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ÎÒµÄʵÏÖ¾ÍÊÇ×ö¸öfor()  È»ºóÓÃsubString À´½ØÈ¡¡£¡£²»¹ýÎÒ·¢ÏÖЧÂʺܵ͡£¡£¡£¡£
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Ô­À´ÊÇ D234F4E5FF
ÎÒÒª°ÑÉÏÃæµÄ×Ö·û ϸ·Ö³É string str[]={"D2","34","F4"........} µÈµÈ

ÊDz»ÊÇÓɸöº¯Êý½ÐStringTokenizerµÄ¡£¡£È¥²é²édocÔõôÓõİɡ£¡£

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ÎҸоõÖ±½Ó¾ÍsubString°É ûɶ²»ºÃµÄ

subString¾Í¿ÉÒÔÁË£¬StringTokenizerÕâÖÖ Çé¿ö  ²»Ðа¡

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ÏÖÔÚ»¹ÓÐÒ»¸öÎÊÌâ¡£¡£¾ÍÊÇÈçºÎ°Ñ  String cardId="D42BBF2300A300";
ת³É long l = 0XD42BBF2300A300l;




Java code:
public static void main(String args[]){
String str = "D2ddas2131dsaj13jisajiod1jio34F4E5FF";

int end = 0;
int i = 0;

if (str.length()%2 == 0)
end = str.length()-2;
else
end = str.length()-1;

while(i+1 <= end){
System.out.println(str.substring(i, i+2));
i += 2;


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Java code:

import java.awt.*;
import java.awt.event.*;
public class TaskList extends Frame implements ActionListener
{
private Button b1 = new Button("È·¶¨");
private Button ......
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