[FIXED] Getting the different elements from 2 lists in groovy

Issue

i have 2 lists in groovy and im trying to 'filter' one list from the other,and get them into a new list .I'm also doing that in a groovy function for a jenkins pipeline I'm writing. Many thank.

l1 = ['abc','def','ghi','jkl']
l2 = ['def','jkl']
def sum = []
for (y in l1) {
  for (x in l2) {
     if (x != y){
       sum = sum + x
     }
  }
}              
print sum

Solution

eventually I did this and it worked

sum = l1 - l2

print "${sum}" //prints the elements in the array

Answered By - DlekaShelHaHaim
Answer Checked By - Robin (JavaFixing Admin)