How to get absolute path to file in resources folder of your project

Question

Assume standard maven setup   Say in your resources folder you have a file abc    In Java  how can I get absolute path to the file please

User · Answer

There are two problems on our way to the absolute path:

The placement found will be not where the source files lie, but where the class is saved. And the resource folder almost surely will lie somewhere in the source folder of the project.
The same functions for retrieving the resource work differently if the class runs in a plugin or in a package directly in the workspace.

The following code will give us all useful paths:

    URL localPackage = this.getClass().getResource("");
    URL urlLoader = YourClassName.class.getProtectionDomain().getCodeSource().getLocation();
    String localDir = localPackage.getPath();
    String loaderDir = urlLoader.getPath();
    System.out.printf("loaderDir = %s\n localDir = %s\n", loaderDir, localDir);

Here both functions that can be used for localization of the resource folder are researched. As for class, it can be got in either way, statically or dynamically.

If the project is not in the plugin, the code if run in JUnit, will print:

loaderDir = /C:.../ws/source.dir/target/test-classes/
 localDir = /C:.../ws/source.dir/target/test-classes/package/

So, to get to src/rest/resources we should go up and down the file tree. Both methods can be used. Notice, we can't use getResource(resourceFolderName), for that folder is not in the target folder. Nobody puts resources in the created folders, I hope.

If the class is in the package that is in the plugin, the output of the same test will be:

loaderDir = /C:.../ws/plugin/bin/
 localDir = /C:.../ws/plugin/bin/package/

So, again we should go up and down the folder tree.

The most interesting is the case when the package is launched in the plugin. As JUnit plugin test, for our example. The output is:

loaderDir = /C:.../ws/plugin/
 localDir = /package/

Here we can get the absolute path only combining the results of both functions. And it is not enough. Between them we should put the local path of the place where the classes packages are, relatively to the plugin folder. Probably, you will have to insert something as src or src/test/resource here.

You can insert the code into yours and see the paths that you have.

User · Answer

You can use ClassLoader getResource method to get the correct resource   URL res   getClass   getClassLoader   getResource  abc txt    File file   Paths get res toURI    toFile    String absolutePath   file getAbsolutePath      OR  Although this may not work all the time  a simpler solution -  You can create a File object and use getAbsolutePath method   File file   new File  resources abc txt    String absolutePath   file getAbsolutePath

User · Answer

You need  to specifie path started from    URL resource   YourClass class getResource   abc    Paths get resource toURI    toFile

User · Answer

The proper way that actually works   URL resource   YourClass class getResource  abc    Paths get resource toURI    toFile      It doesn t matter now where the file in the classpath physically is  it will be found as long as the resource is actually a file and not a JAR entry    The seemingly obvious new File resource getPath    doesn t work for all paths  The path is still URL-encoded

User · Answer

To return a file or filepath  URL resource   YourClass class getResource  abc    File file   Paths get resource toURI    toFile       return a file String filepath   Paths get resource toURI    toFile   getAbsolutePath        return file path

User · Answer

Create the classLoader instance of the class you need  then you can access the files or resources easily  now you access path using getPath   method of that class      ClassLoader classLoader   getClass   getClassLoader     String path    classLoader getResource  chromedriver exe   getPath     System out println path

[java] How to get absolute path to file in /resources folder of your project

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