Not able to load properties file from classpath

Question

I have an eclipse scala project which I am assembling with sbt. I want to add a properties file which I have tried placing in both the src and the target/scala/classes folders. I am not sure how to load this file in my program. This is my code:

val reader=this.getClass().getClassLoader().getResourceAsStream("ccm.properties") //Reading the properties file
val p=new Properties();  
p.load(reader);  
val maxDimension = p.getProperty("maxDimension").toInt

This is the exception I am getting:

Exception in thread "main" java.lang.ExceptionInInitializerError
    at com.musigma.ind.invictus.ConvergentCrossMapping.main(ConvergentCrossMapping.scala)
Caused by: java.lang.NullPointerException
    at java.util.Properties$LineReader.readLine(Properties.java:434)
    at java.util.Properties.load0(Properties.java:353)
    at java.util.Properties.load(Properties.java:341)
    at com.musigma.ind.invictus.ConvergentCrossMapping$.<init>(ConvergentCrossMapping.scala:35)
    at com.musigma.ind.invictus.ConvergentCrossMapping$.<clinit>(ConvergentCrossMapping.scala)
    ... 1 more

UPDATE: This question is not a duplicate of this as I am writing this code in a Scala object and I cannot use this.class.getResourceAsStream(...)

where in `src` did you place this file? The convention is `src/main/resources` which would be scanned into the classpath by default, is that where you put it? — Tzach Zohar, Jun 22 '16 at 11:48
@TzachZohar The resources directory in main was not present. I created it and placed the file there. I am still getting the same exception. — Piyush Shrivastava, Jun 22 '16 at 11:50

score 1 · Accepted Answer · answered Jun 22 '16 at 12:38

Instead of java properties class, you can do it with ConfigFactory. File must be located under resources directory.

var b = getClass.getResource("/test.properties").getPath
val externalConfig1 = ConfigFactory.parseFile(new File(b))

println(externalConfig1.getInt("maxDimension"))

Not able to load properties file from classpath

1 Answers1