In classification(RF) "java.lang.nullpointerexception" error

Hello everybody. I have a problem in SNAP program. Thank you already.

I taked the error “java.lang.nullpointerexception” while make a classification.


and after image classification, image don’t appear.

can you please describe your input data (where it comes from, how many bands, their names…) as well as the training geometries?

Data are Sentinel-2A images.
Bands: 1,2,3,4,5,6,7,8,8A,9,10,11,12

Process Made;
in SNAP, resample(10m) and subset
in ArcGIS, buffer(5km) and clip(study area)
in SNAP, Random Forest(It did not happen)
in RF classification; 5 classes created.

Is it enough Mr.Braun?

So you processed the data in ArcGIS and then imported it back into SNAP? What format did you use?

Maybe, for a test, you can skip the buffer and clip (only create a rough subset in SNAP) stick to the BEAM DIMAP format, and see if the RF operator works better if you do all steps inside SNAP.