Incompatible Types: Arraylist Cannot Be Converted To String

I don't see what is wrong with my ArrayList that i get this error: Error:(133, 17) error: incompatible types: ArrayList cannot be converted to String i want to get all columns

Solution 1:

The type of returned value arrTblNames is ArrayList but the return type of getListOfFiltersName is String Hence the error so return type of getListOfFiltersName method should be ArrayList<String> instead of String

publicArrayList<String> getListOfFiltersName(){

or preferably public List<String> getListOfFiltersName(){