boolean
retainAll(Collection<?> c)
Retains
only the elements in this list that are contained in the specified
collection. Return true if this list changed as a result of the call.
import java.util.*; class LinkedListRetainAll{ public static void main(String args[]){ LinkedList<Integer> myList = new LinkedList<> (); Set<Integer> mySet1 =new HashSet<> (); Set<Integer> mySet2 =new HashSet<> (); /* Add Elements to myList */ for(int i=0; i < 10; i++){ myList.add(i); } /* Add Elements to mySet1 */ for(int i=5; i < 15; i++){ mySet1.add(i); } /* Add Elements to mySet2 */ for(int i=10; i < 15; i++){ mySet2.add(i); } System.out.println("Elements in myList are "); System.out.println(myList +"\n"); System.out.println("Elements in mySet1 are "); System.out.println(mySet1 +"\n"); System.out.println("Elements in mySet2 are "); System.out.println(mySet2 +"\n"); myList.retainAll(mySet1); System.out.println("After retaining mySet1 from myList"); System.out.println(myList +"\n"); myList.retainAll(mySet2); System.out.println("After retaining mySet2 from myList"); System.out.println(myList +"\n"); } }
Output
Elements in myList are [0, 1, 2, 3, 4, 5, 6, 7, 8, 9] Elements in mySet1 are [5, 6, 7, 8, 9, 10, 11, 12, 13, 14] Elements in mySet2 are [10, 11, 12, 13, 14] After retaining mySet1 from myList [5, 6, 7, 8, 9] After retaining mySet2 from myList []
No comments:
Post a Comment