Getting json resource throws NullPointerException

Question

I've been trying to load my json file (LandInfo) from a res folder within my src folder.

I want to load the file in so that it can be parsed with Gson.

I've tried doing:

getClass().getResource("res/LandInfo").toExternalForm()

and

new InputStream(getClass().getResourceStream("res/LandInfo"))

since Gson#fromJSon accepts either a string or a reader

However, both options return null.

How would I go about finding the file in a correct manner?

Try with `/res/LandInfo` since you don't want path related to current location of class returned from `getClass` but from root location of your resources. More info: http://stackoverflow.com/questions/9864267/load-icon-image-exception — Pshemo, Aug 03 '16 at 17:27
You should use `/LandInfo` as a resource path here; the `res` directory is marked as a directory on the classpath itself according to your image — fge, Aug 03 '16 at 17:47
As your using intellij, I personally do it like this: 1. Right click on the file in explorer, and click copy file path. Paste the copied file path. — Sarhad Salam, Aug 03 '16 at 18:18

score 3 · Accepted Answer · answered Aug 03 '16 at 18:12

getClass().getResource() loads resources from the directory in which your class is located (here "src/sample") Thus the returned URL by this method would look like "src/sample/res/LandInfo" which is not correct.

Instead, you could use:

getClass().getResource("../res/LandInfo").toExternalForm()

and

new InputStream(getClass().getResourceStream("../res/LandInfo"))

Also make sure that your non-java files (resources) are copied into your build folder when using build managers such as Maven, Gradle, etc

Using this I've successfully been able to grab it. Thanks for the help — Orange Receptacle, Aug 03 '16 at 18:45

Getting json resource throws NullPointerException

1 Answers1