java can't access resources folder

Question

I have a structure like ths (using IntelliJ

When I try and access items in the resources folder I get a null pointer exception:

private Icon bishopB = new ImageIcon( getClass().getResource("icons/bishopb.gif") );

exception:

Exception in thread "main" java.lang.NullPointerException
    at java.desktop/javax.swing.ImageIcon.<init>(ImageIcon.java:217)
    at chess.GUI.<init>(GUI.java:21)
    at chess.ChessGame.<init>(ChessGame.java:14)
    at chess.ChessGame.main(ChessGame.java:28)

when debugging it seems to be looking for the resource chess/icons/bishopb.gif

Try using `getClass().getResource("/icons/bishopb.gif")` instead. Using `"icons/bishopb.gif"` is actually relative path based on the current package — MadProgrammer, Dec 14 '20 at 00:46
The crack the resulting Jar open and make sure the resources are been included AND they are in the expected path - Jars are just zip files, so you can change the file extension and unzip it — MadProgrammer, Dec 14 '20 at 00:52
OP never said they were using Spring Boot - but you never know with what creativity some of this is created. — Randy Casburn, Dec 14 '20 at 01:16
@Tino - is this a Sping Boot app generated with starter.spring.io? — Randy Casburn, Dec 14 '20 at 01:17
You might find this answer helpful: https://stackoverflow.com/a/15581779/9078341 — Randy Casburn, Dec 14 '20 at 01:25
Thanks @RandyCasburn - changing to getClass().getClassLoader().getResource("icons/bishopb.gif") seemed to fix it — Tino, Dec 14 '20 at 01:28

score -1 · Answer 1 · answered Dec 14 '20 at 13:05

-1

Use getClass().getClassLoader() if you want to use full paths staring from the resource roots.

answered Dec 14 '20 at 13:05

Andrey

15,144
25
91
187

java can't access resources folder

1 Answers1