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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]);
  }
 }
}


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Javaµ÷ÓÃOracleÊý¾Ý¿âµÄ·ÖÒ³´æ´¢¹ý³Ì

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

Java Reflection

 
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API¡£Java5.0
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Ê×ÏÈ·´ÉäµÄÈë¿ÚÊÇ´ÓClass¿ ......

»ùÊýÅÅÐò java Ëã·¨

package sort;
public class RadixSort {
 // Çóx ÊýµÚdλÉϵÄÊý×Ö£¬ÀýÈç12345£¬Ê®Î»Êý×ÖÊÇ4  12345/10%10=4
 // d=0 ±íʾ¸öλ £»d=1 ±íʾʮλ...ÒÀ´ÎÀàÍÆ
 public static int digit(int d,int x){
  return x/(int)Math.pow(10, d)%10;
 }
 
 public static void ra ......

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;
......
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