Null Pointer Exception in Reading file from resources java

Question

I'm trying to read a .csv file from my resource folder in my maven project. I've done it before like this:

BufferedReader reader = new BufferedReader(
new InputStreamReader(this.getClass().getResource("info.csv").openStream()));

CSVParser csvParser = new CSVParser(reader,
CSVFormat.DEFAULT.withFirstRecordAsHeader().withIgnoreHeaderCase().withTrim());

and it worked. and now in another project, I'm trying read my file from resources and I get NullPointerException.

The only thing that is different between these 2 projects is my packages.

This is for the one that works:

and This is the one that doesn't work:

What am I doing wrong?

After fix by @jens answer, sure that resource's file is exist at target folder. If not, compile before — Mikhail Ionkin
– Mikhail Ionkin, Commented Aug 21, 2018 at 12:15

Jens · Accepted Answer · 2018-06-06 10:03:53Z

8

Add a slash before the filename:

new InputStreamReader(this.getClass().getResource("/info.csv").openStream()));

without slash it looks in the same directory structure than your class is located

edited Jun 6, 2018 at 10:03

answered Jun 6, 2018 at 9:58

Jens

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1 Comment

Jens Over a year ago

@MikhailIonkin it is an maven Project and will be copied by maven

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