Servlets :: Relative Or Absolute Path

Feb 14, 2014

Is /graphics/image.png a relative path or absolute path?

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Use Relative Path In Place Of Absolute Path

Nov 7, 2014

I am copying the xml files from one folder to other folder, in the source folder, i have some files which have some content like "backing File="$IDP_ ROOT/metadata/iPAU-SP-metadata.xml" but while writing to the destination folder.i am replacing the "$IDP_ROOT" with my current working directory. The entire copying of files is for deploying into tomcat server. The copying is done only when server starts for the first time.Problem: If i change the folder name from my root path in my machine after i run the server,the entire process will be stopped because the destination folder files already contains the content which is with existed files names or folder names.

So i want to change it to relative path instead absolute path. What is the best way to do it? Please look at code below:

[ // Getting the current working directory
String currentdir = new File(".").getAbsoluteFile().getParent() + File.separator;

if(currentdir.indexOf("ControlPanel")!=-1){
rootPath=currentdir.substring(0, currentdir.indexOf("ControlPanel"));
}else{
rootPath=currentdir;

[code]....

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FileNotFoundException With Java Scanner With Absolute File Path

Apr 8, 2014

I'm a Java beginner and I've been trying to scan a file using the Java Scanner. I've tried searching online for this error and I only find people's questions who have entered an incorrect relative path. I'm entering in an absolute path and I'm using Eclipse Standard Edition on a 2013 MacBook Pro with Mavericks 10.9.2.

Anyway, the error message I'm receiving on Eclipse is: Exception in thread "main" java.lang.Error: Unresolved compilation problem: Unhandled exception type FileNotFoundException

at App.main(App.java:12)
public class App {
public static void main(String[] args){
String fileName = "/Users/Student/Documents/index.html";

[code]...

Why it cannot find this file. I've checked the absolute file path of index.html on my Mac and I've copied and pasted it into my code.

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Relative Path Not Working

Sep 11, 2014

relative path not working if specified folder is outside eclipse IDE, but if i put same folder in current project it is working.

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Swing/AWT/SWT :: Loading Image From Relative Path

Mar 15, 2015

All I want to do is load an image into a swing JLabel and display it, but I'm going to have to make a JAR of the program and submit it for grading, so I need to be able to get the path of the image file relative to the JAR (at least I think that's how it works - I've never made a JAR before. Right now I'm just trying to load it from a path relative to my netbeans project). I've tried at least 20 different combinations of paths, file locations within the project, etc., but nothing works.

Anyways, here's the test class I've been using to try to figure this out in its current iteration. Right now the image I want to load is in src/resources and the class is in

src/imagedisplaytest
package imagedisplaytest;
import javax.swing.*;
import java.awt.*;
public class ImageDisplayTest extends JFrame {
private JLabel testLabel;
public ImageDisplayTest()

[Code]...

What's the best way to do this?

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JavaFX 2.0 :: Native Package For Mac And Relative Path

Dec 3, 2014

I done a small application with Javafx that start an Embedded Jetty. All works fine in Windows also with native package. Instead in Mac it works only before native packaging. Seems that the problem is how relative path are considered.
 
The tree of the content is this:
myfile.jar
webapp (folder)
libs (folder)
 
Look at this code:
 
                String webAppDir = "webapp";
                File f = new File(webAppDir);
                log.debug("Path webapp folder: " + f.getAbsolutePath());
                if (!f.exists())
                    throw new Exception("The folder " + f.getAbsolutePath() + " doesn't exist");

[Code] .... 

The problem is that before the packaging in Mac the relative path is that where the main .jar is located an so the code works because the webapp folder is found. Instead after the bundle the path became /Users/MyUser/webapp and of course the folder is not found because it is bundled inside the file.app near the libs folder.

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Swing/AWT/SWT :: Getting Images From Folder Inside Project - Relative Path

Jul 17, 2014

I'm going through the next problem:

importing a project from Eclipse into NetBeans, I tried importing project, did not work, anyway

I got all the classes good, but I got a folder with images and a TXT file

part of the code:

listaIconsPlayers[0]=(IconsUtils.makeIcon("imagespinspin_blue.png",dimensaoPinGrande,"pin_blue"));
listaIconsPlayers[1]=(IconsUtils.makeIcon("imagespinspin_green.png",dimensaoPinGrande,"pin_green"));
listaIconsPlayers[2]=(IconsUtils.makeIcon("imagespinspin_purple.png",dimensaoPinGrande,"pin_purple"));
listaIconsPlayers[3]=(IconsUtils.makeIcon("imagespinspin_red.png",dimensaoPinGrande,"pin_red"));
listaIconsPlayers[4]=(IconsUtils.makeIcon("imagespinspin_yellow.png",dimensaoPinGrande,"pin_yellow"));

Where do I place my folder Images and how can I configure this so this lines of code go get that images from a folder inside the project..

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Servlets :: Getting Path Of The Base URL?

Feb 5, 2014

I have a data.json in my J2EE web app.I need to load it either from local path when unit testing or from url when the server starts up.

so I've set it to get the local path by default and what I'm trying to do is that it is is running on a server, I'd like to change the path to a url.

Here is my code:

public String getUrlBase(HttpServletRequest request) {
URL requestUrl;
try {
requestUrl = new URL(request.getRequestURL().toString());
String portString = requestUrl.getPort() == -1 ? "" : ":" + requestUrl.getPort();
return requestUrl.getProtocol() + "://" + requestUrl.getHost() + portString + request.getContextPath() + "/";
} catch (MalformedURLException e) {
e.printStackTrace();
}
return null;
}

which works fine. The only issue is that I had to place this in the login page. Is there a way I can only set the path to the base url upon server start up?

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Servlets :: Context Path After Forward

Mar 23, 2015

I have normal adress which works, like

localhost/contextPath/foo

In URL rewrite filter I forward that call like

((HttpServletRequest) req).getRequestDispatcher(".....foo1.jsp").forward(req, res);

And it gets there. On that page (foo1.jsp) I have link to original href

<a href="localhost/contextPath/foo">click.</a>

When I click that, in url rewrite filter I get:

String url = ((HttpServletRequest)req).getRequestURL().toString();// http://contextPath/foo/contextPath/foo
String uri = ((HttpServletRequest)req).getRequestURI().toString();// /contextPath/foo/contextPath/foo

which is bad address. How to handle that and why it happens ?

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Servlets :: Unable To Get Path Of File When Upload Files In Server After Browsing Folders

Jun 30, 2014

I have a code that uploads files in server after browsing folders and files then get the paths of files but I have a problem in getting the paths

List items = upload.parseRequest(request);
Iterator iterator = items.iterator();
while (iterator.hasNext()) {
FileItem item = (FileItem) iterator.next();
if (!item.isFormField())
{ fileName = item.getName();
root = getServletContext().getRealPath("/");
path = new File(root + "/uploads");

[Code]...

list1 must has paths that I want but I do not get the paths of upload files

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Servlets :: How To Upload File To Dropbox With Only File Name (without Path) Using Java

Dec 1, 2014

In my web application i want to upload file to drop-box. I am getting file name from browser.Is it possible to upload file to drop-box with only file name.

Below the drop-box upload code with java.

File inputFile = new File("New Text Document.txt");
System.out.println("inputFile.getAbsoluteFile(): " + inputFile);
FileInputStream inputStream = new FileInputStream(inputFile);
try {
DbxEntry.File uploadedFile = client.uploadFile("/magnum-opus.txt",
DbxWriteMode.add(), inputFile.length(), inputStream);
System.out.println("Uploaded: " + uploadedFile.toString());
} finally {
inputStream.close();
}

In the above code the place New Text Document.txt we have to provide total path of file.

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Is It Safe To Set Font With Absolute Parameters

Feb 14, 2015

I was wondering, if, for example I set font for my textarea like this:

area.setFont(new Font("Serif", Font.ITALIC, 18));

Is that last parameter, in this case 18, will be actually the same size for all users? Maybe I should avoid these absolute numbers?

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Method Call That Takes Large Of Two Absolute Values

Oct 6, 2014

Write a method called largerAbsVal that takes two integers as parameters and returns the larger of the two absolute values. A call of largerAbsVal(11, 2) would return 11, and a call of largerAbsVal(4, -5) would return 5.

I have tried this code using methods in the Math Class but I am getting an error in Practice-it that says

Line 4
Your method's return type is void, which means that it does not return a value. But your code is trying to return a value. This is not allowed.

cannot return a value from method whose result type is void
return Math.max(Math.abs(Num1), Math.abs(Num2));

Here is my code. What I am doing wrong?

public static void largerAbsVal (int Num1, int Num2)

return Math.max(Math.abs(Num1), Math.abs(Num2));
}

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Abs - Return New IntClass Object Representing Absolute Value Of Argument

Feb 19, 2014

I don't know how to define "abs." Here are the instructions:
 
The purpose of this exercise is to add to the IntClass class below a method, abs, that takes as its only argument an IntClass object and returns a new IntClass object representing the absolute value of the argument.
 
Define the desired method as a class method.
 
Define the desired method as an instance method.
 
In each case, use the main method to test your code.

There's two boxes of editable code. I'm having trouble with the first one, the one with "abs."

Here is more code:

My code goes here
 
}

Here's another box of code that they want me to fill out:
 
public class MainClass
{
public static void main( String[] args )
{
 
My code goes here...

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Can't Get Relative Paths To Work

Apr 25, 2014

I can't get Relative paths to work. I have created the class.dat file and I can't get java to recognize it. I am using Eclipse as an IDE. Was wondering if I could get Eclipse to recognize it. I tried with a .txt file as well and couldn't get that to work.

import java.io.*;
public class ReadBytes
{
public static void main(String[] args)
{
try
{
FileInputStream file = new FileInputStream("class.dat");

[Code] .....

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Batch File With Some Relative Folders

Jul 17, 2014

Batch file (. BAT) problems with some folders on. I created an application in Java and put the JRE folder within the application, because some users do not have Java installed on your machine and the way I did, my application runs. JAR with the JRE that is contained in my application but I created a BAT file that contains the following command:

start "" jre8 bin javaw-jar app.jar

So I run my program in java through the file. BAT calling JRE that is inside the folder and then this JRE runs the mine. JAR and works great anywhere in windows, worked well on a USB key with this command is within. BAT (start "" jre8 bin javaw-jar app.jar).

BAT in certain folders, eg Program Files and Program Files (x86), I need this code to be able to find any directory, regardless of whether the directory has spaces in the name, symbols, numbers or anything else, because maybe people will put the application folder to another location or rename the folder, and if this happens the program will stop working? And especially do not give problems to run inside the Program Files and Program Files (x86) because the application runs everywhere except in these two folders.

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JPanel Rectangle Drawing Relative To The Full Window

Jun 16, 2014

I'm currently making a Breakout clone to learn about different ways of organizing my code and whatnot but I've run into a problem with the positioning of some pieces versus the position of the mouse.

I've created a blue rectangle on the screen that turns white when the mouse hovers over it, BUT it actually only ends up turning white about halfway down and then continues on off the block. I moved the rectangle to 0,0 to see where it draws and it looks like it is drawing to the very top left corner of the window itself but for the mouse coordinates, the top left is just where the black area is and excludes the borders of the window.

Here is the class rendering the rectangle, it extends from a class that in turn extends from the JPanel class:

public class MainMenuState extends MenuState {
JFrame gameFrame;
Graphics2D g;
// PlayButton variables
int playPosX = 0;
int playPosY = 0;
int playWidth = 100;
int playHeight = 50;

[Code] ....

A few other things I tried that I can think off the top of my head: Play around with different layouts (at times this caused the screen to shrink to a small size as well as using pack()), using setSize() setLocation() or setBorder() in the MainMenuState class which had no effect.

Someone on another forum also suggested trying to utilize component.getLocationOnScreen(): I tried two things with the getXOnScreen method, first subtracting with the location of the JPanel which of course gave me the same problem. After that I tried

MOUSE.x = event.getXOnScreen() - gameFrame.getLocationOnScreen().x;
MOUSE.y = event.getYOnScreen() - gameFrame.getLocationOnScreen().y;

but that resulted in some errors (null pointers) and the mouse was just printing out a position of 0,0

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JavaFX 2.0 :: SceneBuilder - Preview Classpath-relative Images

May 7, 2014

When I assign a classpath-relative URL to an ImageView's 'Image' property, SceneBuilder is unable to display the Image in the Preview. It shows the text "Image not found" instead as a placeholder, which makes sense. What I'd like to do is add a classpath entry to SceneBuilder such that it is able to locate and display the Images. Any way to accomplish this (or similar)?

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Java Servlet :: Storing Images In Folder And Their Relative Paths In MySQL Database

Nov 16, 2012

I am developing an web application with servlets and jsp. I have an issue to store images. I am storing images in folder and their relative path's in mysql database.

When I retrieve path from database then using <IMG> tag i have displayed image like:

     out.println("<td><img src="+user.getPlaceImage()+" width='70' height='50' /></td>");

It is working fine with internet explorer but not working (that is Not displaying image) in chrome/mozilla.

How to display that image in all browsers....

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How To Set JDK8 As PATH

May 5, 2014

My OS: Windows 7

Problem:

I've tried where javac in command prompt but it can't locate it. I need to know how to set JDK 8 as PATH.

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Set Path To File In Jar App

May 12, 2014

What I do wrong when I trying to set path to file in my jar app. I have application which work with xml file. I have next project structure:

/project_root_directory
|_  /lib
|_  /resources/file.xml
|_  /src
 
So, I need to set correctly path to my jar file, because when I running it from IDE, it works nice. By default it seems:

private File file;
private StreamResult streamResult;
file = new File("resources/file.xml");
streamResult = new StreamResult(file);

And methods where I can modify the DOM structure via transformer in end of methods:

transformer.transform(source, streamResult);

So, I trying set path to file:

private URL url;
...
file = new File(url.getPath());
streamResult = new StreamResult(file);
 
But it didn't not work, because when I trying to get resource by next condition

url = getClass().getResource("resources/file.xml");
url = getClass().getResource("resources/file.xml");url = getClass().getResource(url = getClass().getResource("resources/file.xml");resources/file.xml");
url - is null
Okay..
 
I tried next solution
 
InputStream input = getClass().getResourceAsStream("resources/file.xml"); 
 
There, I got also null....
 
Also, I tried made absolute path
 
filePath = file.getAbsolutePath();
file = new File(filePath);
streamResult = new StreamResult(file);

But it also didn't work. There I got message seems like: "Can't find resource /User/user1/Desktop/program1/resources/file.xml" - but that's really absolute path to a file.
 
Also, I tried made it via System.getProperty

String filename = "file.xml";
String workingDir = System.getProperty("user.dir");
finalfile = workingDir + File.separator + "resources" + File.separator + filename;
file = new File(finalfile);

I also made unit test which completed with "green light", but in jar its wrong with message "Can't find resource /User/user1/Desktop/program1/resources/file.xm" ....

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The System Cannot Find The Path Specified

Feb 25, 2015

I have the Java Development Kit downloaded in my C file and my book tells me to compile the program I need to open command windowand change the directory where the program is stored. I tried the command cd to change directory and received this message "The system cannot find the path specified."

I checked the Environment Variables on Windows 7 and the Path says: C:Program Files (x86)Javajre1.8.0_31in

This is after many tries and i still can't change directory and i keep getting the same message.

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Java Path Variable

Mar 2, 2014

I have BlueJ installed on my computer and it does the job of compiling the java source code written in it. If I want to write and compile source code outside of BlueJ do I still need to download the Java SDK and set the PATH variable, even though I am apparently able to do it in BlueJ?

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System Cannot Find Path Specified

Feb 24, 2015

I have the Java Development Kit downloaded in my C file and my book tells me to compile the program I need to open command windowand change the directory where the program is stored. I tried the command cd to change directory and received this message "The system cannot find the path specified." I checked the Environment Variables on Windows 7 and the Path says: C:Program Files (x86)Javajre1.8.0_31in

This is after many tries and i still can't change directory and i keep getting the same message.The book I am using to learn Java is "Java How to Program: Tenth Edition" from Paul and Harvey Deitel.

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How To Change Maven Path

Jan 8, 2014

When I write below command:

which mvn

I see below output

/usr/bin/mvn

But it is not the maven installed by me. I think it came with linux

Now I want to change mvn path with following command:

export M2_HOME=/usr/local/apache-maven/apache-maven-2.2.1
export M2=%M2_HOME%bin

But it does not change. I still see

which mvn

I see below output

/usr/bin/mvn

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Class Path With Windows 7

May 28, 2010

I've just got a new computer and i tried to set the class path the way i did with windows xp but it's not working. This is what i have done. I added a Path variable to user variables and added C: Program Files (x86)Javajdk1.6.0_20/bin as the variable value. But when i got to command prompt and type javac HelloWorld.java it just tells me javac is not recognised as an internal or external command.

Also another problem is after trying this and it not working i tried to add a path to the system variables. I added a new path variable but i think once i did that it deleted the one that was already there. Is that going to mess up my computer? What the default path variable for windows 7 is?i've got the right destination as i typed cd to change directory and when i typed C: Program Files (x86)Javajdk1.6.0_20/bin it changed to that. And i noticed if i typed in the destination wrong its just made an error.

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