java.lang.NullPointerException: InputStream is null

[elio hbeich]

Hey,


I am trying to read an inputStream but i get the following error:

source code:

InputStream it =
FileManager.get().open("C:/Users/Toshiba/AndroidStudioProjects/MyApplicationapp/app/sampledata/MallOntology.owl")
;

Model model = ModelFactory.createDefaultModel();
model.read(it, "");

error:

 Process: com.example.toshiba.myapplication, PID: 7055
    java.lang.NullPointerException: InputStream is null
        at java.util.Objects.requireNonNull(Objects.java:228)
        at org.apache.jena.riot.RDFDataMgr.read(RDFDataMgr.java:266)
        at org.apache.jena.riot.RDFDataMgr.read(RDFDataMgr.java:254)
        at 
org.apache.jena.riot.adapters.RDFReaderRIOT.read(RDFReaderRIOT.java:69)
        at org.apache.jena.rdf.model.impl.ModelCom.read(ModelCom.java:275)
        at 
com.example.toshiba.myapplication.MainActivity$3.onCompleted(MainActivity.java:255)
        at com.facebook.GraphRequest$1.onCompleted(GraphRequest.java:301)
        at com.facebook.GraphRequest$5.run(GraphRequest.java:1380)
        at android.os.Handler.handleCallback(Handler.java:790)
        at android.os.Handler.dispatchMessage(Handler.java:99)
        at android.os.Looper.loop(Looper.java:164)
        at android.app.ActivityThread.main(ActivityThread.java:6494)
        at java.lang.reflect.Method.invoke(Native Method)
        at 
com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)


Any advice

Best Regards