package?com.zzk;

import?java.io.BufferedInputStream;
import?java.io.File;
import?java.io.InputStream;
import?java.io.RandomAccessFile;
import?java.net.HttpURLConnection;
import?java.net.URL;

import?javax.swing.JOptionPane;

public?class?DownMultiThread?implements?Runnable{
????private?String?sUrl?=?““;//?網(wǎng)絡(luò)資源地址
????private?File?desFile;//?需要寫入的目標(biāo)文件對(duì)象
????private?long?startPos;//?寫入的開(kāi)始位置
????private?long?endPos;//?寫入的結(jié)束位置
????/**
?????*?@param?sUrl?網(wǎng)絡(luò)資源地址
?????*?@param?file?需要寫入的目標(biāo)文件對(duì)象
?????*?@param?startPos?寫入的開(kāi)始位置
?????*?@param?endPos?寫入的結(jié)束位置
?????*/
????public?DownMultiThread（String?sUrlFile?desFilelong?startPoslong?endPos）?{
????????this.sUrl?=?sUrl;
????????this.desFile?=?desFile;
????????this.startPos?=?startPos;
????????this.endPos?=?endPos;
????}
????@Override
????public?void?run（）?{
????????try?{
????????????URL?url?=?new?URL（sUrl）;//?創(chuàng)建下載資源的URL對(duì)象
????????????HttpURLConnection?conn?=?（HttpURLConnection）url.openConnection（）;//?打開(kāi)連接對(duì)象
???????

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----
?????文件?????????301??2010-09-09?10:55??.classpath
?????文件?????????379??2011-01-04?14:13??.project
?????文件?????????629??2010-09-09?10:55??.settings\org.eclipse.jdt.core.prefs
?????文件????????2371??2011-01-28?13:36??bin\com\zzk\DownMultiThread.class
?????文件?????????779??2011-01-28?13:36??bin\com\zzk\MultiThreadDownframe$1.class
?????文件????????1140??2011-01-28?13:36??bin\com\zzk\MultiThreadDownframe$2.class
?????文件?????????861??2011-01-28?13:36??bin\com\zzk\MultiThreadDownframe$3.class
?????文件?????????748??2011-01-28?13:36??bin\com\zzk\MultiThreadDownframe$4.class
?????文件????????3501??2011-01-28?13:36??bin\com\zzk\MultiThreadDownframe.class
?????文件????????2317??2010-11-25?09:45??src\com\zzk\DownMultiThread.java
?????文件????????4563??2010-11-25?08:40??src\com\zzk\MultiThreadDownframe.java