Fetting a null pointer exception at line 3: Object[][] parameters = readFile(fil

Question

Fetting a null pointer exception at line 3:  Object[][] parameters = readFile(filename,2);

Ponly when I try to use   @Parameterized.Parameters

need modified operation.

Current operation is as follows:

@Parameterized.Parameters

public static int[][] data() {

Object[][] parameters = readFile(filename,2);

for (int i = 0; i <= parameters.length-1; i++) {   

result = countA(parameters[i][0].toString());

expectedResult = Integer.valueOf(parameters[i][1].toString());

array[i][0] = result;

array[i][1] = expectedResult;

}

return array;

}

Explanation / Answer

Solution:

nullPointerExceptions occurs only when we are pointing to a null reference which means to a location which is not pointing to the memory(null), that is why we get nulllPointerExceptions.

in   Object[][] parameters = readFile(filename,2);

Here object reference is explicitly to be set to parameters on readFile, but the readFile is containing null as a value, that is the main reason behind this error nullPointerException.

I hope this helps if you find any problem. Please comment below. Don't forget to give a thumbs up if you liked it. :)

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