Exception in thread "main" java.lang.NullPointerException

[mosabrezaei]

Hi,

Thank you so much for sharing such great work.
I will be grateful if you can help me with the problem that I have faced.

First of all, I installed maven:

!apt-get install maven

Then I followed the instructions:

! git clone https://github.com/micheletufano/src2abs.git

cd src2abs

! mvn clean
! mvn install:install-file -Dfile="lib/javalexer.jar" -DgroupId="edu.wm.cs" -DartifactId="javalexer" -Dversion="1" -Dpackaging="jar"
! mvn package

Also, I got buggy.txt and fixed.txt files from the test directory (to check the model):

! wget https://raw.githubusercontent.com/micheletufano/NeuralCodeTranslator/master/dataset/bug-fixes/small/test/buggy.txt
! wget https://raw.githubusercontent.com/micheletufano/NeuralCodeTranslator/master/dataset/bug-fixes/small/test/fixed.txt

Then I created destination files:

f = open("output_tests_abstracted.txt","w+")
f.close() 
f = open("input_methods_abstracted.txt","w+")
f.close() 
f = open("idioms.txt","w+")
f.close() 

Finally, I entered the following command:

! java -jar src2abs-0.1-jar-with-dependencies.jar pair method buggy.txt fixed.txt input_methods_abstracted.txt output_tests_abstracted.txt idioms.txt

But unfortunately, I faced with the following error and I don't know what is the reason for that:

Exception in thread "main" java.lang.NullPointerException
	at java.base/java.nio.file.Files.provider(Files.java:101)
	at java.base/java.nio.file.Files.isDirectory(Files.java:2229)
	at edu.wm.cs.src2abs.AbstractorManager.checkParentFolderExists(AbstractorManager.java:121)
	at edu.wm.cs.src2abs.AbstractorManager.checkInputs(AbstractorManager.java:117)
	at edu.wm.cs.src2abs.AbstractorManager.abstractCodePair(AbstractorManager.java:62)
	at edu.wm.cs.src2abs.main.AbstractorMain.abstractCodePair(AbstractorMain.java:67)
	at edu.wm.cs.src2abs.main.AbstractorMain.main(AbstractorMain.java:27)

Thanks for your help in advance.

[mosabrezaei]

By tracing the above Exception, I fixed the error:

! java -jar ./target/src2abs-0.1-jar-with-dependencies.jar pair method ./Input.txt ./output.txt ./input_abstracted.txt ./output_abstracted.txt ./idioms.txt