How to locate the Path of the current project directory in Java (IDE)?

Question

I am trying to locate the path of the current running/debugged project programmatically in Java, I looked in Google and what I found was System.getProperty(\"user.id\"

Answer 1

This is the new way to do it:

Path root = FileSystems.getDefault().getPath("").toAbsolutePath();
Path filePath = Paths.get(root.toString(),"src", "main", "resources", fileName);

Or even better:

Path root = Paths.get(".").normalize().toAbsolutePath();

But I would take it one step further:

public String getUsersProjectRootDirectory() {
    String envRootDir = System.getProperty("user.dir");
    Path rootDIr = Paths.get(".").normalize().toAbsolutePath();
    if ( rootDir.startsWith(envRootDir) ) {
        return rootDir;
    } else {
        throw new RuntimeException("Root dir not found in user directory.");
    }
}

Answer 2

File currDir = new File(".");
String path = currDir.getAbsolutePath();
System.out.println(path);

This will print . at the end. To remove, simply truncate the string by one char e.g.:

File currDir = new File(".");
String path = currDir.getAbsolutePath();
path = path.substring(0, path.length()-1);
System.out.println(path);

Answer 3

This is a code snippet to retrieve the path of the current running web application project in java.

public String getPath() throws UnsupportedEncodingException {

    String path = this.getClass().getClassLoader().getResource("").getPath();
    String fullPath = URLDecoder.decode(path, "UTF-8");
    String pathArr[] = fullPath.split("/WEB-INF/classes/");
    System.out.println(fullPath);
    System.out.println(pathArr[0]);
    fullPath = pathArr[0];

    return fullPath;

}

Source: https://dzone.com/articles/get-current-web-application