Convert CSV values to a HashMap key value pairs in JAVA

Question

HI I have a csv called test.csv . I am trying to read the csv line by line and convert the values into a hash key value pairs . Here is the code :-

Answer 1

Beside the problem you have with the first number which its not a pair and its causing the Exception, you will not want to use Hashmap, since hashmap use a unique key, so line 2 will replace values from line 1.

You should use a MultiMap, or a List of pairs in this case.