Code To Download A File From A Website

Dec 3, 2014

I currently have the following code that I use to download a file from a website:

URL website = new URL(imgurl);
ReadableByteChannel rbc = Channels.newChannel(website.openStream());
FileOutputStream fos = new FileOutputStream(dir+""+imageNumber + "." + extension);
fos.getChannel().transferFrom(rbc, 0, Long.MAX_VALUE);
fos.close();

Usually, the code works very well. But sometimes, the download gets stalled indefinitely. Is there a way to set a time out period for the downloading of this file?

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Swing/AWT/SWT :: How To Download File Using Dynamic Download Path Name Using FileChooser

Apr 11, 2015

I have a FileChooser:

JFrame parentFrame = new JFrame();
JFileChooser fileChooser = new JFileChooser();
fileChooser.setDialogTitle(txtPushCode.getText());
int userSelection = fileChooser.showSaveDialog(parentFrame);
if (userSelection == JFileChooser.APPROVE_OPTION) {

[Code] ....

But as you can see, it downloads only to "C:android empcoloricon.png". I want to download it to path where I chose in FileChooser with the name and extension I choose. In short, how can I use dynamic file path names in where ever I want in my applications?

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Nov 24, 2014

I got a very simple code:

InputStream inputStream = null;
OutputStream outputStream = null;
try {
URL url = new URL(imgfm);
inputStream = url.openStream();
outputStream = new FileOutputStream(imgto);
 byte[] buffer = new byte[2048];
int length;

[Code] ....

I have several pic to download (e.g 30) however, the code work for some pic (workable for a random number of pic, sometimes workable for 10 pics but sometime can only download 1 pics).

I try to input several println code to found out the problem. finally i found that all the code stop (it's stop as when i use debug process in eclipse, it get no respond) and the final appear code under console is:

2048
Start abc/testing.jpg
Finished
2048
Start abc/testing.jpg
Finished
2048
Start abc/testing.jpg
Finished
1935
Start abc/testing.jpg
Finished

It cant even go to "System.out.println("Can come to here!");"

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Jul 10, 2014

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I have a code which is like this ...

import lotus.domino.*;
public class NotesJavaShell extends AgentBase{
 // Public fields. 
// Local vars
private Session session;

[code]....

As I said i have a mail box configured.. What should I place in config_server, log_server, source_server?

I am getting an error as : Notes error code 4000. Could not open configuration database

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I am running java 1.8 under 64 bit windows 7, using the code below I failed to log in, I am getting the log in page but not being logged in.

import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;

[Code] .....

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I have been given a task to scan the contents of a websites source code, and use delimiters to extract all hyperlinks from the site and display them. We havent been told anything about how to do this so after some looking around online this is what I have so far:

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.MalformedURLException;
import java.net.URL;
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[Code] ....

So my program can extract each line from the source code of a website and display it, but realistically I want it to extract each WORD as such from the source code rather than every line. I've looked around online but I don't really know how it's done because I keep getting errors when I use input.read();

How to make it extract each word from the source code?

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I am trying to display the files stored in server using jsp. I used the code below to display. But for pdf it is asking to download (No option for open). For XLS, XLSX, DOCX, PPT and PPTX it is showing zip file to download. For type doc it is showing junk data.

<%
String fileName=(String)request.getAttribute("fileName");
int loc = fileName.lastIndexOf(".");
String fileName1 = fileName.substring(0, loc);
String fileName2 = fileName.substring(loc + 1, fileName.length());

[Code] ...

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Jul 10, 2014

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public void downloadFile() {
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HttpServletResponse response = (HttpServletResponse) FacesContext.getCurrentInstance().getExternalContext().getResponse();

response.setHeader("Content-Disposition", "attachment;filename=file.xml");
response.setContentLength((int) file.length());
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[Code] .....

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Jan 5, 2014

Is there a way to measure current download speed of a file being downloaded? I've searched all over google and the only thing i get is average download speed. This is basically how it is being done, the result is average download speed.

Java Code:

OutputStream out = null;
URLConnection conn;
InputStream in = null;
long startup = System.currentTimeMillis();
try {
URL url = new URL(adress);
out = new BufferedOutputStream(

[Code] .....

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Mar 7, 2014

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Jun 16, 2014

I have also tried above code with few changes but I got error. Code and error show below.

Java Code:

package practice;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.net.MalformedURLException;

[Code] .....

Error:

Java Code:

Jun 16, 2014 6:21:33 PM practice.TestFTPProgram main
SEVERE: null
java.net.ConnectException: Connection refused: connect
at java.net.DualStackPlainSocketImpl.connect0(Native Method)
at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source)
at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)

[Code] .....

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Aug 15, 2014

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Sample code

pResponse.setContentType("application/pdf");
((HttpServletResponse) pResponse).setHeader("Content-Disposition", "attachment; filename=report.pdf");

//Get the output stream for writing PDF object
OutputStream outStream=pResponse.getOutputStream();
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[Code] ....

I need to convert the sample download.jsp to html so that i can parse

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Recently we got an issue about file download. We are using below code to fetch the data from backend(DB2) and export to excel.

Before Jan 15 it use to take 2 minutes to download the file (2 MB size). But now its taking half an hour to download.

response.setContentType("application/vnd.ms-excel");
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We have restarted server, system but still problem exists. We found that there is no code level or data base level or network level issues.

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The author gives an example saying that if you have a class Multiple.java and in that class, you have:

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I am trying to write a java code for a homework problem in my intro java class but im having problems. This is the problem:

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The serperate myfile.txt has this

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and this is what the code is suppose to look like after you run it : Java33.png

And this is what i have so far : Java22.png

what needs to go next to complete the javascript to show the first 5 lines of the text files?

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import java.util.ArrayList;
import java.io.*;
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[Code] ....

Java Result: 1

BUILD SUCCESSFUL (total time: 0 seconds) mh_sh_highlight_all('java');

On a side note, is it normal if almost everything I writer has to be debugged?

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[code]....

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the code I use is below:

Java Code:

finally{
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