Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

JavaÎļþÏÂÔØµÄ¼¸ÖÖ·½Ê½

´ÓÍøÉÏ¿´µ½Ò»¸ö²»´íµÄjavaÎļþÏÂÔØµÄ¼¸ÖÖ·½Ê½ÎÄÕ£¬ÄùýÀ´¸ú´ó¼Ò·ÖÏíһϣº
JavaÎļþÏÂÔØµÄ¼¸ÖÖ·½Ê½
    public HttpServletResponse download(String path, HttpServletResponse response) {
        try {
            // pathÊÇÖ¸ÓûÏÂÔØµÄÎļþµÄ·¾¶¡£
            File file = new File(path);
            // È¡µÃÎļþÃû¡£
            String filename = file.getName();
            // È¡µÃÎļþµÄºó׺Ãû¡£
            String ext = filename.substring(filename.lastIndexOf(".") + 1).toUpperCase();
            // ÒÔÁ÷µÄÐÎʽÏÂÔØÎļþ¡£
            InputStream fis = new BufferedInputStream(new FileInputStream(path));
            byte[] buffer = new byte[fis.available()];
            fis.read(buffer);
            fis.close();
            // Çå¿Õresponse
            response.reset();
            // ÉèÖÃresponseµÄHeader
            response.addHeader("Content-Disposition",&n


Ïà¹ØÎĵµ£º

java »ñÈ¡Îļþ¼Ð´óС£¬Îļþ´óС£¬Îļþ¸öÊý

import java.io.File;
import java.text.DecimalFormat;
import java.io.FileInputStream;
public class GetFileSize
{
    public long getFileSizes(File f) throws Exception{//È¡µÃÎļþ´óС
        long s=0;
        ......

JAVAѧϰ±Ê¼Ç(1)

jdk,j2ee,j2se,j2meµÄ¸ÅÄîÇø±ð
1.
JDKÊÇJava development toolkit,Ï൱ÓÚÊÇJavaµÄ¿âº¯Êý£¬ÊDZàÒ룬ÔËÐÐjava³ÌÐòµÄ¹¤¾ß°ü¡£
J2EEÊÇJava 2 enterprise editionÊÇJavaµÄÒ»ÖÖÆóÒµ°æÓÃÓÚÆóÒµ¼¶µÄÓ¦Ó÷þÎñ¿ª·¢
J2SEÊÇJava 2 standard editionÊÇJavaµÄ±ê×¼°æ,ÓÃÓÚ±ê×¼µÄÓ¦Óÿª·¢
J2MEÊÇJava 2 Micro EditionÊÇJavaµÄ΢ÐͰæ,³£ ......

javaÏß³Ì

Ò»ÖÖÊǼ̳Ð×ÔThreadÀà.Thread ÀàÊÇÒ»¸ö¾ßÌåµÄÀ࣬¼´²»ÊdzéÏóÀ࣬¸ÃÀà·â×°ÁËÏ̵߳ÄÐÐΪ¡£Òª´´½¨Ò»¸öỊ̈߳¬³ÌÐòÔ±±ØÐë´´½¨Ò»¸ö´Ó Thread Àർ³öµÄÐÂÀà¡£³ÌÐòԱͨ¹ý¸²¸Ç Thread µÄ run() º¯ÊýÀ´Íê³ÉÓÐÓõŤ×÷¡£Óû§²¢²»Ö±½Óµ÷Óô˺¯Êý£»¶øÊÇͨ¹ýµ÷Óà Thread µÄ start() º¯Êý£¬¸Ãº¯ÊýÔÙµ÷Óà run()¡£
   
&nb ......

JavaÊý×éÓëÈÝÆ÷Àà·ÖÎö×ÊÁÏ Êý×é¡¢ListºÍSet¡¢MapµÈ

Êý×éÊÇJavaÓïÑÔÄÚÖõÄÀàÐÍ£¬³ý´ËÖ®Í⣬JavaÓжàÖÖ±£´æ¶ÔÏóÒýÓõķ½Ê½¡£JavaÀà¿âÌṩÁËÒ»Ì×Ï൱ÍêÕûµÄÈÝÆ÷À࣬ʹÓÃÕâЩÀàµÄ·½·¨¿ÉÒÔ±£´æºÍ²Ù×ݶÔÏó¡£ÏÂÃæ·Ö±ð½øÐÐÌÖÂÛ£¬ÔÚÑо¿JavaÈÝÆ÷Àà֮ǰ£¬ÏÈÁ˽âÒ»ÏÂJavaÊý×éµÄ»ù±¾¹¦ÄܺÍÌØÐÔ¡£
1. Êý×éµÄ»ù±¾ÌØÐÔ
Êý×éÓëÆäËüÖÖÀàµÄÈÝÆ÷(List/Set/Map)Ö®¼äµÄÇø±ðÔÚÓÚЧÂÊ¡¢È ......

ת[ÊÕ¼¯javaµÄ³£Óú¯Êý´úÂë]

package net.java2000.tools;
/**
* Title:        Java Bean ¹¤¾ß
* Description:
* Copyright:    Copyright (c) 2001
* Company:      JAVAÊÀ¼ÍÍø 
* @author ÕÔѧÇì
* @version 1.0
*/
import java.util.*;
import ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ