd hh:mm:ss");//ÄãÏëÒªµÄ¸ñʽ
//×¢ÒâÔµÄλÖÃÒª´óдµÄMM  Òª²»¾Í¿´µ½µÄ²»ÊÇÕýÈ·ÏÔʾ£¬¿ÉÒÔ°ÑÄãÏëҪת»»µÄÈÕÆÚת»»ÎªÏàÓ¦µÄ¸ñʽ°¡
format.format(new java.util.Date());//dateΪÈÕÆÚÐÍÊý¾Ý£¬¿ÉÒÔÈÎÒâʱ¼ä


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jakarta regexp (java strutsÕýÔò±í´ïʽ)


  Character Classes
      [abc]                  Simple character class
      [a-zA-Z]            ......

java exception javaÒì³£»ã×Ü(3)

java exception ½â¾ö·½°¸ - ÎÒµÄÒì³£Íø|Òì³£|exception   791 - java.lang.NoSuchMethodError 792 - RuntimeException 793 - org.hibernate.exception.SQLGrammarException 794 - Internal Error 795 - ×Ô¶¨ÒåÒì³£ 796 - org.dom4j.DocumentException 797 - java.net.SocketException 798 - Exception¶ÔÏó 799 - SQLE ......

Java Application Ö±½Óͨ¹ýjndiÁ¬½ÓÊý¾Ý¿â

 Ê¹ÓÃjar°ü:
 commons-pool-1.5.3.jar,tomcat-naming-common.jar,commons-pool-1.5.3-bin.zip,commons-dbcp.jar
 ×¢Òâ:jdbc Çý¶¯ÒªÓëÊý¾Ý¿â¼æÈÝ.
 package test.comm;
import java.sql.Connection;
import java.sql.SQLException;
import java.util.Hashtable;
import javax.naming.InitialCont ......

java È«ÅÅÁÐËã·¨

 import java.util.Arrays;
/**
 * ÇóÒ»¸öÊý×éµÄÈ«ÅÅÁÐËã·¨
 * @author Administrator
 */
public class Pai { 
 public void pai(char[] array,int start,int end){
  System.out.println(" -- ×éºÏ "+start+" µ½ "+end+" --");
  if(start==end){
  ......

java filterÓ÷¨´óÈ«

¹Ø¼ü×Ö: filter
    ¹ýÂËÆ÷FilterÒ²¾ßÓÐÉúÃüÖÜÆÚ£ºinit()->doFilter()->destroy()£¬Óɲ¿ÊðÎļþÖеÄfilterÔªËØÇý¶¯¡£ÔÚservlet2.4ÖУ¬¹ýÂËÆ÷ͬÑù¿ÉÒÔÓÃÓÚÇëÇó·ÖÅÉÆ÷£¬µ«ÐëÔÚweb.xmlÖÐÉùÃ÷£¬<dispatcher>INCLUDE»òFORWARD»òREQUEST»òERROR</dispatcher>¸ÃÔªËØÎ»ÓÚfilter-mappingÖС£
Ò»¡ ......
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