getting error while trying to run "FlappyBird.jar" file.

[prateekgoelmzn]

Getting below error:
`
java.io.FileNotFoundException: resources/img/background.png (No such file or directory)
at java.base/java.io.FileInputStream.open0(Native Method)
at java.base/java.io.FileInputStream.open(FileInputStream.java:212)
at java.base/java.io.FileInputStream.(FileInputStream.java:154)
at java.base/java.io.FileInputStream.(FileInputStream.java:109)
at com.kingyu.flappybird.util.GameUtil.loadBufferedImage(GameUtil.java:30)
at com.kingyu.flappybird.component.GameBackground.(GameBackground.java:25)
at com.kingyu.flappybird.app.Game.initGame(Game.java:116)
at com.kingyu.flappybird.app.Game.(Game.java:46)
at com.kingyu.flappybird.app.App.main(App.java:12)
Exception in thread "main" java.lang.ExceptionInInitializerError
at com.kingyu.flappybird.app.Game.initGame(Game.java:116)
at com.kingyu.flappybird.app.Game.(Game.java:46)
at com.kingyu.flappybird.app.App.main(App.java:12)
Caused by: java.lang.NullPointerException
at com.kingyu.flappybird.component.GameBackground.(GameBackground.java:27)
... 3 more

`

[PDPENG]

Try switching to or installing JDK1.8 to troubleshoot environment issues

[heiyt]

Does this call Swing bag?

[PDPENG]

Does this call Swing bag?

What does you mean?

[heiyt]

这个是用swing做的吗