FileInputStream Javafx in .jar files

Question

I am creating a Javafx application in Intelij and FileInputStream works perfectly. However, when I create a .jar file from the project and try to run it the code fails to run as it is unable to locate the file in the file input stream. Here is my code:

ObjectInputStream os = new ObjectInputStream(new FileInputStream("src/settingStorage.bin"));

Am I doing something wrong?

score 0 · Answer 1 · answered Dec 26 '17 at 03:07

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There is always some issue accessing a file outside a jar, depending on where the file location is. You can check this SO question/answer to have an idea on accessing your file.

Read properties file outside JAR file

answered Dec 26 '17 at 03:07

johnII

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Jacob B. · Answer 2 · 2017-12-26T05:55:15.730

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Try this:

EDIT: Look at this again, I left part out.

ObjectInputStream os = new ObjectInputStream(new FileInputStream(SomeClass.class.getResourceAsStream(“settingStorage.bin")));

This usually works for me. When I run this, it operates fine, in AND out of the development area. Don’t include /src, as when you call getResourceAsStream off a class, it already checks inside the jar.

Cheers!

edited Dec 26 '17 at 05:55

answered Dec 26 '17 at 03:11

Jacob B.

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which class should SomeClass be the class that this line of code is in? – joshLor Dec 26 '17 at 05:03
@joshLor yeah, that would probably be optimal, but it could be any class inside your src folder. Safer to do it the line of code it’s in though. – Jacob B. Dec 26 '17 at 05:04
This does not work it says can not resolve contractors FileInputStream (java.io.InputStream) – joshLor Dec 26 '17 at 05:41
Oh wait I forgot, I’m going to edit the code, use that. – Jacob B. Dec 26 '17 at 05:47
.toURI is not a method for Input streams but files I think – joshLor Dec 26 '17 at 05:51
That’s probably what I’m missing. – Jacob B. Dec 26 '17 at 05:53
The only problem is that this is happening in the start method so when I use that I get a null pointer exception. – joshLor Dec 26 '17 at 06:02
@joshLor please explain what you mean by that – Jacob B. Dec 26 '17 at 17:29
I do not know why but if the file is found SomeClass.class.getResourceAsStream(“settingStorage.bin") returns null. – joshLor Dec 26 '17 at 18:05

FileInputStream Javafx in .jar files

2 Answers2