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FileNotFound exception but there is a file (Java Eclipse)

I cant get rid of this FileNotFound error even though the file exists. Any ideas? (There are hundreds of lines of code so im just going to paste the chunk around the error, if this is an issue I can post more)
// method start
System.out.println(System.getProperty("user.dir"));
File names = new File("src/guiProject/nameList");
System.out.println(names.getAbsolutePath());
// !!!! V ERROR OCCURS HERE V !!!!
BufferedReader br = new BufferedReader(new FileReader(names));
try {
StringBuilder sb = new StringBuilder();
String line = br.readLine();
while (line != null) {
sb.append(line);
line = br.readLine();
}
String allNames = sb.toString();
userListArea.setText(allNames);
} catch (IOException o) {
o.printStackTrace();
} finally {
try {
br.close();
} catch (IOException e1) {
e1.printStackTrace();
}
}
//method end

Probably your Windows does not show file extensions; nameList.txt?
Otherwise the working directory is not in the project directory with subdirectory src.
A FileReader uses the default Charset, so the file is not portable. If you run the application on another platform then the developer's, the encoding is wrong.
Best use UTF-8, full Unicode.
Then the reading strips the line ending:
while (line != null) {
sb.append(line).append("\r\n");
line = br.readLine();
}
You could do:
Path names = Paths.get("src/guiProject/nameList.txt"); // File
Path names = Paths.get(
MyClass.class.getResource("/guiProject/nameList.txt").toURI()); // Resource
String allNames = new String(Files.readAllBytes(names), StandardCharsets.UTF_8);
userListArea.setText(allNames);
If it is a read-only file, stored in the application jar, it is a resource rather than a disk File.

Maybe you are not in the folder you think.
Create a file with a dummy name and get the absolute path of this file, this way you can doublecheck you are where you think you really are.

How to input a correct file name in FileReader method in java

I am working with eclipse and I try to read a HTML file to display it in a web browser (I am doing a http Java server).
I was using FileReader() function and it worked fine, then I restarted eclipse and it gave me the following error:
Exception in thread "main" java.io.FileNotFoundException: index.html
this is how I read the file :
String httpContent;
BufferedReader br = new BufferedReader(new FileReader("index.html"));
try {
StringBuilder sb = new StringBuilder();
String line = br.readLine();
while (line != null) {
sb.append(line);
sb.append("\n");
line = br.readLine();
}
httpContent = sb.toString();
} finally {
br.close();
}
the file "index.html" is on the same level as the java file.
What should I change to get FileReader to work again?

So I don't know if closing eclips resets some parameters but to solve my problem, I just put the path to my HTML file from the project folder
so : src/Ex5/index.html instead of index.html

java find the location of a .jar regardless of where user puts it

In my program I made a saving and loading system for text files. The Save function works perfectly as intended but the Load gives a NullPointerException.
Here's the load function
String path = "C:\\Levels\\File.txt";
LevelHandler.loadLevel(path);
Here's the loadLevel function
public static void loadLevel(String file){
String level = LevelLoader.loadFileAsString(file);
//other, unimportant, code
}
And here's the loadFileAsString function
public static String loadFileAsString(String file){
StringBuilder builder = new StringBuilder();
try {
InputStream in = LevelLoader.class.getResourceAsStream(file);
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(in));
String line;
while((line = bufferedReader.readLine()) != null){
builder.append(line + "\n");
}
} catch (IOException e) {
e.printStackTrace();
}
return builder.toString();
}
It's failing because it's looking for the file in the class folder regardless of what directory I pass in. How can I get the location of the .jar regardless of where the user places it on their computer?

you can get the .jar related location using ./
./ provides related path of your jar

The fix I came up with was to remove the InputStreamreader
BufferedReader bufferedReader = new BufferedReader(new FileReader(file));
This will be able to read files from any specified location on the computer, but still not from inside the jar. However it works perfectly fine with pretty much any other specified location.

I can't read a text file in GWT

I am developing a project with GWT and Netbeans. I have an RPC. I have put a text file in the server package "org.myname.server" and I want to read it with a server side method belonging to the class GWTServiceImpl. The text file and the file GWTServiceImpl.java are in the same package. The code is the following:
String text="";
try
{
BufferedReader br = new BufferedReader(new FileReader("file.txt"));
String line;
while((line = br.readLine()) != null)
{
text=text+line;
System.out.println("here is the line: "+line);
}
br.close();
}
catch (Exception e) { }
return text;
It says that it can't access the file. I haven't included the entire path because the file is in the same folder of the method. So why doesn't it work?

File paths aren't relative to “classes”, but to the “current working directory”, so it'll depend how your server is launched, and will likely be different in development and production.
If the file is packaged as a resource in your webapp, then use the appropriate way of loading it: if it's in WEB-INF/classes or in a JAR in WEB-INF/lib, then use getClass().getResourceAsStream("file.txt"); otherwise use ServletRequest#getResourceAsStream().

Yes Thomas is right. So in order to create the buffered reader the code is the following:
InputStream is= getClass().getResourceAsStream(filepath);
BufferedReader br = new BufferedReader(new InputStreamReader(is));

InputStream from getResourceAsStream results in NULL

InputStream input = Faculty.class.getClassLoader().getResourceAsStream("Resources\\Names.txt");
DataInputStream in = new DataInputStream(input);
BufferedReader br = new BufferedReader(new InputStreamReader(in));
String strLine;
while ((strLine = br.readLine()) != null && !strLine.equals("")) {
keywords.add(strLine);
}
The code above works in NetBeans. But when I packed the code into an executable Jar and ran it from command line, it gave me a NullPointerException because of the non-initialized input. So I suspect the Jar was not able to read the resource file packaged in it. The folder Resources is directly under source folder of my project. Can anyone give some hint what to try?

you should write like this:
getResourceAsStream("/Resources/Names.txt");
if you don't add the prefix '/', it means that your path is based on your class path, not the root path