question: protected void prepareDataSet ( ) { dataSet1 = Arrays . asList ( new String [ ] { "a" , "b" , "c" } ) ; dataSet2 = Arrays . asList ( new String [ ] { "d" , "e" , "f" } ) ; dataSet3 = Arrays . asList ( new String [ ] { "b" , "c" , "a" , "d" } ) ; }
target:  prepare the dataset required for running test cases