List<Integer> accountIdListOne = new ArrayList<>(); accountIdListOne.add(1); accountIdListOne.add(2); accountIdListOne.add(3); List<Integer> accountIdListTwo = new ArrayList<>(); accountIdListTwo.add(3); accountIdListTwo.add(4); accountIdListTwo.add(5); accountIdListTwo.add(6); List<Integer> accountIdList = accountIdListOne.stream().filter(accountIdListTwo::contains).collect(Collectors.toList()); System.out.println(accountIdList.toString());