title: How to parse json field like a:[[1,2,3,4],[6,7,8,9]] using scala?
body: <p>I want parse one of field in Json format its like this </p>
  
  <p>"{a:[[1,2,3,4],[1,2,3,4]]}"</p>
  
  <p>In the above field 'a' want to extract first two digits 
  I tried with List[Int] in scala its not working. Try extract first two digits in each set like this </p>
  
  <p>a1:1</p>
  
  <p>a2:2</p>