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/*¶Ô´«ÈëµÄÏòÁ¿½øÐÐÅÅÐò(°´ÕÕ²ÎÓëÕßÐÕÃûÅÅÐò)*/ public Vector[] Sort(Vector vtID, Vector vtName) {
Vector[] vt = {vtID, vtName};
String exChangeID = null;
String exChangeName = null;
//Comparator cmp = Collator.getInstance(java.util.Locale.CHINA);
//Arrays.sort(vtName, cmp);
//Collator.getInstance(Locale.CHINESE)
String exChange1=null;
String exChange2=null;
for(int i=0;i


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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 ......

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1¡¢ÔÚÔËÐнçÃæ£¨cmd½øÈ룩ÖÐÔËÐÐÃüÁjava -Xms256m -Xmx1024m£¬Î¬»¤ÉÏÏÂÏÞÄÚ´æ²ÎÊý£¬×î´óÄÚ´æ²»ÄÜ´í¹ýϵͳÄÚ´æµÄ1/4£¬×îСÄÚ´æ²»ÄÜСÓÚ×î´óÄÚ´æµÄ1/4
2¡¢ÔÚTommcat /bin·¾¶Ï£¬Èç¹ûÊǰ²×°°æÐèÒªservice.batÎļþ,´ËÎļþÔÚ½âѹËõ°æÀï¡£
3¡¢ ÔÚÔËÐнçÃæ£¨cmd½øÈ룩ÖÐ ......

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float ff= 1.3f;(4B)
int 4B;
long 8B;
double 8B;
byte Ò»×Ö½ÚÕûÐÍ
char 2B
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int num[] = new int[3];
int[] num;
num = new int[3];
int [] num = new int[]{1,2,3};
int [][] num;
num = new int[3][4];
//²»Í¬³¤
num = new int[3][];
num[0] = new int[5]; ......

JavaÖжÔÎļþµÄ¸÷ÖÖ²Ù×÷

//java.io
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/**
* Title: ÎļþµÄ¸÷ÖÖ²Ù×÷
* Copyright: Copyright (c) 2004
* Company: ¹ã¶« ÓÐÏÞ¹«Ë¾
* @author ÍøÂçÐÅÏ¢²¿ Çì·á
* @version 1.0
*/
 
p ......

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1¡¢ÀûÓÃSystem.getProperty()º¯Êý»ñÈ¡µ±Ç°Â·¾¶£º
System.out.println(System.getProperty("user.dir"));//user.dirÖ¸¶¨Á˵±Ç°µÄ·¾¶
2¡¢Ê¹ÓÃFileÌṩµÄº¯Êý»ñÈ¡µ±Ç°Â·¾¶£º
File directory = new File("");//É趨Ϊµ±Ç°Îļþ¼Ð
try{
    System.out.println(directory.getCanonicalPa ......
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