compare 2 lists in java [closed]

Answer 1

Suppose you have two pojos corresponding to two different table of two different datbase

Pojo1-------entity class corressponding to first table of first database

Pojo2-------entity class corressponding to second table of second database

 List listOne = new ArrayList();
  List listTwo = new ArrayList();
   listTwo.retainAll(listOne);

Note that in these two pojos you have to override hashcode() and equals() method of Object class, because in retainAll, you are comparing the objects of two pojos