How should I use getResource()?

Question

I use getResource() to load the image, but I get nullpointer exception. Also I tried to use css but I get nothing. My code for label:

        Image mine = new Image(getClass().getResourceAsStream("bomb3.png"));
        ImageView im = new ImageView(mine);

        Label label = new Label();

        label.setGraphic(im);

And for button:

btn.setStyle("-fx-background-image: url('flag.png')");

This code is located in Painter class.

My file tree:

if the resources folder is in src then `getResourceAsStream("/resources/bomb3.png")` — Eboubaker, Nov 28 '19 at 13:46
It _looks_ like you have `src/main/java` and `src/resources` but the latter should actually be `src/main/resources`. If that's the case then fix the directory layout and afterwards `"/bomb3.png"` should work. — Slaw, Nov 28 '19 at 14:13

score 0 · Answer 1 · answered Nov 28 '19 at 15:56

0

If you use getClass().getResourceAsStream("bomb3.png") java search in the packetof your class. So if your class is Game, your resource must be in the packet: com.name.minesweeperClasses

answered Nov 28 '19 at 15:56

sej

46
4

score -3 · Answer 2 · answered Nov 28 '19 at 13:40

-3

Image mine = new Image(getClass().getResourceAsStream("bomb3.png"));

here path of bomb3.png is incorrect Please mention the relative path :- ./resources/boob3.png

answered Nov 28 '19 at 13:40

Namrata Kumari

17
1

possible duplicate of https://stackoverflow.com/questions/14739550/difference-between-getclass-getclassloader-getresource-and-getclass-getres – Paul Janssens Nov 28 '19 at 13:42
This path is not going to work. "./bomb3.png" is more correct I think – D. Lawrence Nov 28 '19 at 13:42
no - please don't post random variations of paths, instead read and understand the api doc of the method and explain (by citing/explaining that doc) why one variant will work while the other doesn't) Hint: your variant is even worse - will never work - than the original (which might work if the resource would be in the top-level package) – kleopatra Nov 28 '19 at 15:21
1

@D.Lawrence - no, periods are not supported in resolving a resource path – kleopatra Nov 28 '19 at 15:25

How should I use getResource()?

2 Answers2