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49.Îı¾²éÕÒÌæ»»
//import java.nio.*;
String s1=%%1;
String s2=%%2;
String s3=%%3;
int pos=%%4;
  /*±äÁ¿iºÍj·Ö±ð±íʾÖ÷´®ºÍģʽ´®Öе±Ç°×Ö·û´®µÄλÖã¬k±íʾƥÅä´ÎÊý*/
  int i,j,k=0;
  i = pos;
  j = 0;
  //½«s1ת»¯³ÉStringBufferÐͽøÐвÙ×÷
  repStr = new StringBuffer(s1);
  while(i<repStr.length()&&j<s2.length())
  {
  if(repStr.charAt(i) == s2.charAt(j))
  {
 ++i; ++j;
 if(j==s2.length())
 {
 /*j=s2.length()±íʾ×Ö·û´®Æ¥Åä³É¹¦£¬Æ¥Åä´ÎÊý¼Ó1£¬´ËÍâ¶ÔÖ÷´®½øÐÐ×Ö·û´®Ìæ»»*/
 k = k+1;
 repStr.replace(i-j,i,s3);
 //½«j½øÐÐÖØÐ¸³Öµ¿ªÊ¼ÐµıȽÏ
 j = 0;
 }
  }
  else {i = i-j+1; j = 0;}
  }
  return k;
50.Îļþ¹ØÁª
//import java.io.*;
try {
Runtime.getRuntime().exec(%%1); //"assoc .txt =mynote" "assoc [.ext[=[filetype]]]" 
} catch (IOException e) {
e.printStackTrace();
}
52.ÉèÖÃJDK»·¾³±äÁ¿
@echo off 
IF EXIST %1\bin\java.exe ( 
rem ÈçÊäÈëÕýÈ·µÄ Java2SDK °²×°Ä¿Â¼£¬¿ªÊ¼ÉèÖû·¾³±äÁ¿ 
@setx JAVA_HOME %1 
@setx path %path%;%JAVA_HOME%\bin 
@setx classpath %classpath%;. 
@setx classpath %classpath%;%JAVA_HOME%\lib\tools.jar 
@setx classpath %classpath%;%JAVA_HOME%\lib\dt.jar 
@setx classpath %classpath%;%JAVA_HOME%\jre\lib\rt.jar 
@echo on 
@echo Java 2 SDK »·¾³²ÎÊýÉèÖÃÍê±Ï£¬Õý³£Í˳ö¡£ 
) ELSE ( 
IF "%1"=="" ( 
rem ÈçûÓÐÌṩ°²×°Ä¿Â¼£¬Ìáʾ֮ºóÍ˳ö
@echo on
@echo Ã»ÓÐÌṩ Java2SDK µÄ°²×°Ä¿Â¼,²»×öÈκÎÉèÖã¬ÏÖÔÚÍ˳ö»·¾³±äÁ¿ÉèÖá£
) ELSE 


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1.Duplicated Code ´úÂëÖØ¸´¼¸ºõÊÇ×î³£¼ûµÄÒìζÁË¡£ËûÒ²ÊÇRefactoringµÄÖ÷ҪĿ±êÖ®Ò»¡£´úÂëÖØ¸´ÍùÍùÀ´×ÔÓÚcopy-and-pasteµÄ±à³Ì·ç¸ñ¡£ÓëËûÏà¶ÔÓ¦OAOOÊÇÒ»¸öºÃϵͳµÄÖØÒª±êÖ¾¡£ 2.Long method ËüÊÇ´«Í³½á¹¹»¯µÄ“ÒŶ¾”¡£Ò»¸ö·½·¨Ó¦µ±¾ßÓÐ×ÔÎÒ¶ÀÁ¢µÄÒâͼ£¬²»Òª°Ñ¼¸¸öÒâͼ·ÅÔÚÒ»Æð¡£ 3.Large Class ´óÀà¾ÍÊÇÄã°ÑÌ«¶ ......

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package com;
import java.io.File;
import java.io.IOException;
import java.text.DateFormat;
import jxl.Workbook;
import jxl.format.UnderlineStyle;
import jxl.write.DateTime;
import jxl.write.Label;
import jxl.write.Number ......

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Authenticator.setDefault() °²×°Ò»¸ö Authenticator¡£ÕâÑù£¬µ±ÐèÒªÈÏ֤ʱ£¬ÒѰ²×°µÄ Authenticator µÄ
getPasswordAuthentication() ·½·¨¾Í»á±»µ÷Óã¬È»ºóÄú¾Í¿ÉÒÔÓÃÊʵ±µÄÓû§ÃûºÍ¿ÚÁîÀ´ÉèÖà PasswordAuthentication ʵÀý¡£¾ÍÕâô¼òµ¥¡£ 
 
package
cn.arthurs.web;
import ja ......

java BigdecimalµÄÓ¦ÓÃ

import java.io.*;
import java.math.*;
import java.util.*;
public class Main
{
    public static void main(String[] args)
    {
        Scanner cin=new Scanner(System.in);
        BigDecimal a; ......

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//import java.io.*;
//import java.util.*;
//import java.util.regex.*; 
//private HashMap configMap=null;
private Map<String, Serializable> configMap=null;
String %%2=null;
if (configMap == null)&n ......
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