Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

javaÎļþ·ÃÎÊFileÀ༰Æä¹ýÂË

import java.io.*;
class FileTest
{
 public static void main(String[] args) throws Exception
 {
  //File f=new File("1.txt");
  //f.createNewFile();
  //f.mkdir();
  //File f=new File("E:\\JavaLesson\\Lesson7\\1.txt");//ÔÚWindowsϵͳÏÂ,Óþø¶Ô·¾¶Ï´´½¨Îļþ,ÓÃ\\,\+×ÖĸÊÇÓÃÓÚ
תÒå×Ö·û
  //f.createNewFile();
   //Ïß³Ì˯ÃßÈýÃëÖÓ
  
  File fDir=new File(File.separator);
  String strFile="JavaLesson"+File.separator+"Lesson6";
  File f=new File(fDir,strFile);
  String[] names=f.list(new FilenameFilter()//µÃµ½ÒÔÉÏÎļþ¼ÐÏÂËùÓеÄÎļþÃûºÍĿ¼Ãû,´æ´¢ÔÚnamesÊý×éÖÐ
  //½Ó¿Ú»¹¿ÉÒÔÕâÑùʵÏÖ
  {
   public boolean accept(File dir,String name)
   {
    return name.indexOf(".java")!=-1;
   }
  });
  for(int i=0;i<names.length;i++)
  {
   System.out.println(names[i]);
  }
 }
}


Ïà¹ØÎĵµ£º

Javaµ÷ÓÃOracleÊý¾Ý¿âµÄ·ÖÒ³´æ´¢¹ý³Ì

 ×î½üÏîÄ¿½ø¶È±È½Ï»ºÂý£¬³õ²½Ñо¿ÁËÒ»ÏÂOracleµÄ´æ´¢¹ý³Ì£¬½«´úÂëÌù³öÀ´¡£
 Ê×ÏÈÏÈÌù³öÀ´OracleµÄ·ÖÒ³·ÖÒ³´æ´¢¹ý³Ì´úÂë°É¡£
 1.ÕâÊǰüµÄ´úÂë
 create or replace package DB_Oper is
  -- Author  : LIUBING
  -- Created : 2009-10-28 15:01:30
  -- Purpose : ²âÊÔOracleµ ......

java JNI ³¢ÊÔ

 ¡¡¡¡Ê×ÏÈÒýÓÃһƪÎÄÕ£¬½éÉÜÒ»¸ö¼òµ¥µÄJNIµÄµ÷ÓõĹý³Ì¡£¡¡¡¡JAVAÒÔÆä¿çƽ̨µÄÌØÐÔÉîÊÜÈËÃÇϲ°®£¬¶øÓÖÕýÓÉÓÚËüµÄ¿çƽ̨µÄÄ¿µÄ£¬Ê¹µÃËüºÍ±¾µØ»úÆ÷µÄ¸÷ÖÖÄÚ²¿ÁªÏµ±äµÃºÜÉÙ£¬Ô¼ÊøÁËËüµÄ¹¦ÄÜ¡£½â¾öJAVA¶Ô±¾µØ²Ù×÷µÄÒ»ÖÖ·½·¨¾ÍÊÇJNI¡£¡¡¡¡JAVAͨ¹ýJNIµ÷Óñ¾µØ·½·¨£¬¶ø±¾µØ·½·¨ÊÇÒÔ¿âÎļþµÄÐÎʽ´æ·ÅµÄ£¨ÔÚWINDOWSƽ̨ÉÏÊÇDL ......

Java Reflection

 
·´ÉäÊÇJavaÓïÑÔÖкÜÖØÒªµÄÒ»¸ö×é³É²¿·Ö£¬ËùÒԾʹ˻°ÌâÌÖÂÛµÄ×ÊÔ´¿ÉνÊýÖ®²»¾¡£¬ÈÕ³£¿ª·¢Ò²»á¾­³£Ê¹Óõ½¹ØÓÚ·´ÉäµÄReflection
API¡£Java5.0
Tiger³öÏÖÒԺ󣬸ü¶Ô·´ÉäAPIÓÐÁËеÄÀ©Õ¹£¬¾¡¹ÜÌÖÂ۵ϰÌâºÜ¶à£¬²»¹ýÎÒ»¹ÊǾõµÃ²»¹»È«Ã棬ÓÈÆäÊǶԷºÐÍÕâÒ»¿é£¬ËùÒÔ¾ÍÎÒËùÖª£¬ÔÙ»¨Á¦Æø×ܽáÒ»·¬
Ê×ÏÈ·´ÉäµÄÈë¿ÚÊÇ´ÓClass¿ ......

Java»ñÈ¡ÇëÇó¿Í»§¶ËµÄÕæÊµIPµØÖ·

 ÏñÒÆ¶¯Íø¹ØÒ»Ñù£¬iisforwardÕâ¸öISAPI¹ýÂËÆ÷Ò²»á¶Ôrequest¶ÔÏó½øÐÐÔÙ°ü×°£¬¸½¼ÓһЩWLSÒªÓõÄÍ·ÐÅÏ¢¡£ÕâÖÖÇé¿öÏ£¬Ö±½ÓÓÃrequest.getRemoteAddr()ÊÇÎÞ·¨È¡µ½ÕæÕýµÄ¿Í»§IPµÄ¡£
ʵ¼ÊµÄiisforward¸½¼ÓÍ·ÈçÏ£º
WL-Proxy-Client-IP=211.161.1.239
Proxy-Client-IP=211.161.1.239
X-Forwarded-For=211.161.1.239
WL- ......

Java Á¬½ÓÊý¾Ý¿â¡¢Ö´ÐÐSQL·â×°Àà

/*µ±Ö´ÐÐSQLʱ·¢ÏÖ²»ÄÜÁ¬½ÓÊý¾Ý¿â£¬ÏÈÖØÁ¬Ò»´Î*/
 
import java.io.FileInputStream;
import java.sql.CallableStatement;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ